Building work in Sutton: area guide

Sutton Council is the planning and building control authority for Sutton, which covers SM1, SM2, SM3, SM5 and SM6 and takes in Carshalton and Wallington. This is our area guide to building work in the borough; for whole-house refurbishment go to Home renovation in Sutton.

Sutton's housing, as the Council Tax list records it, is about 86,280 homes: 61% houses, 39% flats, with 13% pre-1919, 41% interwar and 46% built since 1945. VOA Council Tax stock of properties, March 2025, for all 24 statistical areas in Sutton. Counts rounded by the VOA.

Planning and building control in Sutton

What Sutton Council publishes about building work in the borough, with each point linked to the council page it comes from:

• Sutton's adopted Local Plan records 15 nationally recognised Conservation Areas in the borough. sutton.gov.uk
• Sutton's Article 4 Direction on houses in multiple occupation was made on 22 February 2024 and confirmed by the Housing, Economy and Business Committee on 26 November 2024. sutton.gov.uk
• Sutton's Article 4 Direction removing the permitted change from a dwellinghouse to a house in multiple occupation covers the whole borough and came into force on 22 February 2025. sutton.gov.uk
• Sutton's adopted Local Plan records 176 nationally recognised Listed Buildings in the borough. sutton.gov.uk
• Sutton warns that permitted development may not be available for properties in a conservation area, listed buildings or areas under an Article 4 direction. sutton.gov.uk
• The London Borough of Sutton runs its own building control team, which checks that building work to a home meets health and safety, energy and accessibility standards. sutton.gov.uk
• Sutton offers both a full plans application and a building notice, and the application cost is the same whichever route you choose. sutton.gov.uk
• In Sutton a building notice is only for works to domestic dwellings, such as smaller extensions, garage conversions, replacement windows or removal of a wall. sutton.gov.uk

61% of Sutton's homes are houses, which keep householder permitted development: a single-storey rear extension within the size limits can usually go ahead without an application, in a conservation area too unless an Article 4 direction removes it. The 39% that are flats have no householder permitted development, so their extensions and most external changes need planning permission from Sutton Council. Taking out a wall or a chimney breast is building regulations work, not planning, unless the building is listed.

Sutton is a settled, largely suburban borough covering SM1, SM2, SM3, SM5 and SM6, with Carshalton, Cheam, Wallington and Sutton itself made up mainly of interwar, post-war and Edwardian family housing on quiet streets. People stay here a long time, and that decides the job. Much of our work improves a house someone intends to live in for another twenty years, not one being prepared for sale, so it is often one room done properly.

Improving a house you are staying in starts with the room

That brief sorts into jobs. A downstairs shower room or cloakroom where the only bath was upstairs, or a level access shower replacing a bath, is bathroom renovation, decided by the drainage fall. Wider door openings through a wall are structural alterations. A kitchen reworked so it is usable without reaching across the room is kitchen renovation. None is dramatic, but all of it changes daily life.

The other half is the occupied home. We phase the job so each room stays usable as long as possible, seal the active area against dust, agree the noisy stages in advance and leave the house secure and clean each evening. On a driveway property the skip and materials stay off the street entirely, which helps a great deal.

Local designations and ground variation shape a Sutton extension

Sutton Council has designated conservation areas including parts of Carshalton and Cheam, where older cottages and period buildings survive around the ponds and the village centres. Inside them side extensions, two-storey rear additions and roof alterations need planning permission and materials face closer planning scrutiny, so the designation is the first thing to establish before a house extension design.

Ground conditions are not uniform either, varying with the underlying geology as you move south towards the downs. The structural engineer sets foundation depth from the site, not a rule of thumb, and building control inspects the open excavation before concrete goes in. We build to whatever that design requires.

Popular starting points in Sutton: kitchen renovation in Sutton, house extensions across Sutton, builders in London and Building Regulations Explained.