Wandsworth · South West London
Wandsworth is one of London's biggest boroughs, and it is packed with Victorian terraces that are full of potential. From the tree-lined streets around Wandsworth Common to the family neighbourhoods of Balham and Tooting, we design and build the extensions and conversions that make the most of what is already there.
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Working in Wandsworth
Most of Wandsworth is made up of Victorian and Edwardian terraces - the kind of houses that were built with small kitchens and dark rear rooms. A well-designed rear extension can completely transform the ground floor, opening it up into the kind of light, open-plan space that actually works for how families live today.
Side return extensions are especially popular along the terraced streets of Balham, Tooting and Earlsfield, where that narrow alley down the side of the house is just wasted space waiting to be used. Combine a side return with a rear extension as a wrap-around and you get the most out of the ground floor in a single project.
Loft conversions are another natural fit. The pitched roofs on Wandsworth terraces lend themselves to dormer conversions - and because a rear dormer often falls under Permitted Development, you can add a whole extra bedroom and bathroom without needing planning permission. As experienced residential architectural designers in London, we know how to get the best from these houses.
Services in Wandsworth
We handle architecture and construction under one contract. One team from the first sketch through to the finished build, no separate builder to find. This design-and-build approach saves time, reduces cost and removes the risk of miscommunication between design and build.
Most of our work in Wandsworth centres on ground-floor extensions and loft conversions, but we also take on double storey extensions, whole-house renovations, HMO conversions and interior design projects. Whatever the scope, we provide full architectural drawings, handle the planning application and manage the build through to completion.
Planning in Wandsworth
Wandsworth Council has a reputation for being one of the more supportive councils in London when it comes to well-designed residential extensions. Sensible proposals tend to move through the system without unnecessary friction. The council understands that extending and improving existing homes is a good thing for the borough.
That said, there are areas where you need to be more careful. Wandsworth Common, St John's Hill and parts of Putney sit within conservation areas, where Permitted Development rights can be restricted and the council pays closer attention to materials, scale and how new work relates to the existing streetscape. Some streets also have Article 4 Directions that remove PD rights altogether.
Outside conservation areas, standard PD rules generally apply. A single storey rear extension up to 6 metres on a terraced or semi-detached house can usually proceed without planning permission. We check the planning position for every property at the start of a project so you know exactly where you stand.
Cost Guide
Construction costs in Wandsworth typically range from £2,200 to £3,500 per square metre, depending on specification and complexity. A rear extension on a Victorian terrace usually costs between £50,000 and £90,000 for the build. A combined rear and side return extension as a wrap-around comes in at £60,000 to £100,000.
Loft conversions range from £50,000 to £90,000 depending on whether you opt for a standard rear dormer or a larger mansard. Double storey extensions typically cost between £100,000 and £180,000. Whole-house renovations vary widely but usually start at £150,000 for a full terrace refurbishment.
Professional fees for architecture, structural engineering and building regulations usually add 10 to 15 percent on top of the construction cost. For broader London pricing, see our house extension cost guide.
Cost Calculator
Tell us the size, location and finish level. Our calculator returns a realistic range for your extension or loft conversion, with a detailed breakdown available.
Property Types
The housing across Wandsworth is varied. Around Wandsworth Town and Earlsfield you will find classic Victorian terraces - two and three storeys with compact rear gardens and side returns. Balham and Tooting have a mix of Victorian terraces and larger Edwardian semi-detached houses. These properties are ideal candidates for rear extensions, side return extensions and loft conversions.
Battersea ranges from mansion blocks near the park to the massive regeneration around Nine Elms and Battersea Power Station. Southfields and Putney have their own distinct character, with some larger Edwardian and inter-war properties. Each pocket of the borough brings different constraints and different possibilities.
Nearby Areas
Alongside Wandsworth, we regularly take on projects in Balham, Tooting, Putney, Battersea, Clapham, Earlsfield and Southfields. We also cover the neighbouring boroughs including Wimbledon (Merton) and Richmond.
Outside South London, we work across all of Greater London and within a 30-mile radius, including Chelsea, Kensington, Hampstead, Islington, Hackney, Camden and Surrey.
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