Single Storey Rear Extension in Clapham Common
Wandsworth , London
Status: Completed
Location: South West London, Wandsworth, Clapham Common-Conservation Area
Scope of works: Rear Ground Floor Single single-storey extension, open plan , and full deep refurbishment.
The existing terraced house:
This Victorian terraced house in Clapham, located within a conservation area under Wandsworth Council, was found in very poor condition—almost derelict when first surveyed. Aside from the front, side and rear external walls, and existing chimneys, the property required complete rebuilding. The proposal involved a substantial increase in the building's footprint, making it essential to design sympathetically to the host structure to secure planning approval.
Oriel fixed window as part of the rear extension
oriel window and window seat as seen from the open plan
Clients’ Brief :
Our clients asked for a modern, cozy home with a completely reconfigured ground floor. They wanted a generous open-plan layout, maximised natural light, and a particularly well-considered master bedroom and ensuite. The transformation needed to respect conservation guidelines while delivering contemporary comfort.
Visual connection between entrance and garden
Design Approach: Open-Plan Kitchen and Ground Floor Layout:
Despite the large size of the new open-plan ground floor, distinct zones were created through thoughtful use of lighting, furniture arrangement, and ceiling design. These zones were carefully integrated to ensure a natural connection between the entrance, reception rooms, and garden.
Structural overhaul: We fully underpinned existing foundations and installed a continuous new steel frame. Existing floors and roof were replaced.
Conservation area sensitivity: Original brick walls and chimneys were retained or repaired. New brickwork was matched, and window and door detail was restrained to suit the setting.
Open-plan focus: Walls were realigned to enable a flow from entrance through the ground floor to the garden extension.create a more dynamic living space.
Rear Single story extension as seen from the garden
Ground-floor rear extension & glazed oriel:
A full-width, ground-floor rear extension significantly expanded the kitchen and living space. The rear elevation features full-height sliding glazing, visually and physically connecting to the garden. A prominent glass oriel "box" frames views and introduces daylight into the dining area—acting as a quiet, contemplative nook that punctuates the modern interior with light and depth.
Kitchen and living
The kitchen is treated as integrated furniture rather than a standalone space. A sculptural central island anchors the layout, while timber cabinetry merges with living-area joinery to maintain calm visual continuity. Materials were kept simple and tactile, and storage is concealed to preserve a clean, serene ambiance.
Kitchen and island
Kitchen ans island
Master bedroom & ensuite
The master suite was designed with a clear material progression: warm timber in the dressing and vanity area, transitioning to stone-clad shower space. A frameless, full-height glass screen separates zones, allowing natural light to flow through and maintaining visual connection while dividing function.
Vanity basin Area and details
Ensuite bathroom shower area
Ensuite Bathroom Vanity and basin area as seen from the showe
Daylight & materials
Improving natural light levels was fundamental. The strategy included extensive glazing, the oriel window, and internal openings to draw daylight into formerly dark spaces. Material choices—timber, stone, brick, and glass—were selected for their texture and subdued tonal palette, ensuring a calm, understated character.
