Local PO15 extension builders & latest jobs
A W PAVING LTD
£46/hour
£274/day
Trusted and professional extension builder in PO15. Experienced in all extension buildering work and keeping within budget and on quote. A W PAVING...
"I messaged and tried to call. Not sure how to speak fo someone. I would like to discuss a possible extension and help. If you are too busy can you recommend someone you would trust or a number where I can speak to someone Thanks Paul" - PO14, job posted 27/04/26
O NEILL CONSTRUCTION LTD
£35/hour
£247/day
O NEILL CONSTRUCTION LTD is an established extension buildering business in PO15. We come highly recommended and provide competitive quotes for you...
"Garage" - SO31, job posted 07/03/26
NICK SMITH BUILDERS
£25/hour
£223/day
NICK SMITH BUILDERS is an established extension buildering business in PO15. We come highly recommended and provide competitive quotes for your wor...
Thermic Homes
£41/hour
£288/day
Thermic Homes is an energy-saving home improvement company operating out of the south coast of England. Our mission is to create warmer homes for t...
MA Builders
£34/hour
£241/day
Relax... you have found a reliable extension builder in PO15. MA Builders is a friendly and reliable company based in PO15 who consider no job as t...
Stubbington Roofing Ltd.
£38/hour
£273/day
Stubbington Roofing Ltd. is an established extension buildering business in PO15. We come highly recommended and provide competitive quotes for you...
ITD Builders Ltd
£26/hour
£255/day
Been in the trade for over 30 yrs and take pride in my work. Fully insured and references both trade and private available
Slate Insulations Ltd
£36/hour
£250/day
We are experts in cavity wall insulation, cavity wall insulation removal, loft insulation, loft boarding, room in roof insulation, chemical damp pr...
DAVE HARRIOTT BUILDING SERVICE
£35/hour
£248/day
Trusted and professional extension builder in PO15. Experienced in all extension buildering work and keeping within budget and on quote. DAVE HARRI...
Stubbs Builders Ltd
£35/hour
£240/day
We were incorporated in 2015 and have been providing a level of service to our clients that is unparalleled, using knowledge built from 20+ years w...
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 PO15 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Fareham | £35 | £250 |
| Extension Builders near Locks Heath | £33 | £240 |
| Extension Builders near Lee-on-the-Solent | £35 | £249 |
| Extension Builders near Hedge End | £34 | £244 |
| Extension Builders near Gosport | £35 | £246 |
| Extension Builders near Portsmouth | £36 | £250 |
| Extension Builders near Waterlooville | £36 | £250 |
| Extension Builders near Southampton | £34 | £243 |
| Extension Builders near Horndean | £35 | £253 |
| Extension Builders near Eastleigh | £34 | £244 |
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 - £26,032
Garden office - £10,032
Granny annexe - £87,032
Build a flat roof extension - £22,032
Convert a Garage - £16,032
Hip to gable loft conversion - £42,032
Convert a bungalow loft - £29,032
Build a dormer loft conversion - £42,032
Build a swimming pool - £81,032
Build a Mansard loft conversion - £52,032
Concrete foundations - £6,282
Underpin a building - £17,532
Two storey extension - £88,048
Convert a basement - £37,860
Side return extension - £41,860
Loft conversion - £34,050
Garage - £18,532
Single storey extension - £55,640
Outbuilding - £10,032
Install an RSJ - £2,232
Build a kitchen extension - £42,032
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