Architects for Extensions & Planning Applications  in Fulham

Planning permission, architectural design and project management  delivered end-to-end by a multi-award-winning local team.

All In One Architectural Solution In Fulham

Planning applications handled for Hammersmith & Fulham Council — 8-week standard decision target.
Article 4 affects some Fulham properties — we always check first.
Full design, planning, and building regulations service under one fixed fee.
Loft conversions available — Velux, dormer, and hip-to-gable options in-house.
In-house structural engineer included — no separate specialist ever needed.
98% planning approval rate across all completed Fulham projects to date.

Extension Architecture handles planning applications, house extensions, and loft conversions across Fulham and the wider London Borough of Hammersmith & Fulham area, including SW6, SW10, W6. Article 4 restrictions affect some properties. Our in-house structural engineer and RIBA-chartered team manage every stage. Council decisions take 8 weeks. Get your free quote today.

We only deliver excellence

80⁺

Projects completed in Fulham Broadway

2220 ⁺

Our total projects completed in London & Surrey

Locations in Fulham Broadway

Hammersmith • Fulham • Shepherd’s Bush • White City • West Kensington • Parsons Green • Sands End • Munster Village • College Park (part) • Wormwood Scrubs (part)

Postcodes Served

SW6, SW10, W6, W12, W14

Our Expertise

Planning Application Drawings
Council-ready drawings, fast

3D Visualisations
See it before building

Retrospective Planning
Fix unpermitted works

Building Regulation Drawings
Safe, compliant drawings

Commercial Development Consultancy
Change of use experts

Interior Design
Finishes inside out

Spatial Planning & Layout
Smarter room layouts

Feasibility Consultancy
Know what’s possible

Recent Architects Fulham Extension & Loft Conversion Projects

What makes Fulham Special?

Fulham is defined by architectural rhythm and residential cohesion. Elegant Victorian and Edwardian terraces line its streets, creating a consistent brick language, measured rooflines and refined proportions that give the area its identity. Unlike grander West London districts, Fulham’s appeal lies in this composure. Homes sit shoulder to shoulder with quiet confidence, and any new architectural intervention must respect that established cadence.

Its proximity to the River Thames and green spaces such as Bishops Park adds another layer to its character, influencing how properties engage with light, garden depth and outdoor living. Architectural success here is rarely about scale. It is about precision, material discipline and spatial intelligence. The most accomplished projects enhance internal flow and natural light while maintaining the external integrity that makes Fulham so consistently desirable.

Fulham has a mix of Victorian, Edwardian, and 1930s properties across SW6.
Article 4 affects some Fulham streets — always verify your specific address.
Well-designed extensions consistently add long-term value to Fulham properties.
London Council runs a clear 8-week householder planning decision process.

Interior fit-out, Fulham

What Our Clients Say About
Extension Architecture

Interior fit-out, Fulham

Fulham Planning Applications and Architectural Services

Planning in Fulham is closely shaped by conservation considerations, neighbour impact and visual alignment within established terraces. Many streets fall within protected areas, meaning proposals must demonstrate clear contextual awareness and disciplined proportion. Rear extensions, loft conversions and basement schemes are assessed not only for scale but for their relationship to adjoining properties.

We manage the full planning process from feasibility through submission, preparing detailed drawings and coordinating supporting documentation to strengthen approval prospects. Early strategic design decisions are essential in Fulham, where minor adjustments in height, massing or roof form can significantly influence outcome. By aligning architectural intent with policy from the outset, we secure solutions that satisfy regulatory requirements while delivering meaningful spatial transformation.

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Explore before & after visuals of our extension builder projects

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Before

After

Why choose Extension Architecture?

Our experienced team of Fulham Broadway architects will take the lead and create a thoughtful design that maximizes the available space and is tailored to your tastes. We will guide you through the intricacies of the planning process and discuss every aspect of the project in detail. Our architects will carefully survey your property to ensure no detail is overlooked. We will be with you throughout the process, providing clearand comprehensive instructions while walking you through the planning, application and construction process.

One-Stop Solution

Our firm provides a comprehensive range of services under one roof, from planning and architectural design to intricate interior and immersive design, and expertly manages the complexities of the construction process. We have delivered projects of various scales and budgets, from small home extensions to large new builds, for a diverse clientele.

In-house Structural Engineer

Our in-house structural engineer—an advantage that only 1 in 20 firms can offer. This is crucial, as significant time is often lost consulting multiple specialists, which can lead to additional costs. With a structural engineer on our team, we ensure a fully collaborative and seamless design-build process, minimizing contingencies and preventing design inaccuracies.

