This substantial rear dormer and L-shaped loft conversion in Southwark transformed previously unused roof space into a bright and practical new living level with two bedrooms, a modern en-suite shower room and a private roof terrace.
Completed by Croydon-based Art & Build Ltd, the project required extensive structural alterations, including partial roof removal, structural steel installation, a new timber floor structure, dormer framing, flat roof construction, high-performance insulation, new VELUX roof windows and a bespoke staircase.
The result is a fully integrated loft conversion that provides valuable additional accommodation while preserving the character and usable ground-floor space of the original terraced property.
Project at a Glance
Location: Southwark, London, SE17
Project type: Rear dormer and L-shaped loft conversion
New accommodation: Two bedrooms and an en-suite shower room
Additional feature: Private roof terrace
Main dormer: Approximately 5m × 7.5m
L-shaped section: Approximately 3.6m × 3m
Structural work: Steel beams and new timber floor structure
Roofing: Flat dormer roof, retained pitched roof sections and new rooflights
Builder: Art & Build Ltd — Croydon-based loft conversion builders
The Project Brief
The aim of the project was to maximise the available roof space and create a complete new residential level without extending into the garden.
A combined rear dormer and L-shaped dormer design provided the additional head height and usable floor area required for two comfortable bedrooms, an en-suite shower room, a new landing and a private outdoor terrace.
The layout was designed to feel like a natural extension of the existing home. Particular attention was given to natural light, practical circulation, insulation, structural safety and the connection between the new rooms and the original staircase.
Before the new loft structure could be formed, the existing roof was carefully assessed, protected with full scaffolding and stripped back in the areas affected by the conversion.
Roof tiles, battens and sections of the original timber structure were removed to create the required structural openings. Other parts of the pitched roof were retained where they remained outside the new dormer and roof terrace layout.
This stage exposed the original roof structure and provided access for the structural steelwork, new floor system and dormer frame. The structural alterations, fire safety provisions, insulation and access all had to be coordinated in accordance with loft conversion Building Regulations.
The original roof covering shortly before the tiles and battens were removed by Art & Build Ltd.
The roof prepared for the first stage of structural conversion work by Croydon builders Art & Build Ltd.
The original roof timbers exposed before reconstruction of the new loft roof by Art & Build Ltd.
The existing roof stripped and prepared for the new structural framework by Croydon-based builders Art & Build Ltd.
Early construction stage showing the roof prepared for the loft conversion, by Croydon loft conversion builders Art & Build Ltd.
The existing roof framing exposed before the new structural loft conversion work began, by Art & Build Ltd.
The existing roof stripped back to expose the original timbers before structural steel installation, by Art & Build Ltd.
The existing roof covering and adjoining brickwork before the new loft roof was constructed by Art & Build Ltd.
STAGE 2 – Structural Steel and New Loft Floor
Structural steel beams were installed to carry the loads created by the new loft floor, dormer walls and roof structure.
The beams were positioned within the existing building and connected with a new structural timber floor system. Timber joists were installed across the loft area to create a stable platform for the new rooms and provide the basis for the internal layout.
This was one of the most important stages of the conversion because it established the structural geometry, floor level and overall shape of the new accommodation.
Structural steel beams positioned on the stripped roof ready for installation by Croydon-based builders Art & Build Ltd.
A structural steel beam installed to support the new loft floor and conversion structure, by Art & Build Ltd.
New timber floor joists installed alongside the structural steelwork by Croydon builders Art & Build Ltd.
The main structural steel framework installed to support the new loft floor and dormer construction, by Croydon-based builders Art & Build Ltd.
New timber floor joists forming the structural base of the converted loft, installed by Art & Build Ltd.
New timber framing forming the internal loft structure and wall layout, by Art & Build Ltd, a Croydon-based construction company.
STAGE 3 – L-Shaped Dormer Timber Frame and Flat Roof Construction
Once the main supporting structure was in place, the rear dormer and L-shaped section were formed using structural timber framing.
The new walls defined the bedroom layout, circulation space and external outline of the dormer. Timber roof joists were then installed to form the flat dormer roof, including detailed construction around the existing chimney and adjoining retained roof sections.
The completed frame clearly established the final proportions and usable internal area of the new loft conversion.
The new loft floor and internal wall framing constructed by Art & Build Ltd, experienced loft conversion builders based in Croydon.
Croydon-based loft conversion builders Art & Build Ltd installing the upper timber structure of the new loft.
The timber frame of the L-shaped dormer roof taking shape, constructed by Art & Build Ltd.
New timber joists forming the structural frame of the flat dormer roof, installed by Croydon-based builders Art & Build Ltd.
