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J Wijayamohan
JJSR Construction Ltd is an established and experienced local extension builder in Rickmansworth. Please contact us for a free, no obligation quote...
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 is an established and experienced local extension builder in Rickmansworth. Please contact us for a free, no obligation quote an...
Mario Prajar Building Services is an established and experienced local extension builder in Rickmansworth. Please contact us for a free, no obligat...
Need to find an Extension Builder near you for all your extension buildering work?
MAX CONSTRUCTION LTD provides a local, trusted extension...
RLC Construction are here to help customers who need an Extension Builder in Rickmansworth. We offer a competitive rate to complete all your extens...
Relax... you have found a reliable extension builder in Rickmansworth. C T Edwards is a friendly and reliable company based in Rickmansworth who co...
Relax... you have found a reliable extension builder in Rickmansworth. Building Service and Support Ltd is a friendly and reliable company based in...
ALG Renovations is a well established, trustworthy, reliable and professional operation with over 17 years experience myself in the trade, base...
Chrysalis are here to help customers who need an Extension Builder in Rickmansworth. We offer a competitive rate to complete all your extension bui...

A flat roof extension ranges from the cheapest of £21,880 (MAX CONSTRUCTION LTD based in HA4) to the dearest of £22,464 (AV Home Improvements based in WD19), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in Rickmansworth by posting a job with HaMuch. We'll send it to extension builders in Rickmansworth.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Rickmansworth | £43 | £282 |
| Build A Flat Roof Extension near Watford | £43 | £280 |
| Build A Flat Roof Extension near Gerrards Cross | £43 | £283 |
| Build A Flat Roof Extension near Bushey | £43 | £278 |
| Build A Flat Roof Extension near Hillingdon | £43 | £276 |
| Build A Flat Roof Extension near Dacorum | £42 | £275 |
| Build A Flat Roof Extension near Chesham | £42 | £277 |
| Build A Flat Roof Extension near Hemel Hempstead | £43 | £276 |
| Build A Flat Roof Extension near Harrow | £43 | £270 |
| Build A Flat Roof Extension near Borehamwood | £42 | £271 |
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 - £17,678

Two storey extension - £88,268

Build a timber frame extension - £26,178

Build a swimming pool - £81,178

Single storey extension - £58,568

Side return extension - £43,507

Install an RSJ - £2,378

Outbuilding - £10,178

Build a Mansard loft conversion - £52,178

Loft conversion - £35,423

Build a kitchen extension - £42,178

Hip to gable loft conversion - £42,178

Granny annexe - £87,178

Garden office - £10,178

Convert a Garage - £16,178

Garage - £18,678

Build a flat roof extension - £22,178

Build a dormer loft conversion - £42,178

Concrete foundations - £6,428

Convert a bungalow loft - £29,178

Convert a basement - £39,507