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Wandsworth · South West LondonLoft conversions and extensions in Wandsworth
We design and build loft conversions, extensions and renovations across Wandsworth, from the terraces of Wandsworth Town to the Victorian and Edwardian houses around Wandsworth Common.

A recent Buildspace Projects build.
Homes in Wandsworth and what suits them
Wandsworth Council describes the Wandsworth Common area as two to three-storey terraces and semi-detached houses of Victorian and Edwardian origin, including the streets known as the Toast Rack. These houses suit L-shaped and rear dormer lofts, mansards and side-return or wraparound extensions.
Planning in Wandsworth
- Wandsworth Council handles planning for Wandsworth Town and Wandsworth Common.
- Conservation areas include Wandsworth Town, Old York Road and Wandsworth Common.
- Wandsworth Common is one of eight Wandsworth conservation areas with an Article 4 direction limiting some exterior works to houses. Directions can cover only part of an area, so we check your exact address.
- Outside conservation areas, many rear dormers and single-storey rear extensions can be built under permitted development.
How we work in Wandsworth
Our in-house team does the measured survey, drawings and the planning or permitted-development application through Plan It, then manages the build with a single project lead. Party wall agreements are handled through our partner surveyors. Typical build times: rear dormer 10–12 weeks, L-shaped dormer 12–14 weeks, mansard 12–16 weeks, rear extension 12–16 weeks.
Start your project
Need drawings and planning first, or ready to price the build? Choose your route, or call 0203 488 6500.
Wandsworth: questions homeowners ask
Do I need planning permission for a loft conversion in Wandsworth?
Outside conservation areas, many rear dormers are permitted development. Around Wandsworth Common, Wandsworth Town and Old York Road you need planning permission, and parts of Wandsworth Common also have an Article 4 direction.
Which council handles planning in Wandsworth?
Wandsworth Council.
How long does a loft conversion or extension take in Wandsworth?
Most of our lofts take 10–16 weeks on site and most rear extensions 12–16 weeks, depending on the design. If you need planning permission, allow around 8 weeks for the council's decision on a householder application, plus time to prepare the drawings.
Can you design it as well as build it?
Yes. Our Plan It service covers the measured survey, drawings and the planning or permitted-development application. You can stop there, or carry straight on to the build with the same team.