New timber framing defining the future corridor, doorways and room layout, constructed by Croydon builders Art & Build Ltd.
The new timber framework constructed around the structural steel and loft floor, by Art & Build Ltd, a Croydon-based construction company.
The main flat dormer roof structure spanning the new loft conversion, constructed by Art & Build Ltd.
New timber framing defining the internal rooms and circulation space, by Art & Build Ltd, a Croydon-based construction company.
The flat dormer roof joists installed by Croydon-based builders Art & Build Ltd.
Insulation works in progress as new insulation is being fitted within the dormer roof structure.
STAGE 4 – Insulation, Rooflights and First-Fix Services
High-performance loft insulation was installed throughout the new dormer roof, pitched roof slopes and external timber walls.
Rigid insulation boards were carefully fitted between the roof joists, rafters and wall studs. The work included detailed insulation around roof windows, wall junctions and first-fix plumbing and electrical services.
Two VELUX roof windows were installed in the retained front roof slope, bringing additional daylight and ventilation into the new loft rooms.
Rigid insulation fitted between the flat dormer roof joists by Croydon-based builders Art & Build Ltd.
Roof insulation installed between the dormer roof joists to improve thermal performance, by Art & Build Ltd.
PIR insulation installed between the timber studs to improve the thermal performance of the new loft rooms, by Art & Build Ltd.
Rigid insulation carefully fitted between the existing roof timbers by Croydon-based builders Art & Build Ltd.
Roof and wall insulation installed throughout the new loft before plasterboarding and internal finishing, by Art & Build Ltd.
Roof insulation installed between the dormer roof joists to improve thermal performance, by Art & Build Ltd.
The sloping roof and VELUX window openings fully insulated by Art & Build Ltd, a Croydon-based construction company.
Insulation works helping create a warmer and more energy-efficient loft space – by Art & Build Ltd, a Croydon-based construction company.
The L-shaped dormer flat roof insulated between the structural timber joists by Croydon loft conversion builders Art & Build Ltd.
The original front roof structure was retained and upgraded with two new VELUX windows by Art & Build Ltd.
STAGE 5 – Flat Roof Waterproofing and Roof Terrace Construction
The new dormer roof was completed with a durable waterproof flat roof system, carefully finished around rooflights, perimeter edges and the existing chimney.
Part of the original pitched roof remained alongside the new development. A new framed boundary wall and terrace structure were built beside this retained roof section.
The private roof terrace was completed with composite decking, rendered boundary walls and glazed double doors connecting it directly with one of the new bedrooms.
The retained section of the original roof beside the newly constructed timber frame for the roof terrace wall, by Art & Build Ltd.
The new dormer flat roof fully waterproofed around the rooflight by Croydon-based builders Art & Build Ltd.
The new dormer flat roof completed around the existing chimney and rooflights by Croydon loft conversion builders Art & Build Ltd.
The completed waterproof roof covering across the new L-shaped dormer, installed by Art & Build Ltd.
The completed rear dormer flat roof above the new glazed doors, by Art & Build Ltd, a Croydon-based construction company.
The finished edge and waterproof covering of the L-shaped dormer flat roof, completed by Art & Build Ltd.
Direct access from the loft bedroom onto the new roof terrace, created by Croydon loft conversion builders Art & Build Ltd.
The completed roof terrace with durable decking and direct access to the new loft bedroom, by Art & Build Ltd.
The new roof terrace provides useful outdoor space directly beside the loft bedroom, by Art & Build Ltd, a Croydon-based construction company.
STAGE 6 – Bespoke Loft Staircase and New Landing
A new timber staircase was installed to connect the original first-floor landing with the converted loft level.
The staircase was designed to fit naturally within the existing circulation space while meeting the practical requirements of the new floor. A timber balustrade, handrail and protected stair opening were constructed around the new upper landing.
The completed staircase provides a natural transition between the original home and the new accommodation rather than making the loft feel like a separate addition.
The new stair opening formed and new balustrade in its unfinished state installed by Croydon-based builders Art & Build Ltd.
A bespoke timber staircase and handrail installed by Croydon loft conversion builders Art & Build Ltd.
A new bespoke timber staircase connecting the existing first floor with the converted loft, installed by Art & Build Ltd.
The new timber staircase and balustrade fully installed before decoration and floor finishing, by Croydon-based builders Art & Build Ltd.
The bespoke loft staircase taking shape during installation by Croydon loft conversion builders Art & Build Ltd.
The new timber staircase, handrail and balustrade installed before final decoration by Art & Build Ltd.
The new loft staircase connected with the landing structure by Art & Build Ltd, a Croydon-based construction company.
A new timber balustrade installed around the loft staircase opening by Art & Build Ltd.
