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Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...
J Wijayamohan
JJSR Construction Ltd is an established and experienced local extension builder in Radlett. Please contact us for a free, no obligation quote and c...
Rafal Szczepanski
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...
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 Radlett. Please contact us for a free, no obligation quote and comp...
RLC Construction are here to help customers who need an Extension Builder in Radlett. We offer a competitive rate to complete all your extension bu...
Relax... you have found a reliable extension builder in Radlett. Building Service and Support Ltd is a friendly and reliable company based in Radle...
Ciaran Feeney
Need to find an Extension Builder near you for all your extension buildering work?
COMPLETE CIVIL ENGINEERING provides a local, trusted ext...
Chrysalis are here to help customers who need an Extension Builder in Radlett. We offer a competitive rate to complete all your extension builderin...
Relax... you have found a reliable extension builder in Radlett. PERFORMA CONSTRUCTION LIMITED is a friendly and reliable company based in Radlett ...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in Radlett by posting a job with HaMuch and we will send it to extension builders in Radlett.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Borehamwood | £42 | £271 |
| Convert A Basement near Bushey | £43 | £278 |
| Convert A Basement near Watford | £43 | £280 |
| Convert A Basement near St Albans | £43 | £272 |
| Convert A Basement near High Barnet | £43 | £272 |
| Convert A Basement near Potters Bar | £43 | £273 |
| Convert A Basement near Hatfield | £42 | £266 |
| Convert A Basement near Harrow | £43 | £270 |
| Convert A Basement near Brent Cross | £43 | £273 |
| Convert A Basement near Rickmansworth | £43 | £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 - £17,821

Two storey extension - £88,481

Build a timber frame extension - £26,321

Build a swimming pool - £81,321

Single storey extension - £61,416

Side return extension - £45,109

Install an RSJ - £2,521

Outbuilding - £10,321

Build a Mansard loft conversion - £52,321

Loft conversion - £36,758

Build a kitchen extension - £42,321

Hip to gable loft conversion - £42,321

Granny annexe - £87,321

Garden office - £10,321

Convert a Garage - £16,321

Garage - £18,821

Build a flat roof extension - £22,321

Build a dormer loft conversion - £42,321

Concrete foundations - £6,571

Convert a bungalow loft - £29,321

Convert a basement - £41,109