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Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...
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 Abbots Langley. Please contact us for a free, no obligation quote a...
Chrysalis are here to help customers who need an Extension Builder in Abbots Langley. We offer a competitive rate to complete all your extension bu...
Relax... you have found a reliable extension builder in Abbots Langley. PERFORMA CONSTRUCTION LIMITED is a friendly and reliable company based in A...
Peter Rourke
Trusted and professional extension builder in Abbots Langley. Experienced in all extension buildering work and keeping within budget and on quote. ...
Buyerz Trading is an established and experienced local extension builder in Abbots Langley. Please contact us for a free, no obligation quote and c...
Are you looking for resin driveways in North London? We are a leading builder of driveways and patios in North London. We have expertise in various...
IC Builders have been helping customers in St Albans and the surrounding area by providing professional, trustworthy building services.We k...
Need to find an Extension Builder near you for all your extension buildering work?
ARI Studio LTD provides a local, trusted extension build...

A flat roof extension ranges from the cheapest of £22,040 (ARI Studio LTD based in WD7) to the dearest of £22,536 (R. Newman Construction based in AL4), 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 Abbots Langley by posting a job with HaMuch. We'll send it to extension builders in Abbots Langley.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Watford | £43 | £280 |
| 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 Bushey | £43 | £278 |
| Build A Flat Roof Extension near St Albans | £43 | £272 |
| Build A Flat Roof Extension near Rickmansworth | £43 | £282 |
| Build A Flat Roof Extension near Borehamwood | £42 | £271 |
| Build A Flat Roof Extension near Berkhamsted | £41 | £273 |
| Build A Flat Roof Extension near Chesham | £42 | £277 |
| Build A Flat Roof Extension near Harpenden | £45 | £282 |
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 - £17,822

Two storey extension - £88,484

Build a timber frame extension - £26,322

Build a swimming pool - £81,322

Single storey extension - £61,448

Side return extension - £45,127

Install an RSJ - £2,522

Outbuilding - £10,322

Build a Mansard loft conversion - £52,322

Loft conversion - £36,773

Build a kitchen extension - £42,322

Hip to gable loft conversion - £42,322

Granny annexe - £87,322

Garden office - £10,322

Convert a Garage - £16,322

Garage - £18,822

Build a flat roof extension - £22,322

Build a dormer loft conversion - £42,322

Concrete foundations - £6,572

Convert a bungalow loft - £29,322

Convert a basement - £41,127