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Conversions

Garage conversions

Turn a garage into a bedroom, office, playroom or utility. Designed, approved and built by SK Residential, with a fixed price in writing for the agreed specification.

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What is a garage conversion?

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.

Integral garage converted to a room with a new window set in matching brickwork

Most integral garages already have the walls and roof; what they need is a new insulated floor, an infilled front wall with a window, and heating. We check whether your permitted development rights are intact, handle building control and finish the room ready to use.

Typical time on site
2 to 5 weeks
Guide price
£12,000 to £54,000
Building regulations
Required

What is included?

  • Planning check (some estates remove permitted development rights)
  • Building control application
  • Garage door removal and brick infill with window
  • Insulated floor, walls and ceiling
  • Heating, electrics and data points
  • Plastering, skirting and decoration-ready finish

How much does a garage conversion cost?

Most single integral garage conversions cost around £12,000 to £17,000 including VAT.

Garage conversionsGuide 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

Unit: per garage. Guide ranges only; your price is fixed in writing after the survey.

Use the guide price tool for a figure based on your size and specification, or see all guide prices.

Does a garage conversion need planning permission?

England

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.

Wales

In Wales, converting an attached garage usually does not need planning permission unless rights have been removed by condition or the building is listed.

Scotland

In Scotland, converting a garage may not need planning permission if the outside barely changes, but a building warrant is needed before work starts.

Northern Ireland

In Northern Ireland, garage conversions often do not need planning permission if the external changes are minor; building control approval is needed.

What about building regulations?

Building regulations approval is needed because the garage becomes a habitable room: insulation, ventilation, fire safety, damp-proofing and an escape window if it is a bedroom.

What should I think about before starting?

  • Some new-build estates have a planning condition keeping garages for parking.
  • The garage floor is often lower than the house and needs raising.
  • A bedroom needs an escape window or a protected route out.
  • Losing a parking space can matter on streets with permit parking.

How does the project run?

  1. Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
  2. Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
  3. Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
  4. Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.

Questions about garage conversions

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.

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.

How long does a garage conversion take?

About 2 to 5 weeks on site.

Does it need building regulations approval?

Yes, because it becomes a habitable room.

Can a garage become a bedroom?

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

Related projects

Guides

Where do we build garage conversions?

We take on garage conversions across England, Wales, mainland Scotland and Northern Ireland. Choose your area:

Planning an extension, loft or new home?

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