From £42,104
Need an Extension Builder in BA3? RHayes Roofing has been helping local clients (20 mile radius) with their extension buildering jobs for many year...
From £42,200
Trusted and professional extension builder in BA3. Experienced in all extension buildering work and keeping within budget and on quote. CETH CONSTR...
From £41,872
Need an Extension Builder in BA3? Marptree Design & Build limited has been helping local clients (20 mile radius) with their extension buildering j...
From £41,976
K STOBBS BUILDING CONTRACTOR is an established extension buildering business in BA3. We come highly recommended and provide competitive quotes for ...
From £42,072
BURNELL BUILDERS LTD is an established extension buildering business in BA3. We come highly recommended and provide competitive quotes for your wor...
From £41,816
Experienced extension builder ready to quote for your work. J CROZIER (BUILDERS) LTD is the best extension builder in BA3. No obligation free quote...
From £41,928
Need an Extension Builder in BA3? Wattsfield Construction has been helping local clients (20 mile radius) with their extension buildering jobs for ...
From £42,928
We are a family run small business, we only use fully time served tradespeople. Having been building for 22years a still having a passion for quali...
From £41,968
Our building services company Wellsway Building Company was established in 2017. Since then we have been helping customers in Bath and the surround...

In BA3, prices for dormer loft conversions range from £41,816 (J CROZIER (BUILDERS) LTD based in BA2) to £42,928 (Unique Design & Build based in BS39), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for.
The best way to get an accurate price is to compare quotes from extension builders in BA3. Post your job on HaMuch now and we'll put you in touch with available extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Dormer Loft Conversion near Bath | £32 | £249 |
| Build A Dormer Loft Conversion near Frome | £33 | £263 |
| Build A Dormer Loft Conversion near Keynsham | £33 | £251 |
| Build A Dormer Loft Conversion near Trowbridge | £34 | £266 |
| Build A Dormer Loft Conversion near Kingswood | £34 | £257 |
| Build A Dormer Loft Conversion near Bristol | £33 | £255 |
| Build A Dormer Loft Conversion near Clifton | £33 | £255 |
| Build A Dormer Loft Conversion near North Somerset | £32 | £245 |
| Build A Dormer Loft Conversion near South Gloucestershire | £34 | £260 |
| Build A Dormer Loft Conversion near Chippenham | £34 | £258 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,616

Two storey extension - £88,174

Build a timber frame extension - £26,116

Build a swimming pool - £81,116

Single storey extension - £57,320

Side return extension - £42,805

Install an RSJ - £2,316

Outbuilding - £10,116

Build a Mansard loft conversion - £52,116

Loft conversion - £34,838

Build a kitchen extension - £42,116

Hip to gable loft conversion - £42,116

Granny annexe - £87,116

Garden office - £10,116

Convert a Garage - £16,116

Garage - £18,616

Build a flat roof extension - £22,116

Build a dormer loft conversion - £42,116

Concrete foundations - £6,366

Convert a bungalow loft - £29,116

Convert a basement - £38,805