Architects · Wandsworth

Architects in
Wandsworth

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 buzzing regeneration zones in Battersea, every neighbourhood has its own feel - and its own set of opportunities. We design and build extensions, loft conversions and full renovations that make the most of what is already there.

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Architects Wandsworth - dormer loft conversion on terraced house by Rosace Studio

What We Do in Wandsworth

Extensions, loft conversions and renovations

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.

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. For homes that need more headroom or a bigger footprint upstairs, mansard conversions are also an option.

We handle architecture and construction under one contract. One team from the first sketch through to the finished build, no separate builder to find. You can see a breakdown of what projects typically cost in our guide to house extension costs in London.

  • Rear extensions
  • Side return extensions
  • Loft conversions (dormer and mansard)
  • Double storey extensions
  • Full house renovations
  • Planning applications and Permitted Development

Local Knowledge

Planning and building in Wandsworth borough

Wandsworth Council has a reputation for being one of the more supportive councils in London when it comes to well-designed residential extensions. That does not mean anything goes, but it does mean that 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, and their planning team generally reflects that.

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 - meaning even a small rear extension could need a full application.

The housing across the borough is varied. Around Wandsworth Town and Earlsfield you will find classic Victorian terraces. Balham and Tooting have a mix of terraces and larger Edwardian semis. 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 too. Each pocket of the borough brings different constraints and different possibilities.

We are an architecture and construction studio. One team handles design, planning and building - all under one roof. No separate contractor to source, no gaps between what gets drawn and what gets built.

Recent Projects

Selected work across Wandsworth and South London

Dormer loft conversion Wandsworth terrace
Rear dormer on Victorian terrace Wandsworth
Side return extension interior South London
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Common Questions

Architecture in Wandsworth - answered

Do I need planning permission for an extension in Wandsworth? +
It depends on the size of the extension and where your property sits. Under permitted development rules, you can usually build a rear extension up to 3 metres on an attached house or 4 metres on a detached one without a formal planning application. But Wandsworth has several conservation areas - including Wandsworth Common and St John's Hill - where permitted development rights are often restricted, and some streets have Article 4 directions that remove PD rights entirely. We check the planning position for every property before we start, so you know exactly where you stand from day one.
How much does a house extension cost in Wandsworth? +
Construction costs in Wandsworth typically range from £2,200 to £3,500 per square metre, depending on the specification and complexity. As a rough guide, a typical rear extension comes in at £70,000 to £150,000 including all finishes, while a loft conversion usually falls between £55,000 and £90,000. We provide a detailed cost estimate early in the design process so there are no surprises down the line.
What type of loft conversion works on Wandsworth terraces? +
Dormer loft conversions are by far the most common choice on Victorian terraces in Wandsworth. A rear dormer often falls under permitted development, which means no planning application is needed. If you need more space or want to raise the roof line, a mansard conversion is the next step up - though it does require planning permission. L-shaped dormers are also popular on wider terraces where you want to maximise the usable floor area.
What areas near Wandsworth does Rosace cover? +
We work right across South and South West London. Alongside Wandsworth, we regularly take on projects in Balham, Tooting, Putney, Battersea, Clapham, Earlsfield and Southfields. We also cover other parts of London and selected locations outside the capital.

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Planning a project in Wandsworth?

Tell us about your property and what you want to do with it. We offer a free initial consultation to talk through your brief and the planning position - no obligation.

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