A garage conversion turns an integral or attached garage into a warm, habitable room by insulating the floor, walls and ceiling, replacing the garage door with a wall and window, and adding heating, lighting and finishes.
If you live in Bath and are weighing up a garage conversion, the starting point is a visit to measure up and talk through what you want, which costs nothing. We cover homes across BA1 and BA2, and a typical project of this kind in the South West lands somewhere in the £12,000–£28,500 bracket, including VAT. The exact figure depends on size, access and the finish you choose.
- Guide price
- £12,000–£28,500 inc VAT
- Time on site
- 2–6 weeks on site
- Postcodes
- BA1 and BA2
- Planning rules
- England
- Local area
- Bath and North East Somerset
- Survey
- Free, with a written quote
Garage conversions prices in Bath
Budgeting for a garage conversion in Bath? The numbers below include VAT and are adjusted for the South West, where costs are about 2% above the national guide. The headline range is £12,000–£28,500. Nothing is final until we have measured up at a free survey and agreed the specification with you.
| Type of job | What it usually involves | Guide in Bath |
|---|---|---|
| Integral single garage | A garage within the house footprint, with sound walls and a roof already in place. | £10,000–£18,500 |
| Attached single garage | A garage beside the house that may need roof, wall or floor upgrades. | £14,500–£25,500 |
| Double or detached garage | A larger or separate building, often with a shower room or kitchenette. | £22,500–£46,000 |
Your price depends mostly on:
- Garage type: integral, attached or detached
- Whether a shower room or kitchenette is included
- Heating method and ventilation for the new room
- Window and door choices and the level of finishes
What does the job include in Bath?
- Foundation checks under the door opening and footings where needed
- Insulated walls and ceiling built to building regulations
- New internal door or opening into the house
- Electrics, heating and ventilation by qualified trades, with certificates
- Plastering, skirting and decoration-ready finish
- Building control inspections and completion certificate
Local housing and a garage conversion
Somerset's building stone varies widely: Bath stone in Bath, golden Ham stone around Yeovil, blue lias in villages on the Levels and Mendip stone in the north. Weston-super-Mare has Victorian villas and terraces, Taunton and Bridgwater have brick terraces and post-war estates, and new housing continues to spread around the larger towns.
Stone properties often need lime pointing, stone repairs and windows that respect conservation areas, especially in Bath. Brick terraces suit loft rooms and extensions, and estate homes commonly take garage conversions.
That variety is why a guide price for a garage conversion in Bath is only a starting point; the survey shows what your particular property needs.
Planning and building rules in Bath
For anyone in Bath, the relevant framework is England's. The summary below is general, so we always contact the council about your address before putting a price in writing.
In England, converting an attached or integral garage into a room usually needs no planning permission, unless a planning condition on your estate has removed permitted development rights (common on newer houses). Changing the garage door to a wall and window is generally fine.
Building Regulations approval is needed: foundations for the infill wall, a damp-proof course, insulation, ventilation and fire safety.
Rules change and every property is different, so we check the planning history and constraints for your address before we quote.
From survey to handover
Free site survey
It starts with a survey at the property, free of charge. We check condition, access and services, ask how you want the finished result to look, and answer any questions you have about a garage conversion.
Your fixed price
Next you receive a written quote with a fixed price for the agreed specification. It lists what is included, what is not, and how payments are staged, so you can compare it properly.
Booking the work
Before anyone starts, we confirm the programme in writing, check whether consents are required and arrange deliveries. If a skip or scaffolding on the road needs a permit, we apply for it.
Build and hand over
During the work we protect the areas around it and tidy up at the end of each day. Once complete, we check the finish, remove our materials and hand over paperwork such as building control sign-off where it applies.
How we work
Questions about a garage conversion in Bath
How long does a garage conversion take?
A straightforward integral garage conversion usually takes two to four weeks on site. Attached garages that need roof or wall upgrades, and conversions with a shower room, typically take four to six weeks. Detached garages turned into annexes can take longer. Before work starts, allow time for drawings and building control approval. We give you a clear programme with your written quote.
Can you combine a garage conversion with other work?
Yes. Because we manage several trades under one contract, we can plan a garage conversion alongside other work on your Bath home, such as new windows with rendering, or a kitchen refit with an extension. Combining jobs can reduce repeat set-up such as scaffolding, skips and access, and every element is listed and priced in the same written quote.
Do I need planning permission in Bath?
It depends on the work, the size of the project, your property type and whether the building is listed or in a conservation area. Bath is in England, so England's rules apply. Many smaller jobs need no planning application, but some still need building control approval. We check what applies to your address before quoting.
Does the floor need raising?
Garage floors are usually lower than the house floor and slope towards the door for drainage. Most conversions raise the floor with a damp-proof membrane, insulation and either a screed or a timber floor, so it lines up with the house and removes the step. The final level depends on ceiling height and the door into the house. We measure both during the survey.
Can I keep some storage space?
Many people keep part of the garage for storage by building a dividing wall, leaving a smaller store at the front behind the existing door and converting the area behind into a room or utility. This keeps the look of the house unchanged and gives you somewhere for bikes and tools. The converted part still needs the same insulation, ventilation and fire separation.
Nearby towns
If your address falls within BA1 and BA2, we cover it. The same goes for neighbouring Keynsham, Trowbridge and Kingswood, which we include alongside Bath when arranging surveys and quotes.