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AAConcepts
Arshad Ali
We are a Design and Build company based in Hampshire. Proud of our roots, we try to be the very best in the way we go about our business. Friendly...
Steve Lovett Builders
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
General Building Services (Southampton) Ltd
Luke Rees
General Building Services (Southampton) Ltd is a trusted extension builder serving customers in Romsey and the surrounding area. Contact us to toda...
CSY Construction Ltd
Experienced extension builder ready to quote for your work. CSY Construction Ltd is the best extension builder in Romsey. No obligation free quotes...
Grant Construction
Experienced extension builder ready to quote for your work. Grant Construction is the best extension builder in Romsey. No obligation free quotes a...
T & S Construction
Need an Extension Builder in Romsey? T & S Construction has been helping local clients (20 mile radius) with their extension buildering jobs for ma...
Trowel On
Trowel On is an established extension buildering business in Romsey. We come highly recommended and provide competitive quotes for your work.
Novare Plumbing Ltd
The business offers a full design service for both kitchens and bathrooms.We work with you to make the best use of your space and find prod...
Floortrak Limited
Alex Molyneux
Romsey, SO51
We specialise in Epoxy Resin and Polyurethane floor coatings and screeds (very durable and seamless flooring), designed for retail, factories, manu...
Shay building LTD
Shy Browm
Experienced extension builder ready to quote for your work. Shay building LTD is the best extension builder in Romsey. No obligation free quotes an...
£33/hr
£241/day
GDS Building & Maintenance Ltd
GDS Building & Maintenance Ltd is an established and experienced local extension builder in Romsey. Please contact us for a free, no obligation quo...
£34/hr
£241/day
Protouch Builders
Protouch Builders is an established extension buildering business in Romsey. We come highly recommended and provide competitive quotes for your wor...
£33/hr
£330/day
LED Electrical Services
Scott Shrimpton
Need an Extension Builder in Romsey? LED Electrical Services has been helping local clients (20 mile radius) with their extension buildering jobs f...
£31/hr
£222/day
Ace Brickwork Ltd
Ace Brickwork Ltd are here to help customers who need an Extension Builder in Romsey. We offer a competitive rate to complete all your extension bu...
£36/hr
£246/day
LG PLANNING LIMITED
Trusted and professional extension builder in Romsey. Experienced in all extension buildering work and keeping within budget and on quote. LG PLANN...
£25/hr
£161/day
James Golby Construction
James Golby
ROMSEY, SO51
All our work carries a life time guarantee , If we did it and you have a problem we want to know about it. Not the bloke in the pub or your next do...
£34/hr
£241/day
1st Oak Building Preservation & Maintenance
Relax... you have found a reliable extension builder in Romsey. 1st Oak Building Preservation & Maintenance is a friendly and reliable company base...
£34/hr
£240/day
DSH Roofing
Need to find an Extension Builder near you for all your extension buildering work?
DSH Roofing provides a local, trusted extension builderi...
£37/hr
£264/day
Chris Buttler Builders
Experienced extension builder ready to quote for your work. Chris Buttler Builders is the best extension builder in Romsey. No obligation free quot...
£36/hr
£255/day
BARTITIONS DESIGN & BUILD LTD
Need an Extension Builder in Romsey? BARTITIONS DESIGN & BUILD LTD has been helping local clients (20 mile radius) with their extension buildering...
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 Romsey extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Romsey | £32 | £230 |
| Extension Builders near Chandler's Ford | £34 | £245 |
| Extension Builders near Totton | £34 | £243 |
| Extension Builders near Eastleigh | £34 | £244 |
| Extension Builders near Southampton | £34 | £243 |
| Extension Builders near Test Valley | £37 | £261 |
| Extension Builders near New Forest | £32 | £245 |
| Extension Builders near Winchester | £39 | £283 |
| Extension Builders near Hedge End | £34 | £244 |
| Extension Builders near Locks Heath | £33 | £240 |
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 - £25,928

Garden office - £9,928

Granny annexe - £86,928

Build a flat roof extension - £21,928

Convert a Garage - £15,928

Hip to gable loft conversion - £41,928

Convert a bungalow loft - £28,928

Build a dormer loft conversion - £41,928

Build a swimming pool - £80,928

Build a Mansard loft conversion - £51,928

Concrete foundations - £6,178

Underpin a building - £17,428

Two storey extension - £87,892

Convert a basement - £36,690

Side return extension - £40,690

Loft conversion - £33,075

Garage - £18,428

Single storey extension - £53,560

Outbuilding - £9,928

Install an RSJ - £2,128

Build a kitchen extension - £41,928
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