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SBS Building Services
Steve Bannister
Gosport, PO12
We are a small family run business with over 20 years experience in brickwork, bathroom/kitchen fitting, roofing, landscaping, fencing, tiling and ...
"Two storey extension" - PO12, job posted 30/09/25
A W PAVING LTD
Anthony Withey
Trusted and professional extension builder in Gosport. Experienced in all extension buildering work and keeping within budget and on quote. A W PAV...
"Single storey extension" - GOSPORT, job posted 21/07/25
O NEILL CONSTRUCTION LTD
O NEILL CONSTRUCTION LTD is an established extension buildering business in Gosport. We come highly recommended and provide competitive quotes for ...
"Two storey extension" - PORTSMOUTH, job posted 08/07/25
Shepperd Developments
Experienced extension builder ready to quote for your work. Shepperd Developments is the best extension builder in Gosport. No obligation free quot...
"RSJ installation" - PO2, job posted 25/11/24
Portsmouth Building Repairs
Experienced extension builder ready to quote for your work. Portsmouth Building Repairs is the best extension builder in Gosport. No obligation fre...
"Loft conversion" - PORTSMOUTH, job posted 06/11/24
Peter Fenn Property
Gosport, PO12
Peter Fenn Property is a trusted extension builder serving customers in Gosport and the surrounding area. Contact us to today to get a competitive ...
"Garage 5 metre by 4.7" - PORTSMO, job posted 28/09/24
JKS Property
JKS Property is an established and experienced local extension builder in Gosport. Please contact us for a free, no obligation quote and competitiv...
"Loft conversion" - PORTSMOUTH, job posted 14/09/24
M.K Warner Building Services
Gosport, PO12
M.K Warner Building Services is an established extension buildering business in Gosport. We come highly recommended and provide competitive quotes ...
"Loft conversion" - PORTSMOUTH, job posted 19/08/24
BUILD PROJECT LIMITED
BUILD PROJECT LIMITED are here to help customers who need an Extension Builder in Gosport. We offer a competitive rate to complete all your extensi...
"Loft conversion" - PORTSMOUTH, job posted 29/07/24
JM Roofing & Building Services
Experienced extension builder ready to quote for your work. JM Roofing & Building Services is the best extension builder in Gosport. No obligation ...
"Loft conversion: I am asking for to have loft conversion done to my house which has 3 bedrooms. It is a mid terraced house. What I am looking for is to build 2 big bedrooms in the loft and to have with fitted wardrobes in both of the rooms as well make extra storage units too and also to build a..." - PORTSMOUTH, job posted 11/04/24
SLG Mills Building Services
Relax... you have found a reliable extension builder in Gosport. SLG Mills Building Services is a friendly and reliable company based in Gosport wh...
"Loft conversion in my bunglow. No plans" - PORTSMOUTH, job posted 03/10/23
H B Builders
Steve Harris
Hi my name is Steve harris of hb builders we are based in portchester and have over 40 years of experience in the building trade we would be mor...
"Loft conversion" - PORTSMOUTH, job posted 09/08/23
Build Light Group
Jason Wall
Build Light Group is an established and experienced local extension builder in Gosport. Please contact us for a free, no obligation quote and compe...
Bribern Property Services
Relax... you have found a reliable extension builder in Gosport. Bribern Property Services is a friendly and reliable company based in Gosport who ...
A G Builders
Experienced extension builder ready to quote for your work. A G Builders is the best extension builder in Gosport. No obligation free quotes and ma...
NICK SMITH BUILDERS
Nick Smith
NICK SMITH BUILDERS is an established extension buildering business in Gosport. We come highly recommended and provide competitive quotes for your ...
Thermic Homes
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
Gosport, PO13
Relax... you have found a reliable extension builder in Gosport. MA Builders is a friendly and reliable company based in Gosport who consider no jo...
R And S Building
Need to find an Extension Builder near you for all your extension buildering work?
R And S Building provides a local, trusted extension bui...
ROWLANDS CONSTRUCTION
Relax... you have found a reliable extension builder in Gosport. ROWLANDS CONSTRUCTION is a friendly and reliable company based in Gosport who cons...
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 Gosport extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Gosport | £35 | £246 |
| Extension Builders near Lee-on-the-Solent | £35 | £249 |
| Extension Builders near Portsmouth | £36 | £250 |
| Extension Builders near Fareham | £35 | £250 |
| Extension Builders near Ryde | £34 | £255 |
| Extension Builders near Havant & Waterloo | £35 | £248 |
| Extension Builders near Waterlooville | £36 | £250 |
| Extension Builders near Havant | £35 | £249 |
| Extension Builders near Locks Heath | £33 | £240 |
| Extension Builders near Horndean | £36 | £254 |
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 - £26,000
Garden office - £10,000
Granny annexe - £87,000
Build a flat roof extension - £22,000
Convert a Garage - £16,000
Hip to gable loft conversion - £42,000
Convert a bungalow loft - £29,000
Build a dormer loft conversion - £42,000
Build a swimming pool - £81,000
Build a Mansard loft conversion - £52,000
Concrete foundations - £6,250
Underpin a building - £17,500
Two storey extension - £88,000
Convert a basement - £37,500
Side return extension - £41,500
Loft conversion - £33,750
Garage - £18,500
Single storey extension - £55,000
Outbuilding - £10,000
Install an RSJ - £2,200
Build a kitchen extension - £42,000
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