From £41,370
We work closely with our Clients to provide the most suitable procurement route to suit each Client’s requirements and aspirations. We are experi...
From £43,530
We provide structural engineering design and construction service (D&B) Our dedicated, enthusiastic and highly qualified staff to find the appropri...
From £37,860
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £41,910
Cannon Build Solutions is a local family-run building firm whose strong reliable reputation has been well established in North-West London and Buck...
From £41,100
M &M GENERAL BUILDING is an established extension buildering business in GU1. We come highly recommended and provide competitive quotes for your wo...
From £50,280
Paramount Brickwork Limited is an established extension buildering business in GU1. We come highly recommended and provide competitive quotes for y...
From £42,720
Victorian Roofing & Property Maintenance is an established and experienced local extension builder in GU1. Please contact us for a free, no obligat...
From £41,100
Need an Extension Builder in GU1? P J HARDIMAN BUILDING CONTRACT has been helping local clients (20 mile radius) with their extension buildering jo...
From £39,300
Experienced extension builder ready to quote for your work. JD CONSTRUCTION is the best extension builder in GU1. No obligation free quotes and man...
From £42,270
Trusted and professional extension builder in GU1. Experienced in all extension buildering work and keeping within budget and on quote. Chinthurst ...

Comparing extension builders estimates for a Convert a basement 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 to convert a basement in GU1 by posting a job with HaMuch and we will send it to extension builders in GU1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Guildford | £53 | £298 |
| Convert A Basement near Woking | £43 | £277 |
| Convert A Basement near Ash Vale | £41 | £277 |
| Convert A Basement near Waverley | £68 | £313 |
| Convert A Basement near Aldershot | £41 | £275 |
| Convert A Basement near Great Bookham | £42 | £281 |
| Convert A Basement near New Haw | £43 | £273 |
| Convert A Basement near Farnborough | £41 | £273 |
| Convert A Basement near Camberley | £41 | £283 |
| Convert A Basement near Farnham | £41 | £276 |
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 - £17,913

Two storey extension - £88,619

Build a timber frame extension - £26,413

Build a swimming pool - £81,413

Single storey extension - £63,256

Side return extension - £46,144

Install an RSJ - £2,613

Outbuilding - £10,413

Build a Mansard loft conversion - £52,413

Loft conversion - £37,620

Build a kitchen extension - £42,413

Hip to gable loft conversion - £42,413

Granny annexe - £87,413

Garden office - £10,413

Convert a Garage - £16,413

Garage - £18,913

Build a flat roof extension - £22,413

Build a dormer loft conversion - £42,413

Concrete foundations - £6,663

Convert a bungalow loft - £29,413

Convert a basement - £42,144