Covering Hatfield
Hatfield sits 5 miles east of St Albans, with Welwyn Garden City 3 miles to the north and St Albans 5 miles to the west.
Homes in the East of England
Across the East of England, newer estates often have integral garages and room for rear extensions, while older towns have Victorian terraces and conservation areas that shape what can be built.
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.
- Planning check (some estates remove permitted development rights)
- 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 |
How is a garage conversion approved in Hatfield?
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 should I think about before starting?
- Some new-build estates have a planning condition keeping garages for parking.
- 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.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- 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.
Questions about a garage conversion in Hatfield
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.
Do you work in Hatfield?
Yes. Hatfield is within our coverage for garage conversions, along with nearby Welwyn Garden City and St Albans.
Other towns nearby
- Garage conversions in Welwyn Garden City
- Garage conversions in St Albans
- Garage conversions in Potters Bar
- Garage conversions in Hertford
Learn more about garage conversions, or see every project we cover in Hatfield.

