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Mandala Building Services
Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...
"Loft conversion(dormer) with bedroom and en-suite bathroom on a bungalow and a rear single storey 5x4 flat roof extension" - AL2, job posted 09/10/26
JJSR Construction Ltd
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...
"Loft conversion" - WD7, job posted 13/09/26
Oterg Building Contractors
Relax... you have found a reliable extension builder in Borehamwood. Oterg Building Contractors is a friendly and reliable company based in Boreham...
"Loft conversion" - WD7, job posted 30/08/26
BKB Building Contractors
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion quote" - EN5, job posted 20/06/26
L H Builders
Relax... you have found a reliable extension builder in Borehamwood. L H Builders is a friendly and reliable company based in Borehamwood who consi...
"Loft conversion" - EN5, job posted 20/06/26
Fitz Building Services Limited
Need to find an Extension Builder near you for all your extension buildering work?
Fitz Building Services Limited provides a local, trusted...
"Loft conversion" - WD19, job posted 07/05/26
EDGWARE BUILDER
EDGWARE BUILDER are here to help customers who need an Extension Builder in Borehamwood. We offer a competitive rate to complete all your extension...
"Dormer loft conversion" - HA8, job posted 06/03/26
HARLEY BUILDING SERVICES LTD
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...
"Granny annexe" - COLINDALE, job posted 12/07/25
D Bradshaw Building Renovation
D Bradshaw Building Renovation is a trusted extension builder serving customers in Borehamwood and the surrounding area. Contact us to today to get...
"Single storey extension" - BOREHAMWOOD, job posted 05/07/25
Samuele Paolini
Samuele Paolini
Need an Extension Builder in Borehamwood? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for ...
"Two storey extension" - HA7, job posted 13/01/25
A&J BUILDERS & DECORATORS LTD
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Outbuilding and plans" - EN6, job posted 16/12/24
BELLVIEW BUILDERS LTD
Need to find an Extension Builder near you for all your extension buildering work?
BELLVIEW BUILDERS LTD provides a local, trusted extensio...
"Single storey extension" - COLINDALE, job posted 19/02/24
SJ Expert Building Services
SJ Expert Building Services are here to help customers who need an Extension Builder in Borehamwood. We offer a competitive rate to complete all yo...
Rafix Building
Rafal Szczepanski
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...
AV Home Improvements
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
Sharp Building Ltd
Sharp Building Ltd is an established and experienced local extension builder in Borehamwood. Please contact us for a free, no obligation quote and ...
Mario Prajar Building Services
Mario Prajar Building Services is an established and experienced local extension builder in Borehamwood. Please contact us for a free, no obligatio...
RLC Construction
RLC Construction are here to help customers who need an Extension Builder in Borehamwood. We offer a competitive rate to complete all your extensio...
Building Service and Support Ltd
Relax... you have found a reliable extension builder in Borehamwood. Building Service and Support Ltd is a friendly and reliable company based in B...
J K GENERAL BUILDING LTD
Need to find an Extension Builder near you for all your extension buildering work?
J K GENERAL BUILDING LTD provides a local, trusted exten...
Compare Borehamwood extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Borehamwood | £42 | £271 |
| Extension Builders near High Barnet | £43 | £272 |
| Extension Builders near Bushey | £43 | £278 |
| Extension Builders near Potters Bar | £43 | £273 |
| Extension Builders near Brent Cross | £43 | £273 |
| Extension Builders near Watford | £43 | £280 |
| Extension Builders near Harrow | £43 | £270 |
| Extension Builders near Muswell Hill | £44 | £273 |
| Extension Builders near St Albans | £43 | £272 |
| Extension Builders near Hatfield | £42 | £266 |
Job estimates from extension builders near you
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.
Build a timber frame extension - £26,192
Garden office - £10,192
Granny annexe - £87,192
Build a flat roof extension - £22,192
Convert a Garage - £16,192
Hip to gable loft conversion - £42,192
Convert a bungalow loft - £29,192
Build a dormer loft conversion - £42,192
Build a swimming pool - £81,192
Build a Mansard loft conversion - £52,192
Concrete foundations - £6,442
Underpin a building - £17,692
Two storey extension - £88,288
Convert a basement - £39,660
Side return extension - £43,660
Loft conversion - £35,550
Garage - £18,692
Single storey extension - £58,840
Outbuilding - £10,192
Install an RSJ - £2,392
Build a kitchen extension - £42,192
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