Garage conversions in Southampton

Covering Southampton

Alongside Southampton, we also cover Totton (4 miles to the west), Eastleigh and Fareham.

Homes in the South East

Many South East homes are inter-war or post-war semis and detached houses with room for rear and side extensions, while historic town centres and villages bring conservation area and listed building controls.

What does a garage conversion involve?

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?

Guide prices for garage conversions, including VAT where it applies. Your fixed price is confirmed in writing after the survey.

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 Southampton?

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. We check the original permission for your house.

What should I think about before starting?

Some new-build estates have a planning condition keeping garages for parking.
A bedroom needs an escape window or a protected route out.

How does the project run?

Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
Construction and completion. One site lead co-ordinates every trade through to the building control certificate.

Questions about a garage conversion in Southampton

How much does a garage conversion cost?

A single integral garage usually costs about £12,000 to £17,000 including VAT. Detached and double garages cost more.

Can a garage become a bedroom?

Yes, with insulation, ventilation and an escape window or protected route out.

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

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

Garage conversions near Southampton

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