Garage conversions in Carshalton

Covering Carshalton

Carshalton is about 10 miles south of London. We also cover Sutton (2 miles to the south-west), Mitcham and Morden.

Homes in London

Terraced houses dominate many London neighbourhoods, so most projects involve shared walls, narrow access and a party wall process. Conservation areas are widespread, and some boroughs have their own mansard and basement guidance.

What is included in a garage conversion in Carshalton?

A garage conversion turns an attached, integral or detached garage into a habitable room by infilling the door opening, insulating the floor, walls and roof, and adding windows, heating and power. It is one of the quickest and cheapest ways to add a room.

Planning check (some estates remove permitted development rights)
Garage door removal and brick infill with window
Plastering, skirting and decoration-ready finish

How much should I budget for a garage conversion?

Use these ranges to budget for garage conversions; the survey turns them into a fixed price for the agreed specification.

Garage conversions	Guide price incl. VAT
Single integral garage	£12,000 to £17,000
Single attached garage	£12,000 to £24,000
Single detached garage	£18,000 to £30,000
Double garage	£25,000 to £54,000

Do you need permission for a garage conversion in Carshalton?

Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.

An internal garage conversion is usually permitted development in England unless the house is listed, an Article 4 direction applies, or it is on an estate where the planning permission removed permitted development rights.

What can affect a garage conversion?

Some new-build estates have a planning condition keeping garages for parking.
Losing a parking space can matter on streets with permit parking.

What happens after I enquire?

Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.

Questions about a garage conversion in Carshalton

Do I need planning permission for a garage conversion?

Usually not if the work is internal and your permitted development rights are intact. Some estates remove those rights, so we check.

Does it need building regulations approval?

Yes, because it becomes a habitable room.

How do I get a price for garage conversions in Carshalton?

Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.

Also covering

Learn more about garage conversions, or see every project we cover in Carshalton.