Architects for Extensions & Planning Applications in Putney

Planning permission, architectural design and project management delivered end-to-end by a RIBA-chartered team with a 98% approval rate across Putney.

All In One Architectural Solution In Putney

Planning applications handled for Wandsworth — council decisions arrive in 8 weeks standard.
Article 4 Directions affect many SW15 streets — we check PD rights first.
Full design, planning, and building regulations delivered together under one fixed fee.
Loft conversions available — Velux, dormer, and hip-to-gable options all designed in-house.
In-house structural engineer included — no separate specialist needed for your calculations.
A 98% planning approval rate achieved across 42+ completed Putney projects locally.

We're based on Roehampton Lane and regularly work across Putney, including East Putney, West Putney, Putney Heath and the riverside conservation areas. We also undertake projects in neighbouring Wandsworth Town and Wimbledon, helping homeowners navigate planning permission, architectural design and construction from start to finish.

We only deliver excellence

42⁺

Projects completed in Putney

2220 ⁺

Our total projects completed in London & Surrey

Locations in Putney

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

Postcodes Served

SW15, SW18, SW19

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 Putney Architects Extension & Loft Conversion Projects

What makes Putney Special?

Putney’s architectural landscape combines historic and modern style, making it a unique part of London. The affluent area in south-west London is part of the London Borough of Wandsworth. This affluent English neighbourhood is a collection of Victorian and Edwardian homes known for their spacious interiors, high ceilings and common features such as red brick exteriors and bay windows. Terraced Victorian and Edwardian homes in Putney sold for an average of £1.1 million over the past year (Rightmove/HM Land Registry, 2026), and well-designed extensions and loft conversions consistently add to that value rather than just adding square footage. The development also showcases a modern aesthetic, featuring open living, large windows and eco-features. The combination of architectural styles appeals to buyers of all levels, increasing the attractiveness of the area.

Understanding local architectural styles is crucial when working on extension projects in Putney, a vibrant area with a blend of historical and contemporary influences. This understanding not only shapes the aesthetic outcome but also ensures that new additions harmoniously integrate with the existing environment. As local Putney architects, we have been successful in preserving the historical charm of the area while incorporating modern elements, ensuring that Putney retains its character amidst ongoing urban development.

Putney has more than a dozen conservation areas, including West Putney, Putney Heath, Putney Lower Common, Oxford Road, Dover House Estate, Westmead, Deodar Road and Parkfields - each with its own rules on materials, rooflines and extensions
Several of these - including Dover House Estate, Putney Lower Common and Roehampton Village - also carry Article 4 Directions, which remove permitted development rights on top of the conservation area controls
If you're not sure whether your street falls inside one of these areas, we check this for free before any design work begins

Interior fit-out, Putney

What Our Clients Say About
Extension Architecture

Interior fit-out, Putney

Putney Planning Applications and Architectural Services

17 Years of Local Experience in Putney

We’ve been designing extensions and managing planning applications in Putney for 17 years, and we’re currently handling 60+ live applications with Wandsworth Council — which means we have a very current picture of what typically gets approved locally, and what tends to draw an objection.

Recent Putney work includes:

– A feasibility study on Dyers Lane, exploring the conversion of an existing house into flats
– Single-storey rear extensions on Medfield Street and Roseneath Road
– A double-storey extension and full refurbishment on Putney Bridge Road

Every project starts the same way: a free desktop check of your property’s planning history and any conservation area or Article 4 restrictions, before we design a single line.

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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 Putney 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

Most firms outsource this, so having it in-house helps avoid the delays and costs of coordinating separate consultants. 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 every client to curate spaces tailored to their taste and how they live. 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're planning a house extension or loft conversion in Putney, our architects can guide you through planning permission, design and construction - start with a free feasibility check.

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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

Often, yes. Many streets in Putney are subject to Article 4 Directions, which remove automatic Permitted Development rights. This means even a modest single-storey rear extension may require a full planning application to Wandsworth Council. Some non-Article 4 streets may still allow extensions under Permitted Development without the need for an application. As planning rules vary from property to property, Extension Architecture checks your specific property’s planning status free of charge before any design work begins.

Putney’s Victorian and Edwardian terraces across SW15 and SW18 typically suit single-storey rear extensions, side returns, wraparound extensions, double-storey additions, and loft conversions (Velux, dormer, or hip-to-gable). Mid-terraces usually work best with a side return or rear extension, while corner and semi-detached plots have more scope for wraparound designs. Extension Architecture advises on the right option for your specific property and budget as part of a free initial consultation.

Wandsworth Council targets 8 weeks for standard householder applications from validation, rising to around 13 weeks for conservation areas or more complex cases; once granted, permission stays valid for 3 years. Design work and pre-application checks typically add several weeks before submission, so most homeowners should budget 3-4 months from first consultation to decision. Extension Architecture tracks every application and responds to council queries directly on the client’s behalf.

Look for RIBA-chartered and ARB-registered status, a proven track record with Wandsworth Council specifically, and ideally an in-house structural engineer. Only around 1 in 20 firms offer this service, which can help avoid costly delays caused by coordinating separate consultants. Extension Architecture has completed 42+ Putney projects (2,220+ across London and Surrey) over 17 years, maintains a 98% planning approval rate, and currently has around 60+ live applications with Wandsworth Council. A free feasibility check before agreeing any fees is a strong indicator that a firm is confident in its process.

Architect fees for a house extension in Putney typically vary depending on the project scope and whether services such as planning, building regulations, and interior design are included. Fees are usually structured as either a percentage of the build cost or a fixed fee agreed after an initial free feasibility check. Extension Architecture provides a free feasibility check covering planning options and likely costs before any fees are agreed, helping homeowners understand the full picture before making a commitment.

A refusal is not the end of the process. Most refused applications can be revised and resubmitted, or appealed to the Planning Inspectorate. Extension Architecture’s 98% approval rate reflects a strong focus on pre-application checks and design reviews to help reduce this risk from the outset. If a refusal does occur, the team reviews the council’s reasons, makes the necessary design amendments, and resubmits the application in most cases without an additional design fee.

You can legally submit a planning application yourself, but an architect familiar with Wandsworth Council’s specific requirements significantly improves approval chances, especially on Article 4 streets or in conservation areas. Extension Architecture currently manages 60+ live applications with Wandsworth Council, giving the team direct insight into what typically gets approved locally versus what attracts objections.

The service covers planning applications, architectural design, building regulations drawings, and project management under one fixed fee, plus an in-house structural engineer and interior design support if needed. This “one-stop” approach means clients don’t need to separately source and coordinate a structural engineer or interior designer, which reduces delays and design inconsistencies.

Architects for Extensions & Planning Applications in Putney