Comparing extension builders estimates for Loft conversion gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost of a loft conversion in GL13 by posting your job to extension builders in GL13.
"Loft conversion for dormer bedroom and bathroom" - GL15, job posted 02/10/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Loft Conversion near Yate | £34 | £263 |
| Loft Conversion near Stroud | £33 | £249 |
| Loft Conversion near Bradley Stoke | £34 | £259 |
| Loft Conversion near South Gloucestershire | £34 | £260 |
| Loft Conversion near Quedgeley | £32 | £247 |
| Loft Conversion near Gloucester | £31 | £236 |
| Loft Conversion near Kingswood | £34 | £257 |
| Loft Conversion near Bristol | £33 | £255 |
| Loft Conversion near Clifton | £33 | £255 |
| 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 - £15,500
Two storey extension - £85,000
Build a timber frame extension - £24,000
Build a swimming pool - £79,000
Single storey extension - £15,000
Side return extension - £19,000
Install an RSJ - £200
Outbuilding - £8,000
Build a Mansard loft conversion - £50,000
Loft conversion - £15,000
Build a kitchen extension - £40,000
Hip to gable loft conversion - £40,000
Granny annexe - £85,000
Garden office - £8,000
Convert a Garage - £14,000
Garage - £16,500
Build a flat roof extension - £20,000
Build a dormer loft conversion - £40,000
Concrete foundations - £4,250
Convert a bungalow loft - £27,000
Convert a basement - £15,000