Staircase installation stage before final decoration and finishing stage by Art & Build Ltd.
STAGE 7 – Plasterboarding and Internal Finishing
The new bedrooms, bathroom, hallway and landing were fully insulated and plasterboarded before receiving their final plaster finish.
Plasterboard was carefully fitted around sloping ceilings, rooflights, doorways and the staircase opening. The joints were prepared for skim plastering, followed by painting, internal carpentry, door installation, skirting, architraves, lighting and heating fixtures.
The roof terrace bedroom and the room beneath the retained pitched roof were then prepared for final flooring and decoration.
Plasterboard installed across the walls and ceiling of the new loft bedroom by Art & Build Ltd.
The new loft bedroom fully boarded with joints prepared for plastering by Croydon-based builders Art & Build Ltd.
Plasterboard fitted throughout the new loft room and around the staircase opening by Art & Build Ltd.
The plasterboarded loft bedroom prepared for its final skim coat by Art & Build Ltd, a Croydon-based construction company.
The completed plasterboard shell of the new loft bedroom before plastering and decoration, by Art & Build Ltd.
The newly plastered loft room prepared for final decoration and flooring by Croydon-based builders Art & Build Ltd.
The new loft bedroom with glazed doors providing direct access to the roof terrace, completed by Art & Build Ltd.
Glazed double doors connect the new loft bedroom directly with the roof terrace, completed by Art & Build Ltd.
STAGE 8 – Completed Loft Conversion
The final layout provides two bright bedrooms, a modern en-suite shower room, a new landing, a bespoke staircase and direct access to the private roof terrace.
White walls and recessed lighting create a clean contemporary finish, while the deep blue carpet adds warmth and visual continuity across the bedrooms, landing and staircase.
The completed loft feels fully integrated with the original property and provides a substantial increase in usable living space without reducing the garden area.
The new loft en-suite includes a glass shower, fitted vanity unit and natural light from the roof window, by Croydon-based builders Art & Build Ltd.
A compact glass shower enclosure finished with contemporary grey tiles, installed by Croydon loft conversion builders Art & Build Ltd.
The completed loft en-suite with a glass shower, fitted vanity, toilet and natural light from the roof window, by Art & Build Ltd.
A bright new loft bedroom with two VELUX windows bringing natural daylight into the space, by Croydon loft conversion builders Art & Build Ltd.
The completed loft bedroom ready for installation of the final carpet, by Croydon-based builders Art & Build Ltd.
A bright and practical loft bedroom with two rooflights and generous usable floor space, completed by Art & Build Ltd.
The completed loft bedroom combines generous floor space, natural light and a deep blue carpet finish, by Art & Build Ltd.
The completed loft landing and bedroom entrance finished with deep blue carpet, by Art & Build Ltd.
A bright completed loft bedroom finished with deep blue carpet by Croydon-based builders Art & Build Ltd.
The completed loft landing and staircase finished with continuous blue carpeting, by Art & Build Ltd, a Croydon-based construction company.
The completed loft bedroom provides direct access to the roof terrace through glazed double doors, by Croydon-based builders Art & Build Ltd.
A bright loft bedroom with direct views and access onto the completed roof terrace, by Art & Build Ltd.
The completed loft bedroom with glazed terrace doors and deep blue carpet, by Art & Build Ltd.
The completed loft hallway and bespoke staircase unified by deep blue carpeting, by Art & Build Ltd.
The completed loft staircase finished with deep blue carpet, a white balustrade and timber handrail, by Art & Build Ltd.
What the Project Delivered
Two additional bedrooms
Modern en-suite shower room
Private roof terrace with composite decking
Rear dormer and L-shaped dormer construction
New structural steel and timber floor system
New bespoke staircase and landing
High-performance roof and wall insulation
New VELUX roof windows
New plumbing, heating and electrical installation
Full plastering, carpentry, decoration and carpeting
Substantially increased usable living space
The Result
This Southwark loft conversion demonstrates how a complex roof space can be transformed into a complete new residential level through careful structural planning and coordinated construction.
The combination of a rear dormer, L-shaped extension and private roof terrace provided significantly more usable floor area while preserving selected sections of the original roof.
The finished accommodation is bright, practical and well connected to the existing home, with two bedrooms, an en-suite bathroom, generous natural light and valuable outdoor space.
For homeowners assessing the wider financial benefit of a similar project, our guide explains how much value a loft conversion may add and which factors can influence the final return.
Planning a Loft Conversion in Croydon or South London?
Whether you are considering a rear dormer, L-shaped loft conversion, roof terrace or complete structural transformation, our Croydon-based team can help manage the project from the initial construction stage through to the final interior finish.