Interior Design + Architecture

Our team includes interior designers who work closely with the clients, especially the ‘ladies’ of the house to curate the dream spaces tailored to their requirements. These processes include fun yet crucial processes like selecting wall finishes, color schemes, soft furnishings, flooring. Having architects and interior designers under one roof allows for less contingencies.

Turn-Key Approach

We provide support throughout the entire building process, embracing a ‘turnkey approach’ to ensure a smooth and efficient project from start to finish. Additionally, we assist in reducing build costs by aiding in the procurement of all internal fit-outs, including sanitaryware, kitchens, and more. It’s a zero hassle solution for clients.

Start Planning an Extension Home Today

If you are planning a house extension in London, our architects can guide you through the entire process from concept design to construction.

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Architectural design consultation and home extension planning services

Years of Experience

17

Any Questions?

Didn’t find your answer? Feel free to reach out

Whether you need planning permission for a house extension in Fulham depends on your specific address and the type of extension proposed. Most single-storey rear extensions qualify as Permitted Development — allowing you to build up to 3 metres beyond a terraced or semi-detached house, or 4 metres beyond a detached house, without making a planning application to London Borough of Hammersmith & Fulham. However, article 4 + conservation areas restrictions mean many Fulham properties do not retain standard PD rights. Article 4 Directions, conservation area designations, and Green Belt land all remove PD rights and require a full householder application. London Borough of Hammersmith & Fulham targets an 8-week decision from the date your application is validated. Our team checks your specific address, confirms your PD eligibility, and advises on the most appropriate planning route at no charge before any design fee is agreed or any work is commissioned.

The cost of a house extension in Fulham varies depending on the size, type, specification, and your contractor’s pricing. As a rough guide, single-storey rear extensions in the SW6, SW10, W6 area typically run from around £1,800 per square metre for a standard specification up to £2,800 per square metre or more for a high-end finish. A typical 20-square-metre rear extension therefore costs in the region of £36,000–£56,000 for the construction alone. On top of that, you should budget for architectural drawings, planning application, structural engineering calculations, building regulations drawings and inspections. Our fixed-fee service covers all design and planning stages in one agreed package, and our in-house structural engineer means no separate structural fee. We provide a full cost breakdown at the feasibility stage before any commitment is required.

Loft conversions in Fulham are governed by a combination of national Permitted Development rules and local London Borough of Hammersmith & Fulham policies. Under PD, you can add up to 40 cubic metres of additional roof space on a terraced house or 50 cubic metres on a detached or semi-detached house. Rear dormers, Velux rooflights, and hip-to-gable conversions are among the most common options across SW6, SW10, W6. However, article 4 + conservation areas means some properties lose PD rights and all loft conversion types require a full planning application from London Borough of Hammersmith & Fulham. Any property in a conservation area, listed building, or Article 4 zone will need planning. Building Regulations approval under Parts B, K, and L is always required regardless of PD status and covers fire safety, structural integrity, and thermal performance. Our team advises on PD eligibility free before any design work.

London Borough of Hammersmith & Fulham targets an 8-week decision period for standard householder planning applications from the date of validation. Validation typically takes 5–10 working days from submission, assuming your application is complete and all required documents are included. Conservation area applications and applications requiring a design and access statement may take up to 13 weeks. If London Borough of Hammersmith & Fulham requests further information, the 8-week clock can be paused, which is one reason why well-prepared, complete applications are so important. Pre-application advice from London Borough of Hammersmith & Fulham is available and typically takes 4–6 weeks to receive a written response. Once granted, planning permission is valid for 3 years from the decision date. Our team manages the full submission process, monitors your application through the council’s portal, and responds to any queries or requests for information without delay.

Extension Architecture is a RIBA-chartered, ARB-registered architectural practice with extensive experience handling planning applications and house extension projects across Fulham and the surrounding area. Our team includes an in-house structural engineer — meaning you do not need to appoint a separate structural engineer, saving both cost and coordination time. We hold a 98% planning approval rate across all submitted applications and understand how London Borough of Hammersmith & Fulham assesses householder applications, including the article 4 + conservation areas constraints specific to Fulham. From your first enquiry, we offer a free feasibility assessment covering PD eligibility, planning routes, and realistic timescales — no design fee is charged until you are happy to proceed. We handle everything from initial survey and design through planning submission, building regulations, and contractor procurement across SW6, SW10, W6 and beyond.

Architects for Extensions & Planning Applications  in Fulham