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Clint Construction
£39/hour
£272/day
Relax... you have found a reliable extension builder in TN25. Clint Construction is a friendly and reliable company based in TN25 who consider no j...
"RSJ installation , 6 x 6m rsj’s" - TN23, job posted 15/06/26
E&F Carpentry and Building Services
£41/hour
£281/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Bungalow loft conversion" - TN23, job posted 14/02/26
Neil Baxter Construction
£38/hour
£270/day
Neil Baxter Construction are here to help customers who need an Extension Builder in TN25. We offer a competitive rate to complete all your extensi...
"Underpinning - Soil test, engineer and designed drawings and Traditional underpinning" - TN24, job posted 13/08/25
ARIA DESIGN & BUILD
£35/hour
£242/day
ARIA DESIGN & BUILD is an established extension buildering business in TN25. We come highly recommended and provide competitive quotes for your wor...
"Loft conversion" - ASHFORD, job posted 07/01/25
J NARCHANT BUILDING
£35/hour
£245/day
Experienced extension builder ready to quote for your work. J NARCHANT BUILDING is the best extension builder in TN25. No obligation free quotes an...
P F Construction t/a
£36/hour
£262/day
Relax... you have found a reliable extension builder in TN25. P F Construction t/a is a friendly and reliable company based in TN25 who consider no...
ARTISAN CONSTRUCTION
£39/hour
£273/day
ARTISAN CONSTRUCTION is an established and experienced local extension builder in TN25. Please contact us for a free, no obligation quote and compe...
C & K BUILDERS
£35/hour
£252/day
Trusted and professional extension builder in TN25. Experienced in all extension buildering work and keeping within budget and on quote. C & K BUIL...
County Construction
£36/hour
£248/day
County Construction are a reliable and reputable company that work across the County. We are a family-run business with a good reputation and have ...
Proteus Building Services Limited
£39/hour
£269/day
Proteus Building Services Limited is an established extension buildering business in TN25. We come highly recommended and provide competitive quote...
The most important thing is do avoid handing over cash or paying large sums in advance. Be wary of paying cash for a cheaper job, i.e. to avoid VAT, you may be going down a slippery slope of not doing things properly which may eventually mean your job is also not done properly.
Agree when you intend to pay, ideally after you are satisfied with the completed job. If it is a big job agree a schedule of staged payments which is fair to both parties.
To avoid bad tradespeople and to ensure you can find them should they not answer a mobile;
- Get proper contact details and check them yourself
- Check if the company is verified on the Companies House website
- Get phone details, ideally a land line or 0800 number and check it
- Get a physical office address
Get quotes in writing by email or in person if possible. Getting quotes online or by text is ok (make sure you accept the offer by replying). For large projects make a written agreement, schedule of works and snagging plans as part of a working document. Also;
- Agree expected quality of workmanship and materials in advance
- When will work start and when will project be finished, what happens if project over runs ?
- How long is the guarantee on work and materials eg 12 months
- Discuss onsite behaviour in advance (no smoking, swearing or using mobile phones for non-work purposes)
- Agree that your Extension Builder will remove all debris and rubbish and what level of tidying up you want after job
Compare TN25 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Ashford | £36 | £256 |
| Extension Builders near Hythe | £31 | £228 |
| Extension Builders near Folkestone | £31 | £233 |
| Extension Builders near Faversham | £34 | £235 |
| Extension Builders near Canterbury | £31 | £232 |
| Extension Builders near Swale | £35 | £241 |
| Extension Builders near Whitstable | £28 | £214 |
| Extension Builders near Dover | £29 | £226 |
| Extension Builders near Sittingbourne | £35 | £246 |
| Extension Builders near Herne Bay | £28 | £213 |
Job estimates from extension builders near you
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.
Build a timber frame extension - £26,088
Garden office - £10,088
Granny annexe - £87,088
Build a flat roof extension - £22,088
Convert a Garage - £16,088
Hip to gable loft conversion - £42,088
Convert a bungalow loft - £29,088
Build a dormer loft conversion - £42,088
Build a swimming pool - £81,088
Build a Mansard loft conversion - £52,088
Concrete foundations - £6,338
Underpin a building - £17,588
Two storey extension - £88,132
Convert a basement - £38,490
Side return extension - £42,490
Loft conversion - £34,575
Garage - £18,588
Single storey extension - £56,760
Outbuilding - £10,088
Install an RSJ - £2,288
Build a kitchen extension - £42,088
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