Garage conversions in Oxfordshire

Covering Oxfordshire

We cover Oxfordshire, including Oxford, Banbury, Abingdon and Bicester, and the towns around them.

Homes in the South East

The South East has a lot of 1930s and post-war semi-detached housing, well suited to rear extensions and hip-to-gable loft conversions, alongside period properties in conservation areas that need a more careful design.

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.

Building control application
Heating, electrics and data points
Plastering, skirting and decoration-ready finish

How much does a garage conversion cost in Oxfordshire?

Indicative costs for garage conversions. London and the South East usually sit towards the top of each range.

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

Planning and building rules in Oxfordshire

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?

The garage floor is often lower than the house and needs raising.
Losing a parking space can matter on streets with permit parking.

What are the steps?

Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
Construction and completion. One site lead co-ordinates every trade through to the building control certificate.

Your questions answered

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.

Can you visit a house in Oxfordshire to quote?

Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.

Garage conversions in nearby towns

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