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JASON SHARP SHARP BUILDERS is a trusted extension builder serving customers in Berkhamsted and the surrounding area. Contact us to today to get a c...
Edmond Begu
EB Construction & Building Ltd are here to help customers who need an Extension Builder in Berkhamsted. We offer a competitive rate to complete all...
Chris Warren Construction Ltd is an established extension buildering business in Berkhamsted. We come highly recommended and provide competitive qu...
STEPHEN PARKIN BUILDING CONTRA is an established extension buildering business in Berkhamsted. We come highly recommended and provide competitive q...
Dave Reilly
BOXMOOR BLDG & CARP SERVICES is a trusted extension builder serving customers in Berkhamsted and the surrounding area. Contact us to today to get a...
BARRETT LESLIE BUILDING are here to help customers who need an Extension Builder in Berkhamsted. We offer a competitive rate to complete all your e...
Berkhamsted, HP4
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Simon Johnson
Simon Johnson & Sons Builders are here to help customers who need an Extension Builder in Berkhamsted. We offer a competitive rate to complete all ...
We are a family run business that has been trading since 1976 in Tring, Berkhamsted and surrounding areas.
Relax... you have found a reliable extension builder in Berkhamsted. GURNEY CONSTRUCTION is a friendly and reliable company based in Berkhamsted wh...

A flat roof extension ranges from the cheapest of £21,896 (Simon Johnson & Sons Builders based in HP2) to the dearest of £22,416 (GURNEY CONSTRUCTION based in HP5), 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 Berkhamsted by posting a job with HaMuch. We'll send it to extension builders in Berkhamsted.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Berkhamsted | £41 | £273 |
| Build A Flat Roof Extension near Dacorum | £42 | £275 |
| Build A Flat Roof Extension near Hemel Hempstead | £43 | £276 |
| Build A Flat Roof Extension near Chesham | £42 | £277 |
| Build A Flat Roof Extension near Dunstable | £41 | £274 |
| Build A Flat Roof Extension near Rickmansworth | £43 | £282 |
| Build A Flat Roof Extension near St Albans | £43 | £272 |
| Build A Flat Roof Extension near Harpenden | £45 | £282 |
| Build A Flat Roof Extension near Hazlemere | £40 | £272 |
| Build A Flat Roof Extension near Luton | £42 | £279 |
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 - £17,695

Two storey extension - £88,293

Build a timber frame extension - £26,195

Build a swimming pool - £81,195

Single storey extension - £58,904

Side return extension - £43,696

Install an RSJ - £2,395

Outbuilding - £10,195

Build a Mansard loft conversion - £52,195

Loft conversion - £35,580

Build a kitchen extension - £42,195

Hip to gable loft conversion - £42,195

Granny annexe - £87,195

Garden office - £10,195

Convert a Garage - £16,195

Garage - £18,695

Build a flat roof extension - £22,195

Build a dormer loft conversion - £42,195

Concrete foundations - £6,445

Convert a bungalow loft - £29,195

Convert a basement - £39,696