From £10,504
CityGate Homes specialises in full refurbishment projects and interior design services. We offer fully integrated services spanning the entire scop...
From £10,408
The firm’s design portfolio is very diverse ranging from residential, commercial, educational and many other types of developments. NArch has bee...
From £10,376
CK Constructions & Development Ltd is a trusted extension builder serving customers in St Pancras and the surrounding area. Contact us to today to ...
From £10,400
FLAVIA CONDE is an established and experienced local extension builder in St Pancras. Please contact us for a free, no obligation quote and competi...
From £10,184
Need to find an Extension Builder near you for all your extension buildering work?
Pacho Build Ltd provides a local, trusted extension buil...
From £10,472
Longland Construction LTD is a high end refurbishment contractor and sub contractor company in London and surrounding areas. Woodwork, painting and...
From £9,944
Relax... you have found a reliable extension builder in St Pancras. Otto & Mensah Build is a friendly and reliable company based in St Pancras who ...
From £10,216
Buildwiser is a trusted extension builder serving customers in St Pancras and the surrounding area. Contact us to today to get a competitive quote ...
From £10,296
Need an Extension Builder in St Pancras? DeHome Studio has been helping local clients (5 mile radius) with their extension buildering jobs for many...
From £10,368
Atlant Construction is an established extension buildering business in St Pancras. We come highly recommended and provide competitive quotes for yo...

Garden offices range from the cheapest of £9,944 (Otto & Mensah Build based in WC1N) to the dearest of £10,504 (Citygate based in WC1H), 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 St Pancras by posting a job with HaMuch. We'll send it to extension builders in St Pancras.
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 - £17,817

Two storey extension - £88,475

Build a timber frame extension - £26,317

Build a swimming pool - £81,317

Single storey extension - £61,336

Side return extension - £45,064

Install an RSJ - £2,517

Outbuilding - £10,317

Build a Mansard loft conversion - £52,317

Loft conversion - £36,720

Build a kitchen extension - £42,317

Hip to gable loft conversion - £42,317

Granny annexe - £87,317

Garden office - £10,317

Convert a Garage - £16,317

Garage - £18,817

Build a flat roof extension - £22,317

Build a dormer loft conversion - £42,317

Concrete foundations - £6,567

Convert a bungalow loft - £29,317

Convert a basement - £41,064