Architects for Extensions & Planning Applications  in Battersea

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

All In One Architectural Solution In Battersea

Planning approved by London Borough of Wandsworth — 8 weeks standard.
Article 4 Directions cover many SW11 streets — check PD rights first.
Full design, planning, and building regulations included in one fee.
Loft conversions available — rear dormer and mansard options across SW11.
In-house structural engineer included — no separate specialist needed.
98% planning approval rate — including Article 4 applications in SW11.

Extension Architecture handles planning applications, house extensions, and loft conversions across Battersea and the wider London Borough of Wandsworth — covering SW11, SW8 and SW18. Most single-storey rear extensions qualify as Permitted Development (3m terraced / 4m detached), though Article 4 Directions apply in many SW11 streets. Wandsworth decisions take 8 weeks. Free quote today.

We only deliver excellence

48⁺

Projects completed in Battersea

1215 ⁺

Our total projects completed in London & Surrey

Locations in Battersea

Wandsworth • Battersea • Putney • Tooting • Balham • Clapham Junction • Earlsfield • Southfields • Roehampton • East Putney • West Hill • Nine Elms

Postcodes Served

SW11 • SW8 • SW18 • SW12 • SW15 • SW17

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

Extension Architecture’s Gallery

What Makes Battersea Special?

Extension Architecture specializes in navigating the intricacies of planning applications in Battersea. We understand the local regulations, zoning laws, and planning processes, ensuring a seamless experience for our clients. Our experienced team will work closely with you to prepare thorough planning drawings, documents, and applications required for submission to the appropriate authorities.

If you’re considering converting a building into flats or kitchen solutions in Battersea, a single-storey extension, Extension Architecture is here to assist you every step of the way. Our team of dedicated Battersea architects and structural engineers in Battersea are passionate about helping you realize your vision. Through the use of cutting-edge 3D imagery, we’ll bring your creative ideas to life and provide a clear picture of the anticipated renovation outcome.

Victorian terraces dominate SW11 — rear extensions add maximum value.
Article 4 Directions cover large parts of Battersea — always check first.
Battersea Power Station regeneration has significantly raised SW11 values.
Wandsworth Council has clear policies and meets 8-week decision targets.

Interior fit-out, Battersea

What Our Clients Say About
Extension Architecture

Interior fit-out, Battersea

Battersea House Extension Architects

House extensions are a versatile option, allowing you to expand your living space in various ways, from enlarging your kitchen to adding a new living room or creating a cozy garden room. Battersea architects and builders can tailor house extensions to suit your needs and aesthetic preferences.

Battersea’s thriving architectural and construction community is well-versed in delivering high-quality loft conversions and house extensions, providing you with valuable insights and expertise. When considering these projects in Battersea, you can rely on local professionals to make the most of your property while adhering to planning regulations and enhancing your overall quality of life.

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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 Battersea 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 today

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

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Years of Experience

17

Any Questions?

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

It depends on your street. Large parts of Battersea SW11 fall under Article 4 Directions, which remove Permitted Development rights — meaning even a modest rear extension needs full planning permission from Wandsworth Council. Where Permitted Development still applies, size limits are 3m for terraced houses and 4m for detached. Wandsworth’s standard decision time is 8 weeks. Extension Architecture checks your property’s Article 4 and PD status free before you commit to a design.

An Article 4 Direction is a legal notice that removes a homeowner’s Permitted Development rights, meaning works that would normally be allowed without an application now require full planning permission. Wandsworth Council applies Article 4 Directions across large parts of Battersea SW11, so even a modest rear extension needs council approval. The current planning application fee is £258, with an 8-week standard decision time. Extension Architecture checks Article 4 status for every Battersea enquiry at no cost.

A single-storey rear extension in Battersea typically costs more than the London average due to higher build rates in SW11, with architectural fees, planning drawings, and building regulations usually charged as one combined package by Extension Architecture rather than separate line items. Exact cost depends on size, specification, and whether structural work (steel beams, underpinning) is needed. Extension Architecture provides a free, no-obligation quote based on your property and project scope.

Standard planning applications to Wandsworth Council take 8 weeks from validation to decision. More complex applications — larger extensions, conservation area sites, or Article 4 cases with objections — can take up to 13 weeks. Extension Architecture manages the full submission process, including pre-application checks, to avoid delays caused by incomplete drawings or missing documents.

Single-storey rear extensions and side return extensions suit Battersea’s Victorian terraces best, since they add kitchen or living space without altering the street-facing facade. Loft conversions (rear dormer or mansard) are the next most common project in SW11. Because much of Battersea is covered by Article 4 Directions, most of these still require full planning permission rather than Permitted Development — Extension Architecture advises on the right option for your specific property and street.

Yes. Extension Architecture is a RIBA-chartered and ARB-registered practice with 17 years of experience and 1,215+ completed projects across London and Surrey, including 48+ in Battersea specifically. The team includes an in-house structural engineer, which is uncommon among smaller architecture practices, and the firm holds a 98% planning approval rate on submitted applications, including Article 4 cases.

Extension Architecture’s service covers architectural design, the full planning application to Wandsworth Council, Building Regulations drawings, and 3D visualisations, delivered as one package rather than separately priced stages. An in-house structural engineer is included at no extra coordination cost. The team also supports clients through construction with a turnkey approach, including help sourcing builders and fit-out procurement.

Yes, but conservation area status in parts of Battersea adds extra design scrutiny from Wandsworth Council, particularly around materials, roofline, and street-facing changes — Permitted Development rights are also more restricted in conservation areas. Extension Architecture checks conservation area and Article 4 status together for every Battersea enquiry, since the two often overlap in SW11’s Victorian terrace streets.

Extension Architecture covers Battersea and the surrounding London Borough of Wandsworth, including postcodes SW11, SW8, SW18, SW4, SW6, and SW12. This includes areas such as Clapham Junction, Nine Elms, and the wider Battersea Power Station regeneration zone, where property values and extension activity have both increased significantly in recent years.

Architects for Extensions & Planning Applications  in Battersea