You can also view the areas we cover across Croydon, South London and selected surrounding locations.
Our team provides clear, experience-led guidance to help homeowners understand their structural, planning, design and budget options before committing to building work.
Contact Art & Build Ltd to discuss your proposed loft conversion and arrange a free initial consultation.
See our similar projects?
Discover additional loft conversion and home refurbishment projects completed by Art & Build Ltd across Croydon and South London. From rear dormer and L-shape loft conversions to roof terraces, en-suite bathrooms and full structural works, each project demonstrates our approach to maximising space, light and long-term property value.
Architectural rendering showing the planned two-storey extension, new garden house and landscaped outdoor space – Art & Build London.
House Extension • Garden House • Landscaping Project
This substantial residential project in Wimbledon involved the construction of a bespoke two-storey house extension, combined with comprehensive external works designed to enhance both internal living space and outdoor functionality.
Delivered as part of our specialist house extensions services, the project focused on structural integration, modern design elements and long-term property value.
Project Outcome
Significant increase in internal living space across two floors
New first-floor bathroom improving layout and usability
Fully insulated modern garden house
Tiled patio and composite decking installation
Complete landscaping transformation
Seamless integration between extension and outdoor areas
Project Overview
The project included the construction of a carefully designed rear house extension, extending both the ground and first floors to create additional living space while maintaining architectural continuity with the existing property.
The enlarged ground-floor area improves day-to-day functionality, while the new first-floor bedroom with modern bathroom enhances circulation and comfort. Structural alterations were completed in full compliance with UK building regulations.
In addition to the main extension works, we constructed a modern, fully insulated garden room, finished with composite cladding and large bi-fold doors. This flexible space can be used as a home office, leisure area or entertaining zone.
Landscaping & External Works
The external transformation included a new tiled patio built on a retaining brick wall, alongside durable composite decking adjacent to the property.
Comprehensive garden landscaping works were undertaken to create a cohesive and functional outdoor environment, seamlessly connected to the extended internal living space.
Projects combining house extension and landscaping elements require careful coordination to ensure structural stability, drainage management and long-term durability.
Project gallery
Planning a Similar Project?
If you’re considering a house extension, garden room or outdoor transformation, get in touch to discuss your project.
House refurbishment• Garden landscaping • full internal renovation
This extensive full house refurbishment in Leatherhead is one of our most comprehensive residential projects to date. The property underwent a complete transformation — internally and externally — resulting in a modern, elegant home finished to the highest standard, while respecting the original character of the building.
Redesigned facade with entrance portico and columns
Extensive landscaping with patios, terraces, lawns and fountain
Construction of garden house and private tennis court
New driveway, entrance gates and upgraded garage
Project Outcome
This project involved a complete internal and external refurbishment of a large residential property in Leatherhead, Surrey. The scope of works covered every aspect of the home — from structural alterations and a raised roof, through full interior reconstruction, to extensive landscaping of the surrounding grounds.
Internally, the house was fully stripped back and rebuilt. We delivered new bathrooms, a bespoke kitchen, upgraded staircases, new flooring throughout, and a complete overhaul of all electrical and plumbing systems. The loft space and roof structure were reconstructed and upgraded, improving both functionality and energy performance.
Externally, the property was given a new architectural identity. The facade was redesigned and finished with a striking front portico and columns, creating a strong, elegant entrance. Both the front and rear elevations were rebuilt and refined, significantly enhancing the overall appearance of the house.
The outdoor works were equally extensive. The rear garden was completely redesigned with terraces, paved patios, steps, pathways, lawns and a central water feature. A bespoke garden house and a private tennis court were also constructed, creating a truly premium outdoor living and leisure space. To the front, we delivered a new driveway, entrance gates with masonry pillars, and upgraded the side garage to match the main building.
This full house refurbishment showcases Art & Build Ltd’s ability to manage and deliver large-scale, complex residential projects from start to finish — combining construction, architecture, interiors and landscaping into one seamless result.
Planning a full house refurbishment in London?
Get in touch with Art & Build Ltd to discuss your project and discover how we can transform your home from concept to completion.
Modern rear extension with large sliding glass doors, carried out by Art & Build Ltd construction company.
REAR HOUSE EXTENSION · FIRST-FLOOR EXTENSION · LOFT CONVERSION · FULL HOUSE REFURBISHMENT
This large-scale residential transformation in Weybridge combined a substantial rear and first-floor extension, a bespoke loft conversion and a complete internal refurbishment. The project significantly increased the property’s usable floor area while improving its layout, natural light, energy performance and long-term functionality.
Art & Build Ltd, a Croydon-based construction company, managed the project through every major stage — from architectural coordination, demolition and structural steel installation to roofing, plumbing, electrical work and final interior finishes.
