From £22,280
Member since August 2026
Relax... you have found a reliable extension builder in Calcot Row. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Calco...
From £22,296
Pinnacle Property Services is a trusted extension builder serving customers in Calcot Row and the surrounding area. Contact us to today to get a co...
From £22,336
Aerea is a trusted extension builder serving customers in Calcot Row and the surrounding area. Contact us to today to get a competitive quote for e...
From £22,152
Experienced extension builder ready to quote for your work. ADW Roofing Services is the best extension builder in Calcot Row. No obligation free qu...
From £21,928
Holt Builders Ltd are here to help customers who need an Extension Builder in Calcot Row. We offer a competitive rate to complete all your extensio...
From £22,384
M B Building & Construction Ltd is a trusted extension builder serving customers in Calcot Row and the surrounding area. Contact us to today to get...
From £22,064
Need to find an Extension Builder near you for all your extension buildering work?
MPE Brickwork provides a local, trusted extension builde...
From £22,224
Ayling & Sons Roofing Ltd is an established and experienced local extension builder in Calcot Row. Please contact us for a free, no obligation quot...
From £22,400
The Roof Doctor is an established and experienced local extension builder in Calcot Row. Please contact us for a free, no obligation quote and comp...

A flat roof extension ranges from the cheapest of £21,928 (Holt Builders Ltd based in GU12) to the dearest of £22,400 (WINDOW WIZE based in Gu47), 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 Calcot Row by posting a job with HaMuch. We'll send it to extension builders in Calcot Row.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Reading | £42 | £266 |
| Build A Flat Roof Extension near Caversham | £38 | £265 |
| Build A Flat Roof Extension near Woodley | £42 | £266 |
| Build A Flat Roof Extension near Wokingham | £41 | £280 |
| Build A Flat Roof Extension near Thatcham | £38 | £266 |
| Build A Flat Roof Extension near Basingstoke & Deane | £39 | £273 |
| Build A Flat Roof Extension near South Oxfordshire | £36 | £253 |
| Build A Flat Roof Extension near Bracknell Forest | £41 | £287 |
| Build A Flat Roof Extension near Newbury | £37 | £262 |
| Build A Flat Roof Extension near Bracknell | £41 | £286 |
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 - £17,746

Two storey extension - £88,370

Build a timber frame extension - £26,246

Build a swimming pool - £81,246

Single storey extension - £59,928

Side return extension - £44,272

Install an RSJ - £2,446

Outbuilding - £10,246

Build a Mansard loft conversion - £52,246

Loft conversion - £36,060

Build a kitchen extension - £42,246

Hip to gable loft conversion - £42,246

Granny annexe - £87,246

Garden office - £10,246

Convert a Garage - £16,246

Garage - £18,746

Build a flat roof extension - £22,246

Build a dormer loft conversion - £42,246

Concrete foundations - £6,496

Convert a bungalow loft - £29,246

Convert a basement - £40,272