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Select your affordable N12 extension builder
Need the extension buildering job done quickly without breaking the bank? WT Construction Service Ltd offer fast, reliable, and affordable extensio...
Relax... you have found a reliable extension builder in N12. Pavillion Building Services is a friendly and reliable company based in N12 who consid...
Ivaylo Shkodrov
Extremely reliable service . Flexibility, correct, listening customer. Wide experience.
Relax... you have found a reliable extension builder in N12. Taylor Construction Services Ltd is a friendly and reliable company based in N12 who c...
Need to find an Extension Builder near you for all your extension buildering work?
Raf's Building Service provides a local, trusted extensi...
Trusted and professional extension builder in N12. Experienced in all extension buildering work and keeping within budget and on quote. DS Construc...
Need an Extension Builder in N12? Odp Builders has been helping local clients (5 mile radius) with their extension buildering jobs for many years. ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Trusted and professional extension builder in N12. Experienced in all extension buildering work and keeping within budget and on quote. D.J Coyle &...

Builders charge between £17,820 (Onyx Iv based in N11) and £19,084 (Homeworks Design & Build Ltd based in N20) in N12 to build a garage, but these costs are only estimates.
Comparing extension builders estimates for building a garage gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get real quotes to build a new garage in N12 by posting a job with HaMuch and we will send it to extension builders in N12.
| Borough in London |
|---|
| Garage in North Finchley |
| Garage in Whetstone |
| Garage in Finchley |
| Garage in Friern Barnet |
| Garage in Hampstead |
| Garage in Muswell Hill |
| Garage in Cockfosters |
| Garage in Southgate |
| Garage in High Barnet |
| Garage in Mill Hill |
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 - £17,676

Two storey extension - £88,264

Build a timber frame extension - £26,176

Build a swimming pool - £81,176

Single storey extension - £58,520

Side return extension - £43,480

Install an RSJ - £2,376

Outbuilding - £10,176

Build a Mansard loft conversion - £52,176

Loft conversion - £35,400

Build a kitchen extension - £42,176

Hip to gable loft conversion - £42,176

Granny annexe - £87,176

Garden office - £10,176

Convert a Garage - £16,176

Garage - £18,676

Build a flat roof extension - £22,176

Build a dormer loft conversion - £42,176

Concrete foundations - £6,426

Convert a bungalow loft - £29,176

Convert a basement - £39,480