The result is a fully transformed family home that brings together a modern house extension, an extensively rebuilt roof, additional loft accommodation and a high-quality full house refurbishment within one carefully coordinated project.
PROJECT SCOPE & OUTCOME
Location: Weybridge, Surrey
Project type: Rear and first-floor house extension, loft conversion and full house refurbishment
Additional accommodation: Enlarged first-floor living space and newly created loft rooms
Main structural work: Load-bearing steel frame, structural beams, new timber floor structures and extensive internal alterations
Rear extension: Large open-plan ground-floor extension with a projecting flat roof
Glazing: Wide sliding patio doors and corner glazing connecting the interior with the garden
Loft conversion: New dormers, roof windows, internal timber framing and additional usable accommodation
Roofing: Full roof reconstruction with new rafters, insulation, breathable membrane, battens, roof tiles and rooflights
Bathrooms: Six modernised and newly fitted bathrooms
Kitchen and living space: New contemporary kitchen within a large open-plan family living area
Building services: Complete plumbing and electrical upgrades, new heating pipework and underfloor heating in selected areas
Internal work: Oak staircases, timber flooring, internal doors, plastering, tiling, carpentry, decoration and final fit-out
External work: Rendered extension finishes, new patio areas, replacement windows, entrance door and gravel driveway
Builder: Art & Build Ltd — Croydon-based construction company specialising in house extensions, loft conversions and full house refurbishments
Project overview
The Weybridge project involved far more than adding a single new room. The property was comprehensively reconfigured and extended across several levels, requiring close coordination between the architectural design, structural work, roofing, building services and interior finishes.
The first floor was extended to create additional accommodation, while the rear of the house was opened and enlarged to form a spacious contemporary living area. A projecting flat roof and extensive glazing introduced a strong modern architectural element while creating a direct visual and physical connection between the house, patio and garden.
At roof level, the existing structure was substantially rebuilt to accommodate a new loft conversion,dormers and roof windows. Internally, the property underwent a complete renovation, including bathrooms, kitchen, heating, plumbing, electrics, staircases, flooring and decoration.
Before construction began, the existing property was photographed and assessed to establish its original layout, roof structure and rear elevation.
Architectural drawings, floor plans and technical documentation were prepared to coordinate the extension, loft conversion and internal alterations. Particular attention was given to structural load paths, roof geometry, insulation, fire safety, room layouts and the routing of new plumbing and heating services.
The planning and design stage created a clear framework for delivering the house extension, first-floor enlargement and loft conversion as one integrated construction project.
The detached Weybridge property before structural extension and refurbishment works commenced.
The original front elevation before the comprehensive house renovation in Weybridge.
Rear elevation of the Weybridge property before the extension, loft conversion and refurbishment began.
The original rear section of the property before the new extension was constructed.
The existing living room before the internal refurbishment and structural alterations.
Ground-floor construction plan for the new Weybridge house extension.
Architectural roof design prepared for the Weybridge extension and loft conversion.
Second-floor plan prepared for the new loft conversion accommodation.
STAGE 2 – Scaffolding, Demolition & Opening Up
Extensive scaffolding was erected around the property to provide safe access to the upper floors and roof.
Controlled demolition then began across the rear and internal sections of the house. Existing walls, floors and parts of the original roof structure were carefully removed, while temporary supports were introduced to protect the remaining building.
The rear elevation was opened in preparation for the new extension, and internal areas were stripped back to allow the original layout to be reorganised.
This stage revealed the full scale of the structural transformation required before the new building elements could be introduced.
Scaffolding installed in preparation for the Weybridge house extension and loft conversion.
The loft space during the internal demolition and preparation stage.
The rear of the house opened up during the demolition and reconstruction phase.
The house opened internally during the demolition and structural alteration stage.
The new floor structure taking shape above the extended part of the house.
An opening created within the existing roof during the loft conversion works.
Early structural construction works underway at the rear of the Weybridge property.
Structural construction progressing across the new rear extension.
Internal walls, floors and structural sections rebuilt during the full refurbishment.
Scaffolding and structural steelwork installed around the large house extension.
STAGE 3 – Structural Steel & Preparation for the Rear Extension
At this early stage, the rear extension itself had not yet been constructed. The principal structural steelwork was installed to support the enlarged first floor, reconstructed roof and new loft accommodation, while also preparing the rear elevation for the later extension.
Load-bearing beams and columns were carefully positioned to transfer loads safely through the building and enable the original rear wall to be opened at a later stage.
Completing this primary structural work first allowed the upper floors, loft conversion and new roof to progress before construction of the large ground-floor rear extension began.
