From £22,072
Relax... you have found a reliable extension builder in CB1. D Stebbings is a friendly and reliable company based in CB1 who consider no job as too...
From £21,936
TSN Consultants Ltd are here to help customers who need an Extension Builder in CB1. We offer a competitive rate to complete all your extension bui...
From £22,344
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,376
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,224
SP-Building Services Ltd is an established and experienced local extension builder in CB1. Please contact us for a free, no obligation quote and co...
From £22,152
Relax... you have found a reliable extension builder in CB1. CROWNBUILD is a friendly and reliable company based in CB1 who consider no job as too ...
From £22,216
Trusted and professional extension builder in CB1. Experienced in all extension buildering work and keeping within budget and on quote. DEBRAY BUIL...
From £22,080
Coulson Building Group is a trusted extension builder serving customers in CB1 and the surrounding area. Contact us to today to get a competitive q...
From £22,408
Need to find an Extension Builder near you for all your extension buildering work?
Louise Swarbrick Design provides a local, trusted extens...
From £23,360
Experienced extension builder ready to quote for your work. ALLIED BUILDING ASSOCIATES LTD is the best extension builder in CB1. No obligation free...

A flat roof extension ranges from the cheapest of £21,936 (TSN Consultants Ltd based in CB1) to the dearest of £23,360 (ALLIED BUILDING ASSOCIATES LTD based in CB22), 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 CB1 by posting a job with HaMuch. We'll send it to extension builders in CB1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Cambridge | £33 | £234 |
| Build A Flat Roof Extension near South Cambridgeshire | £37 | £258 |
| Build A Flat Roof Extension near Haverhill | £32 | £228 |
| Build A Flat Roof Extension near Ely | £33 | £228 |
| Build A Flat Roof Extension near Huntingdon | £31 | £236 |
| Build A Flat Roof Extension near St Neots | £42 | £256 |
| Build A Flat Roof Extension near Biggleswade | £35 | £230 |
| Build A Flat Roof Extension near Bishop's Stortford | £36 | £229 |
| Build A Flat Roof Extension near East Hertfordshire | £37 | £241 |
| Build A Flat Roof Extension near Letchworth | £37 | £239 |
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 - £17,817

Two storey extension - £88,475

Build a timber frame extension - £26,317

Build a swimming pool - £81,317

Single storey extension - £61,336

Side return extension - £45,064

Install an RSJ - £2,517

Outbuilding - £10,317

Build a Mansard loft conversion - £52,317

Loft conversion - £36,720

Build a kitchen extension - £42,317

Hip to gable loft conversion - £42,317

Granny annexe - £87,317

Garden office - £10,317

Convert a Garage - £16,317

Garage - £18,817

Build a flat roof extension - £22,317

Build a dormer loft conversion - £42,317

Concrete foundations - £6,567

Convert a bungalow loft - £29,317

Convert a basement - £41,064