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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" - WD7, job posted 13/09/26
JJSR Construction Ltd
J Wijayamohan
JJSR Construction Ltd is an established and experienced local extension builder in North Watford. Please contact us for a free, no obligation quote...
"Loft conversion" - WD7, job posted 30/08/26
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...
"Loft conversion" - WD19, job posted 07/05/26
Sharp Building Ltd
Sharp Building Ltd is an established and experienced local extension builder in North Watford. Please contact us for a free, no obligation quote an...
"Looking for a loft conversion with a flat shed dormer (1 bed and bathroom) i have plans which have been submitted so looking for quotes" - WD24, job posted 26/12/25
Mario Prajar Building Services
Mario Prajar Building Services is an established and experienced local extension builder in North Watford. Please contact us for a free, no obligat...
"Loft conversion" - WD24, job posted 07/12/25
MAX CONSTRUCTION LTD
Need to find an Extension Builder near you for all your extension buildering work?
MAX CONSTRUCTION LTD provides a local, trusted extension...
"Side return extension" - WD18, job posted 09/10/25
RLC Construction
RLC Construction are here to help customers who need an Extension Builder in North Watford. We offer a competitive rate to complete all your extens...
"I am looking for quotes for a small rear extension on a terraced property in WD18, Watford. The extension will be built directly behind the existing kitchen and will house a toilet, stand-up shower, and a small hand basin. Existing Details: Existing Kitchen Width (internal): 2.01 metres ..." - WD18, job posted 07/08/25
C T Edwards
Relax... you have found a reliable extension builder in North Watford. C T Edwards is a friendly and reliable company based in North Watford who co...
"I am looking for quotes for a small rear extension on a terraced property in WD18, Watford. The extension will be built directly behind the existing kitchen and will house a toilet, stand-up shower, and a small hand basin. Existing Details: Property Type: Mid-terrace house Location: WD18,..." - WATFORD, job posted 07/08/25
Building Service and Support Ltd
Relax... you have found a reliable extension builder in North Watford. Building Service and Support Ltd is a friendly and reliable company based in...
"Single storey extension" - WATFORD, job posted 26/05/25
ALG Renovations
ALG Renovations is a well established, trustworthy, reliable and professional operation with over 17 years experience myself in the trade, base...
"Hip to gable loft conversion" - WD24, job posted 28/01/25
COMPLETE CIVIL ENGINEERING
Ciaran Feeney
Need to find an Extension Builder near you for all your extension buildering work?
COMPLETE CIVIL ENGINEERING provides a local, trusted ext...
"Loft conversion - (2 Rooms and a shower) Total Area - 40 square metres)" - WD19, job posted 29/12/24
Chrysalis
Chrysalis are here to help customers who need an Extension Builder in North Watford. We offer a competitive rate to complete all your extension bui...
"Loft conversion" - WD17, job posted 27/12/24
PERFORMA CONSTRUCTION LIMITED
Relax... you have found a reliable extension builder in North Watford. PERFORMA CONSTRUCTION LIMITED is a friendly and reliable company based in No...
"Two storey extension" - WATFORD, job posted 16/12/24
Volton Building & Paving
Volton Building & Paving is a trusted extension builder serving customers in North Watford and the surrounding area. Contact us to today to get a c...
"Side return extension" - WD17, job posted 05/03/24
One Call Bathrooms
At One Call Bathrooms we can tailor our service to provide a bespoke service to all Landlords and Management Agents that will guar...
IC Builders
IC Builders have been helping customers in St Albans and the surrounding area by providing professional, trustworthy building services.We k...
ARI Studio LTD
Need to find an Extension Builder near you for all your extension buildering work?
ARI Studio LTD provides a local, trusted extension build...
A.MILLS BUILDING SOLUTIONS LTD
Need an Extension Builder in North Watford? A.MILLS BUILDING SOLUTIONS LTD has been helping local clients (20 mile radius) with their extension bui...
EB Construction & Building Ltd
Edmond Begu
EB Construction & Building Ltd are here to help customers who need an Extension Builder in North Watford. We offer a competitive rate to complete a...
Mamma V's Caribbean and English Cuisine
UK Food
Need to find an Extension Builder near you for all your extension buildering work?
Mamma V's Caribbean and English Cuisine provides a local...
Compare North Watford extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Watford | £43 | £280 |
| Extension Builders near Bushey | £43 | £278 |
| Extension Builders near Rickmansworth | £43 | £282 |
| Extension Builders near Borehamwood | £42 | £271 |
| Extension Builders near St Albans | £43 | £272 |
| Extension Builders near Dacorum | £42 | £275 |
| Extension Builders near Harrow | £43 | £270 |
| Extension Builders near Hemel Hempstead | £43 | £276 |
| Extension Builders near Gerrards Cross | £43 | £283 |
| Extension Builders near Hillingdon | £43 | £276 |
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 - £26,200
Garden office - £10,200
Granny annexe - £87,200
Build a flat roof extension - £22,200
Convert a Garage - £16,200
Hip to gable loft conversion - £42,200
Convert a bungalow loft - £29,200
Build a dormer loft conversion - £42,200
Build a swimming pool - £81,200
Build a Mansard loft conversion - £52,200
Concrete foundations - £6,450
Underpin a building - £17,700
Two storey extension - £88,300
Convert a basement - £39,750
Side return extension - £43,750
Loft conversion - £35,625
Garage - £18,700
Single storey extension - £59,000
Outbuilding - £10,200
Install an RSJ - £2,400
Build a kitchen extension - £42,200
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