Covering Horley
Alongside Horley, we also cover Crawley, Redhill (5 miles to the north) and Reigate.
Homes in the South East
Housing across the South East mixes inter-war semis, post-war estates and older cottages in villages and market towns, so rear and side extensions, hip-to-gable lofts and garage conversions all come up regularly.
What do you get with 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
What will a garage conversion cost?
Typical ranges for garage conversions. Ground conditions, access and specification move the final figure, which we fix in writing before work starts.
| 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 Horley?
In England we deal with the council’s planning team for permission or a lawful development certificate, with building control (the council or a registered building control approver) for inspections, and with neighbours under the Party Wall etc. Act 1996 where it 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 change the price or programme?
- A bedroom needs an escape window or a protected route out.
- 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.
- 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.
What people ask before starting
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.
Who deals with the council for a project in Horley?
We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.
Garage conversions near Horley
- Garage conversions in Crawley
- Garage conversions in Redhill
- Garage conversions in Reigate
- Garage conversions in East Grinstead
Learn more about garage conversions, or see every project we cover in Horley.

