From £17,924
Nouvell Decor is a trusted extension builder serving customers in AL7 and the surrounding area. Contact us to today to get a competitive quote for ...
From £17,484
JK Doors is a trusted extension builder serving customers in AL7 and the surrounding area. Contact us to today to get a competitive quote for exten...
From £17,892
Need an Extension Builder in AL7? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £17,548
Trusted and professional extension builder in AL7. Experienced in all extension buildering work and keeping within budget and on quote. WHITE EAGLE...
From £17,684
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in AL7. No obligation free quotes and m...
From £18,060
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...
From £17,596
Experienced extension builder ready to quote for your work. Mr is the best extension builder in AL7. No obligation free quotes and many happy custo...
From £17,692
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £17,812
skilled worker who specializes in completing a wide range of building and renovation projects
From £17,396
Experienced extension builder ready to quote for your work. Jhon is the best extension builder in AL7. No obligation free quotes and many happy cus...

Underpinning ranges from £17,396 (Jhon based in IG1) to £18,060 (Rafix Building based in EN4), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in AL7 by posting a job with HaMuch and we will send it to extension builders in AL7.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Welwyn Garden City | £42 | £268 |
| Underpin A Building near Hatfield | £64 | £283 |
| Underpin A Building near Hertford | £46 | £289 |
| Underpin A Building near Potters Bar | £43 | £273 |
| Underpin A Building near Harpenden | £86 | £315 |
| Underpin A Building near St Albans | £63 | £288 |
| Underpin A Building near Ware | £47 | £296 |
| Underpin A Building near Cheshunt | £48 | £285 |
| Underpin A Building near Stevenage | £44 | £282 |
| Underpin A Building near Hoddesdon | £46 | £296 |
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 - £17,709

Two storey extension - £88,313

Build a timber frame extension - £26,209

Build a swimming pool - £81,209

Single storey extension - £59,176

Side return extension - £43,849

Install an RSJ - £2,409

Outbuilding - £10,209

Build a Mansard loft conversion - £52,209

Loft conversion - £35,708

Build a kitchen extension - £42,209

Hip to gable loft conversion - £42,209

Granny annexe - £87,209

Garden office - £10,209

Convert a Garage - £16,209

Garage - £18,709

Build a flat roof extension - £22,209

Build a dormer loft conversion - £42,209

Concrete foundations - £6,459

Convert a bungalow loft - £29,209

Convert a basement - £39,849