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Select your affordable SM7 extension builder
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
P4 Services a building company in Banstead, Surrey pride itself on having high standards. If you are looking for a building company for a new kitch...
Banstead, SM7
Relax... you have found a reliable extension builder in SM7. NBNA Construction Ltd is a friendly and reliable company based in SM7 who consider no ...
Trusted and professional extension builder in SM7. Experienced in all extension buildering work and keeping within budget and on quote. PDL Propert...
Experienced extension builder ready to quote for your work. O G Electricals is the best extension builder in SM7. No obligation free quotes and man...
From £42,224
David Hunt
Relax... you have found a reliable extension builder in SM7. Cannon Gardens is a friendly and reliable company based in SM7 who consider no job as ...
From £41,880
Banstead, SM7
Experienced extension builder ready to quote for your work. ANM BUILDERS LTD is the best extension builder in SM7. No obligation free quotes and ma...
From £42,096
Relax... you have found a reliable extension builder in SM7. MSI is a friendly and reliable company based in SM7 who consider no job as too big or ...
From £42,080
Need to find an Extension Builder near you for all your extension buildering work?
Hunt Roofing Ltd provides a local, trusted extension bui...
From £42,320
G F Hobbs t/a G & N Builders is an established and experienced local extension builder in SM7. Please contact us for a free, no obligation quote an...

In SM7, prices for dormer loft conversions range from £41,880 (ANM BUILDERS LTD based in SM7) to £42,400 (O G Electricals based in CR5), 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 SM7. Post your job on HaMuch now and we'll put you in touch with available extension builders.
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 - £17,694

Two storey extension - £88,292

Build a timber frame extension - £26,194

Build a swimming pool - £81,194

Single storey extension - £58,888

Side return extension - £43,687

Install an RSJ - £2,394

Outbuilding - £10,194

Build a Mansard loft conversion - £52,194

Loft conversion - £35,573

Build a kitchen extension - £42,194

Hip to gable loft conversion - £42,194

Granny annexe - £87,194

Garden office - £10,194

Convert a Garage - £16,194

Garage - £18,694

Build a flat roof extension - £22,194

Build a dormer loft conversion - £42,194

Concrete foundations - £6,444

Convert a bungalow loft - £29,194

Convert a basement - £39,687