From £10,096
Greater London, SE6
Whether you are looking to build, extend or upgrade we will help. From building to decorating. Our professional team have the skills and experie...
From £10,024
Jeremy Weston, trading as GreenGauge has over 10 years experience working as a Heating Engineer. Fully Insured and Gas Safe Registered.Base...
From £10,152
Catford, SE6
Relax... you have found a reliable extension builder in SE6. S G Painting Contractor Ltd is a friendly and reliable company based in SE6 who consid...
From £10,152
We provide our clients with excellent service and quality. Whether you are looking to extend or upgrade, our professional team has the skills and e...
From £10,248
London, SE6
Baseline Build and Renovate Ltd is an established extension buildering business in SE6. We come highly recommended and provide competitive quotes f...
From £10,312
Construction Surety is an established extension buildering business in SE6. We come highly recommended and provide competitive quotes for your work...
From £10,456
MPN Engineering LTD are here to help customers who need an Extension Builder in SE6. We offer a competitive rate to complete all your extension bui...
From £10,072
Trusted and professional extension builder in SE6. Experienced in all extension buildering work and keeping within budget and on quote. Carai Ltd h...
From £10,312
Pure Building & Maintenance is a family run business with over 35 years' experience. Comprising a team of dedicated professionals who all have the...
From £10,200
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Garden offices range from the cheapest of £10,024 (GreenGauge Heating Limited based in SE6) to the dearest of £10,456 (MPN Engineering LTD based in BR1), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in SE6 by posting a job with HaMuch. We'll send it to extension builders in SE6.
| Borough in London |
|---|
| Garden Office in Catford |
| Garden Office in Lewisham |
| Garden Office in Forest Hill |
| Garden Office in Grove Park |
| Garden Office in Brockley |
| Garden Office in Sydenham |
| Garden Office in Bromley |
| Garden Office in Beckenham |
| Garden Office in Penge |
| Garden Office in Blackheath |
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 - £17,702

Two storey extension - £88,304

Build a timber frame extension - £26,202

Build a swimming pool - £81,202

Single storey extension - £59,048

Side return extension - £43,777

Install an RSJ - £2,402

Outbuilding - £10,202

Build a Mansard loft conversion - £52,202

Loft conversion - £35,648

Build a kitchen extension - £42,202

Hip to gable loft conversion - £42,202

Granny annexe - £87,202

Garden office - £10,202

Convert a Garage - £16,202

Garage - £18,702

Build a flat roof extension - £22,202

Build a dormer loft conversion - £42,202

Concrete foundations - £6,452

Convert a bungalow loft - £29,202

Convert a basement - £39,777