Extension Build in Hamersmith
This project involved building a new rear extension to expand the ground-floor living area of a property in Hammersmith. The works included full structural alterations, excavation, new foundations, and the installation of a new insulated concrete slab.
The photo shows the early construction stage, where we formed the new extension footprint, installed the damp-proof membrane, set out the service points, and poured the structural slab. All underground drainage and service runs were coordinated before the concrete was placed to ensure a clean and efficient build phase later on.
Brickwork was tied into the existing structure, and the original rear wall was cut back to create an open connection between the old footprint and the new living space. The extension was designed to accommodate a new open-plan kitchen and dining area, with upgraded insulation throughout to meet modern energy-efficiency requirements.
Once the structural and envelope works were completed, the project continued with window and door installation, internal finishes, underfloor heating preparation, and final decorationdelivering a bright, functional extension tailored to the homeowner’s layout.
Project Overview
This project involved delivering a single-storey rear extension to increase the living space of a home in Hammersmith. The client wanted a larger, brighter ground-floor area with improved flow and enough space for a new open-plan kitchen and dining layout.
The Challenge
The existing rear structure was dated, poorly insulated, and restricted the usable footprint of the home. The project required:
- Opening up the original exterior wall
- Installing new foundations
- Coordinating drainage and service routes
- Achieving a clean tie-in between new and existing structures
- Minimising disruption to the occupied areas of the house
- Ground conditions also demanded careful preparation to ensure the new slab and extension remained stable long-term.
Our Approach
We began by forming the new extension footprint and preparing the ground for structural works. This included excavation, service trenching, and installation of a full damp-proof membrane. All drainage, waste outlets, and service penetrations were accurately set out before pouring the new reinforced concrete slab.
The existing rear wall was removed in phases, supported with temporary works, and tied into the new blockwork once the frame was established. Brickwork was matched as closely as possible, and all insulation and moisture-control details were built to modern standards. The new structure was designed to accommodate future elements such as bi-fold doors, underfloor heating, and a new kitchen layout.
Outcome
The completed structural phase delivered a solid and well-insulated base for the final interior works. The extension significantly expanded the ground-floor footprint and created the foundation for a modern open-plan living space. The client gained a more functional layout and the property’s value increased as a result.
