Local PO21 extension builders & recently posted jobs
MBuilding
£30/hour
£242/day
MBuilding are here to help customers who need an Extension Builder in PO21. We offer a competitive rate to complete all your extension buildering j...
Paul Ramsey
£32/hour
£221/day
Trusted and professional extension builder in PO21. Experienced in all extension buildering work and keeping within budget and on quote. Paul Ramse...
Paul Stevens
£40/hour
£278/day
Paul Stevens is a trusted extension builder serving customers in PO21 and the surrounding area. Contact us to today to get a competitive quote for ...
E C Builders Ltd
£30/hour
£214/day
E C Builders Ltd is an established extension buildering business in PO21. We come highly recommended and provide competitive quotes for your work.<...
Regent Property Holdings Ltd
£40/hour
£266/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
K A Griffin General Builder
£36/hour
£257/day
K A Griffin General Builder is an established extension buildering business in PO21. We come highly recommended and provide competitive quotes for ...
Mr R Peterson
£39/hour
£270/day
Mr R Peterson is a trusted extension builder serving customers in PO21 and the surrounding area. Contact us to today to get a competitive quote for...
Tim Open
£32/hour
£222/day
Trusted and professional extension builder in PO21. Experienced in all extension buildering work and keeping within budget and on quote. Tim Open h...
BNS CARPENTRY LTD
£39/hour
£263/day
we are a craftsmen led carpenty and construction business delivering domestic renovations, extensions, kitchens, bathrooms and finely crafted bespo...
A&K Invest
£39/hour
£259/day
A&K Invest is an established and experienced local extension builder in PO21. Please contact us for a free, no obligation quote and competitive rat...
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 PO21 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Bognor Regis | £35 | £247 |
| Extension Builders near Chichester | £34 | £242 |
| Extension Builders near Arun | £35 | £241 |
| Extension Builders near Littlehampton | £35 | £244 |
| Extension Builders near Rustington | £36 | £246 |
| Extension Builders near Havant & Waterloo | £35 | £248 |
| Extension Builders near Havant | £35 | £249 |
| Extension Builders near Worthing | £35 | £251 |
| Extension Builders near Waterlooville | £36 | £250 |
| Extension Builders near Horndean | £35 | £253 |
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 - £25,968

Garden office - £9,968

Granny annexe - £86,968

Build a flat roof extension - £21,968

Convert a Garage - £15,968

Hip to gable loft conversion - £41,968

Convert a bungalow loft - £28,968

Build a dormer loft conversion - £41,968

Build a swimming pool - £80,968

Build a Mansard loft conversion - £51,968

Concrete foundations - £6,218

Underpin a building - £17,468

Two storey extension - £87,952

Convert a basement - £37,140

Side return extension - £41,140

Loft conversion - £33,450

Garage - £18,468

Single storey extension - £54,360

Outbuilding - £9,968

Install an RSJ - £2,168

Build a kitchen extension - £41,968
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