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Select your affordable Broadstairs extension builder
Brendan Healy
All building work , all hoyse maintenance. House extension and refurbishment works.
At Wells & Co we offer a comprehensive building service. We specialise in Period properties, bespoke renovations and steel fabrication.Along with o...
Christian Builders Margate Ltd is a multi-service company founded by Nick Christian. We operate with a highly skilled team of designers, tradesmen,...
GDB CONSTRUCTION is a trusted extension builder serving customers in Broadstairs and the surrounding area. Contact us to today to get a competitive...
Festim Kastrati
We been for almost 15 years in the building trade,
we are easy going and willing to work with our client and to archive the best r...
Need to find an Extension Builder near you for all your extension buildering work?
Bespoke building projects provides a local, trusted exte...
From £17,532
Jordan Pink
Monarch Builders South East Ltd is an established and experienced local extension builder in Broadstairs. Please contact us for a free, no obligati...
From £17,428
Teekay solutions Limited is an established and experienced local extension builder in Broadstairs. Please contact us for a free, no obligation quot...
From £17,132
Design – our highly experienced design team can help you visualise your dream outcomes, working sympathetically with your space to find the perfe...
From £17,100
Relax... you have found a reliable extension builder in Broadstairs. Paragon Stone Design is a friendly and reliable company based in Broadstairs w...

Underpinning ranges from £16,812 (B H G M Ltd based in CT7) to £17,532 (Monarch Builders South East Ltd based in CT9), 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 Broadstairs by posting a job with HaMuch and we will send it to extension builders in Broadstairs.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Broadstairs | £27 | £208 |
| Underpin A Building near Ramsgate | £27 | £208 |
| Underpin A Building near Margate | £27 | £208 |
| Underpin A Building near Thanet | £27 | £207 |
| Underpin A Building near Deal | £26 | £199 |
| Underpin A Building near Herne Bay | £28 | £213 |
| Underpin A Building near Canterbury | £31 | £232 |
| Underpin A Building near Dover | £29 | £226 |
| Underpin A Building near Whitstable | £28 | £214 |
| Underpin A Building near Folkestone | £31 | £233 |
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 - £17,180

Two storey extension - £87,520

Build a timber frame extension - £25,680

Build a swimming pool - £80,680

Single storey extension - £48,600

Side return extension - £37,900

Install an RSJ - £1,880

Outbuilding - £9,680

Build a Mansard loft conversion - £51,680

Loft conversion - £30,750

Build a kitchen extension - £41,680

Hip to gable loft conversion - £41,680

Granny annexe - £86,680

Garden office - £9,680

Convert a Garage - £15,680

Garage - £18,180

Build a flat roof extension - £21,680

Build a dormer loft conversion - £41,680

Concrete foundations - £5,930

Convert a bungalow loft - £28,680

Convert a basement - £33,900