Fulham Extension
Shape Architecture has completed a rear extension and internal refurbishment project at Doneraile Street in Fulham. The project sees an existing dilapidated structure removed and a new elegant extension constructed in its place. Much effort was put into designing a series of rooflights to ensure the interior was flooded with daylight. Computer models helped in this regard, both in designing and communicating clearly with our clients.
Extension Architects
For this project we provided a full service. The activities we undertook can be summarised as follows.
The Survey Process.
We carry out the building survey ourselves. This enables to acquire a thorough understanding of the building quickly . We have a sophisticated IMapper survey station in the practice which produces very accurate surveys. Once carried out and drawn up we will issue our clients with a Measured Survey brochure including plans, elevations and building sections.
The Design Process
To our Clients brief we will produce a number of design options. Each will be described with a mix of 3D models and renders, 2D drawings and hand drawings. Each option clearly communicated. We will then issue our clients with a ‘Proposals Brochure’ for review and development of the preferred option leading to the submission of the planning application which we undertake on behalf of our clients.
The Technical Process
Following the granting of planning permission we move onto the detailed and technical development of the project. This will include all the required technical drawings to demonstrate compliance with building regulations and from which the project can be priced and constructed. We will work with the structural engineer to ensure an integrated design. We will design bathrooms and kitchen and utility spaces. We will design the lighting and electrical layout.
The Competitive Tender Process and Appointment of a Contractor.
We then move onto the tender. We prepare a detailed specification/schedule of works as the pricing document and run a competitive tender process. We will write a tender report and assist our client in selecting the Contractor and put in place the building contract between the contractor and the client.
The Construction Process on Site
When on site with a project we carry out a range of activities on behalf of our client.
We visit site on a regular basis and record our visits with as a Site Visit Report. We will answer questions from the Contractor and Client and also liaise with Building Control as required. We will also process Contractor requests for payment. At the completion of the project we will carry out a snagging list to ensure a high quality of finish. We will also deal with the settlement of the final account
The above describes a full service. You can employ Shape Architecture for those services you require.
Rear Extension FAQs in London
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Do I need planning permission for a rear extension in London?
Many rear extensions in London fall under Permitted Development rights, meaning planning permission may not be required for smaller projects. However, homes in conservation areas, listed buildings, flats, and larger extensions usually require approval from the local planning authority. This will be in the form of a Housholder planning application or if you live in a house divided into flats then a Full application will be submitted. Consulting an experienced London extension specialist can help ensure compliance with all regulations.
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How much does a rear extension cost in London?
The average cost of a rear extension in London typically ranges from £2,500 to £4,000+ per square metre, depending on the size, design, materials, and level of finish. Features such as bi-fold doors, roof lights, underfloor heating, and bespoke kitchens can increase the overall cost. At Shape Architecture we run a competitive tender process to achieve best value for our clients.
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How long does a rear extension take to build?
A typical rear house extension in London takes around 3–6 months to complete once construction begins. Including the design process, structural calculations, planning permission, and building regulations approval, the full project timeline may range from 6–12 months.
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Will a rear extension add value to my London property?
Yes, a professionally designed rear extension can significantly increase property value and improve everyday living space. Open-plan kitchen extensions and rear kitchen diners are especially popular in London and are highly attractive to potential buyers.
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What is the best type of rear extension for London homes?
Popular options for London properties include single-storey rear extensions, wraparound extensions, side return extensions, and rear kitchen extensions. The best choice depends on your property layout, budget, and long-term goals. Many homeowners choose modern glass extensions to maximise natural light and create open-plan living areas. We are presently on site with a large fully glazed rear extension in Elms Road, Clapham.
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Do I need a structural engineer for a rear extension?
Yes, most rear extension projects require a structural engineer to provide calculations for load-bearing walls, steel beams, and foundations. Structural drawings are usually needed for Building Regulations approval. We have excellent longstanding relationships with a number of structural engineers.
Transform Your Home with Shape Architecture
If you have an extension project in mind please feel free to contact Shape Architecture and benefit from our 20 years as a Chartered RIBA practice working in the residential sector. We are happy to visit you to discuss your project and talk through the process.