A major structural steel beam positioned during construction of the house extension.
Structural steel framework installed across the new rear extension.
Structural extension works progressing within the extensive scaffolding installation.
Steel beams forming the load-bearing framework of the new extension.
Steel framework constructed across the full width of the rear extension.
Steel beams and new timber floor joists installed as part of the structural transformation.
Steel beams installed to create the open structure of the new rear extension.
Structural works progressing across the house extension and loft conversion.
The large rear and upper-floor house extension taking shape in Weybridge.
Load-bearing steel beams installed within the opened rear section of the house.
STAGE 4 – First-Floor Extension & New Floor Structure
New timber floor joists were installed above the extended ground floor to create the enlarged first-floor accommodation.
The new floor structure was connected to the existing house and supported by the structural steel framework below. Openings were formed for staircases, services and circulation between the original and extended sections.
Timber partition walls were then constructed to establish the new room layouts, bedrooms, bathrooms and connecting hallways.
The extension was designed to integrate with the original house rather than feel like a separate addition.
Marked first-floor plan showing bedrooms, en-suites and installation routes.
Architectural floor plan showing the proposed first-floor layout.
Steel beams and new timber floor joists installed as part of the structural transformation.
New timber floor joists forming the structure of the extended first floor.
Structural preparation underway for the new first-floor extension.
Two-storey extension construction progressing behind the full scaffolding system.
Structural extension works progressing within the extensive scaffolding installation.
Timber stud walls constructed to form the new first-floor room layout.
New timber floor joists constructed to form the loft conversion floor.
STAGE 5 – Loft Conversion, Dormers & Roof Framing
Above the first floor, a bespoke loft conversionwas constructed to make use of the previously underused roof space.
New timber rafters, structural supports and internal framing formed the enlarged roof and loft accommodation. Several dormers were incorporated into the design to increase headroom, usable floor area and natural light.
Additional roof windows were installed across the sloping roof sections, creating bright internal rooms while maintaining the overall character of the property.
Timber stud walls were then added inside the loft to form the new bedrooms, circulation areas and storage spaces.
Large steel frame installed to support the reconstructed upper floor and roof.
Structural steel beams installed around the new loft conversion floor.
Steel beams and braces installed across the new extension structure.
Load-bearing steel frame completed before construction of the new timber roof.
New timber rafters constructed around the structural steel roof supports.
New timber rafters forming the extended and converted roof structure.
Timber roof framing installed across the new loft conversion.
New dormer structure framed within the reconstructed timber roof.
Timber frame forming the new dormer window and roof structure.
Timber dormer roof structure taking shape within the new roof frame.
New timber dormer frame constructed within the extended roof.
Dormer framing progressing as part of the new loft conversion.
New roof timbers and dormer structure constructed above the converted loft.
New roof trusses and dormer framing constructed within the loft conversion.
Structural timber framing forming the new main roof and dormer connection.
Timber roof framework in progress as part of a loft conversion project in Weybridge, delivered by Art & Build Ltd construction company.
New timber roof structure constructed as part of the full house transformation.
The new loft space taking shape beneath the reconstructed roof.
Timber framing forming the new rooms and circulation space within the loft conversion.
Timber stud walls constructed to form a new bedroom within the loft conversion.
Thermal insulation installed across the sloping loft roof structure.
The original roof was substantially rebuilt as part of the extension and loft conversion works.
The new roofing system included:
New structural timber rafters and dormer frames
Thermal insulation installed between the roof members
Breathable roofing membrane
New timber battens
Roof valleys and junction details
New roof tiles
Dormer roofs and tile-hung dormer walls
Multiple rooflights
The completed roof improved weather protection, insulation performance and durability while accommodating the newly created loft rooms.
The roof design also helped integrate the extension and loft conversion with the appearance of the original house.
Timber roof battens installed across the new membrane-covered roof.
Breathable roofing membrane installed over the new timber roof structure.
A structural opening prepared for installation of a new loft rooflight.
Timber roof battens completed before installation of the new roof tiles.
Roof battens installed across the new loft conversion structure.
New roof valley formed where the reconstructed roof sections meet.
New timber battens installed over the breathable roof membrane.
New roof tiles installed as part of the extensive house refurbishment.
New tiles installed across the reconstructed house extension roof.
Roof valley tiles installed between the new loft conversion roof slopes.
Roof tiling completed around the new loft conversion and rooflights.
Roof tiling and dormer finishing works progressing within the scaffolding.
New tile-hung dormer walls and tiled dormer roofs installed in Weybridge.
New tiled roof and finished valley completed above the extended property.
New dormer roof and brick side sections constructed within the existing roofline.
