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Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...
J Wijayamohan
JJSR Construction Ltd is an established and experienced local extension builder in Borehamwood. Please contact us for a free, no obligation quote a...
Relax... you have found a reliable extension builder in Borehamwood. Oterg Building Contractors is a friendly and reliable company based in Boreham...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Relax... you have found a reliable extension builder in Borehamwood. L H Builders is a friendly and reliable company based in Borehamwood who consi...
Need to find an Extension Builder near you for all your extension buildering work?
Fitz Building Services Limited provides a local, trusted...
EDGWARE BUILDER are here to help customers who need an Extension Builder in Borehamwood. We offer a competitive rate to complete all your extension...
HARLEY BUILDING SERVICES LTD are here to help customers who need an Extension Builder in Borehamwood. We offer a competitive rate to complete all y...
D Bradshaw Building Renovation is a trusted extension builder serving customers in Borehamwood and the surrounding area. Contact us to today to get...
Samuele Paolini
Need an Extension Builder in Borehamwood? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for ...

Garden offices range from the cheapest of £9,960 (HARLEY BUILDING SERVICES LTD based in NW9) to the dearest of £10,512 (Mandala Building Services based in WD6), 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 Borehamwood by posting a job with HaMuch. We'll send it to extension builders in Borehamwood.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Borehamwood | £42 | £271 |
| Garden Office near High Barnet | £43 | £272 |
| Garden Office near Bushey | £43 | £278 |
| Garden Office near Potters Bar | £43 | £273 |
| Garden Office near Brent Cross | £43 | £273 |
| Garden Office near Watford | £43 | £280 |
| Garden Office near Harrow | £43 | £270 |
| Garden Office near Muswell Hill | £44 | £273 |
| Garden Office near St Albans | £43 | £272 |
| Garden Office near Hatfield | £42 | £266 |
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 - £17,705

Two storey extension - £88,307

Build a timber frame extension - £26,205

Build a swimming pool - £81,205

Single storey extension - £59,096

Side return extension - £43,804

Install an RSJ - £2,405

Outbuilding - £10,205

Build a Mansard loft conversion - £52,205

Loft conversion - £35,670

Build a kitchen extension - £42,205

Hip to gable loft conversion - £42,205

Granny annexe - £87,205

Garden office - £10,205

Convert a Garage - £16,205

Garage - £18,705

Build a flat roof extension - £22,205

Build a dormer loft conversion - £42,205

Concrete foundations - £6,455

Convert a bungalow loft - £29,205

Convert a basement - £39,804