From £41,460
Greater London, BR3
Placebell are here to help customers who need an Extension Builder in BR3. We offer a competitive rate to complete all your extension buildering jo...
From £35,520
Livo builders is a trusted extension builder serving customers in BR3 and the surrounding area. Contact us to today to get a competitive quote for...
From £37,770
Greater London, BR3
Relax... you have found a reliable extension builder in BR3. Ressi is a friendly and reliable company based in BR3 who consider no job as too big o...
From £36,960
Need an Extension Builder in BR3? Hatfield-Marcus has been helping local clients (10 mile radius) with their extension buildering jobs for many yea...
From £40,920
Kent, BR3
HouseForce is a privately owned specialist decorating and property refurbishment business. Offering a wide variety of services from local painting...
From £37,410
Cre8tive Contractors Ltd are here to help customers who need an Extension Builder in BR3. We offer a competitive rate to complete all your extensio...
From £42,180
Beckenham, BR3
CROMARTY CONSTRUCTION is a trusted extension builder serving customers in BR3 and the surrounding area. Contact us to today to get a competitive qu...
From £36,330
Speargold Ltd is a trusted extension builder serving customers in BR3 and the surrounding area. Contact us to today to get a competitive quote for ...
From £41,370
Kent, BR3
Relax... you have found a reliable extension builder in BR3. Glenn Miller Builders Limited is a friendly and reliable company based in BR3 who cons...
From £40,830
Experienced extension builder ready to quote for your work. Aviemore Building Contractors Ltd is the best extension builder in BR3. No obligation f...

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 BR3 by posting a job with HaMuch and we will send it to extension builders in BR3.
"Basement conversion" - BECKENHAM, job posted 01/01/70
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 - £17,640

Two storey extension - £88,210

Build a timber frame extension - £26,140

Build a swimming pool - £81,140

Single storey extension - £57,800

Side return extension - £43,075

Install an RSJ - £2,340

Outbuilding - £10,140

Build a Mansard loft conversion - £52,140

Loft conversion - £35,063

Build a kitchen extension - £42,140

Hip to gable loft conversion - £42,140

Granny annexe - £87,140

Garden office - £10,140

Convert a Garage - £16,140

Garage - £18,640

Build a flat roof extension - £22,140

Build a dormer loft conversion - £42,140

Concrete foundations - £6,390

Convert a bungalow loft - £29,140

Convert a basement - £39,075