The property’s plumbing, heating and electrical systems were comprehensively upgraded as part of the refurbishment.
New hot and cold water pipes were routed throughout the house and clearly labelled before being brought together at the central distribution point. Heating and plumbing services were carefully installed within floors, walls and service zones before the surfaces were closed.
Underfloor heating was installed across selected areas using both between-joist systems and pipework laid over prepared floor insulation.
The project also included a full electrical upgrade designed to meet the requirements of the enlarged and reconfigured property.
This coordinated first-fix stage was essential before plasterboarding, flooring and final bathroom or kitchen installation could begin.
Underfloor heating pipework installed between the new timber floor joists.
Underfloor heating circuits installed across the extended floor area.
Complete plumbing and central heating installation serving the refurbished Weybridge property.
Labelled hot and cold water pipes gathered at the future manifold location.
New insulated water and heating pipes routed through a prepared floor channel.
New heating and plumbing services grouped and routed through the floor.
Insulated plumbing pipework routed through the floor during the full refurbishment.
New timber partition framing constructed above the prepared ground-floor services.
Ground floor protected and prepared before installation of the new screed.
Underfloor heating pipework installed across the prepared floor system.
STAGE 8 – Internal Framing & Full House Refurbishment
Once the principal structure and services were in place, work progressed to the internal fit-out.
New timber partitions created bedrooms, bathrooms, hallways and storage areas across the extended first floor and loft conversion. Walls and sloping ceilings were insulated, boarded and plastered in preparation for decoration.
The full house refurbishment included:
Six modernised bathrooms
A new contemporary kitchen
New internal doors and joinery
New oak staircases
Oak and engineered timber flooring
Large-format tiled floors
New plastered walls and ceilings
Reconfigured hallways and circulation areas
New lighting, sockets and electrical fittings
The internal layout was designed to provide a more natural flow between rooms and improved connections between the different levels of the house.
New timber partition walls constructed as part of the internal house refurbishment.
Internal timber framing progressing throughout the new loft conversion.
Timber stud walls constructed to form a new bedroom within the loft conversion.
Internal timber framing forming the new open-plan extension layout.
New open-plan room plastered and prepared for its final fixtures and finishes.
New internal hallway prepared for flooring, joinery and final decoration.
Plasterboard installed across the walls and sloping ceiling of the new loft room.
Multiple large roof windows installed to bring natural light into the converted loft.
New loft room formed beneath a bank of large roof windows.
New oak staircase installed during the full Weybridge house refurbishment.
New oak staircase and landing installed during the full house refurbishment.
New bathtub positioned during construction of one of the refurbished bathrooms.
New internal door and timber frame installed within the refurbished property.
New oak flooring installed and finished with a smooth natural surface.
STAGE 9 – Bathrooms, Kitchen & Interior Finishes
Six bathrooms were refurbished or newly created across the property.
The bathroom fit-outs included large-format marble-effect tiles, frameless glass shower enclosures, recessed storage niches, concealed cisterns, wall-hung toilets, built-in baths, contemporary vanity units and heated towel rails.
A new kitchen was installed within the extended open-plan ground floor, creating a central space for cooking, dining and family living.
Natural oak flooring and staircases introduced warmth throughout the interior, while white walls, modern internal doors and recessed lighting created a clean and consistent finish.
These details helped unify the original house, extension and loft conversion into one cohesive home.
New bathtub positioned during construction of one of the refurbished bathrooms.
Modern bathroom fit-out progressing around the bath and tiled wall sections.
Two recessed bathroom storage niches integrated into the tiled wall.
Concealed toilet frame installed and enclosed within the bathroom wall structure.
Bathroom tiling and built-in furniture installation progressing around the bath.
Large-format marble-effect tiles installed throughout the new bathroom.
Moisture-resistant wall boarding installed before completion of the bathroom tiling.
Built-in bath and wall-hung toilet installed within the completed luxury bathroom.
Completed family bathroom with a built-in bath, wall-hung toilet and modern tiled finishes.
Modern bathroom completed with a built-in bath beneath the large window.
Frameless glass shower enclosure completed within the modern Weybridge bathroom.
Wall-hung toilet installed within the fully tiled luxury bathroom.
Luxury bathroom finished with large-format marble-effect tiles and a frameless glass shower.
Completed family bathroom with marble-effect tiling, a fitted bath and frameless shower.
Built-in bathtub surrounded by large-format marble-effect tiles beneath the window.
Recessed bathroom wall niches formed within moisture-resistant tile backer boards.
Large-format tiles installed across the new walk-in shower walls and floor.
A completed bathroom installation showing the finishing quality and attention to detail homeowners should look for when choosing a building company.
New loft bedroom completed with oak flooring and recessed ceiling lighting.
