Garage conversions in Blackheath

Covering Blackheath

Our coverage around Blackheath (SE3) also includes Greenwich, Catford and Eltham.

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 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
Garage door removal and brick infill with window
Insulated floor, walls and ceiling

What will a garage conversion cost?

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 Blackheath

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. We check the original permission for your house.

What can change the price or programme?

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

From first call to completion

Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.

Garage conversions: common questions

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.

Can a garage become a bedroom?

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

Can you visit a house in Blackheath 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.

Also covering

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