Spacious completed loft room with natural oak flooring and a sloping ceiling.
Completed loft bedroom with oak flooring and a contrasting feature wall.
Completed loft room with multiple roof windows providing abundant natural light.
New loft bedroom completed with natural oak flooring and clean contemporary finishes.
New oak staircase and matching landing installed within the refurbished house.
Oak staircase and matching timber flooring completed during the house refurbishment.
Completed hallway with a new oak staircase and contemporary balustrade.
Bright modern hallway completed with polished floor tiles and white internal doors.
Completed ground-floor hallway with an oak staircase, large-format floor tiles and access to the new kitchen.
Open-plan kitchen extension connected to the garden through large sliding glass doors.
Large sliding patio doors and corner glazing were installed across the new rear extension, bringing natural light deep into the open-plan interior.
The external extension was finished with clean rendered surfaces and a projecting flat roof, creating a contemporary contrast with the property’s traditional brick and tile-hung elevations.
The later external stages also included:
New patio areas
Replacement windows
New entrance door
Exterior detailing and decoration
New gravel driveway
Improvements to the connection between the house and garden
The completed project combines the character of the original Weybridge property with a modern extension, additional loft accommodation and comprehensively refurbished interiors.
Liquid waterproofing membrane applied across the new flat extension roof.
Liquid waterproof membrane applied around the roof edges and prepared sections.
Front driveway completed as part of the full Weybridge house refurbishment.
Completed house extension, new roof and loft conversion at the Weybridge property.
The front elevation following completion of the major house refurbishment.
Modern entrance door installed as part of the completed exterior refurbishment.
Three new dormers constructed across the converted roof space.
A completed loft conversion and extension project showing the type of finished result homeowners should expect from an experienced building company.
Completed rear house extension with corner glazing and a contemporary flat roof.
Modern rear extension completed with large sliding doors and glazed corner detailing.
Completed house extension, loft conversion and full refurbishment in Weybridge, Surrey.
A completed home extension and loft conversion project showing the final result of a larger residential refurbishment.
Open-plan kitchen extension connected to the garden through large sliding glass doors.
Contemporary exterior finish completed around the new rear house extension.
Modern rear extension completed with large sliding doors and a new patio.
New white uPVC windows installed within the refurbished external elevation.
Large sliding glazed doors installed across the new rear house extension.
Spacious open-plan interior created within the new rear house extension.
Open-plan living space connected to the patio and garden through large sliding doors.
New patio area extending directly from the large glazed house extension.
KEY PROJECT OUTCOMES
This large-scale transformation significantly increased the usable floor area across the ground floor, first floor and converted loft while improving the overall layout and functionality of the house.
The completed project delivered:
A spacious open-plan kitchen, dining and family living area
Additional first-floor and loft accommodation
Better circulation between the different levels of the property
A direct connection between the interior, patio and rear garden
A completely reconstructed and insulated roof
Six modernised and newly fitted bathrooms
Fully upgraded plumbing, heating and electrical systems
New oak staircases, timber flooring, doors and internal finishes
A contemporary rear extension integrated with the original house
Improved natural light, energy performance and long-term durability
The result is a cohesive family home in which the original property, new house extension, loft conversion and full house refurbishment work together as one complete design.
STRUCTURAL COORDINATION & BUILDING REGULATIONS
Projects combining a first-floor enlargement, loft conversion, roof reconstruction and large rear extension require detailed structural planning and careful sequencing.
The principal steel frame had to support the enlarged upper floors and new roof while also preparing the rear elevation for the later ground-floor extension. Completing the upper structural work first allowed the loft conversion, roofing and internal refurbishment to progress before the house was opened fully for the rear extension.
The structural alterations were completed in accordance with applicable UK Building Regulations, including requirements relating to:
Structural stability and load-bearing construction
Fire safety and protected escape routes
Thermal insulation and energy efficiency
Roof ventilation and weather protection
Staircase access, guarding and headroom
Electrical safety
Plumbing, heating and drainage
Bathroom ventilation and moisture protection
The project was delivered through coordinated construction stages — from scaffolding and demolition to structural steelwork, roofing, first-fix installations, interior fit-out and final external works.
This staged approach helped maintain continuity, precision and quality throughout one of the most extensive residential transformations completed by Art & Build Ltd.
Planning a Similar Project?
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If you are considering a house extension or loft conversion, our experienced team provides complete project management from structural design through to final interior finishes.
Contact Art & Build Ltd to discuss your project and explore how we can transform your home with specialist extension and conversion expertise.
Explore additional extension and loft conversion projects completed by Art & Build Ltd, demonstrating our approach to structural design, space optimisation and long-term value.
