From £87,144
We are a small family run business with over 20 years experience in brickwork, bathroom/kitchen fitting, roofing, landscaping, fencing, tiling and ...
From £86,752
Park Building Services Ltd is a trusted extension builder serving customers in SO14 and the surrounding area. Contact us to today to get a competit...
From £86,768
TP Developments are here to help customers who need an Extension Builder in SO14. We offer a competitive rate to complete all your extension builde...
From £87,224
Elmer Building Services ltd is an established extension buildering business in SO14. We come highly recommended and provide competitive quotes for ...
From £87,144
Bailey Construction Services are here to help customers who need an Extension Builder in SO14. We offer a competitive rate to complete all your ext...
From £86,752
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,120
Need to find an Extension Builder near you for all your extension buildering work?
Mobile Services provides a local, trusted extension buil...
From £87,192
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...
From £87,136
Claytons Building and Roofing are here to help customers who need an Extension Builder in SO14. We offer a competitive rate to complete all your ex...
From £86,960
ROB DINE CONSTRUCTION is an established and experienced local extension builder in SO14. Please contact us for a free, no obligation quote and comp...

Building a granny annexe ranges from £86,752 (Park Building Services Ltd based in PO9) to £87,224 (Elmer Building Services ltd based in BH23), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in SO14 by posting a job with HaMuch. We will send it to extension builders in SO14 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Southampton | £34 | £243 |
| Granny Annexe near Hedge End | £34 | £244 |
| Granny Annexe near Eastleigh | £34 | £244 |
| Granny Annexe near Totton | £34 | £243 |
| Granny Annexe near Locks Heath | £33 | £240 |
| Granny Annexe near Chandler's Ford | £34 | £245 |
| Granny Annexe near Romsey | £32 | £230 |
| Granny Annexe near Fareham | £35 | £250 |
| Granny Annexe near New Forest | £32 | £245 |
| Granny Annexe near Lee-on-the-Solent | £35 | £249 |
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.

Underpin a building - £17,519

Two storey extension - £88,029

Build a timber frame extension - £26,019

Build a swimming pool - £81,019

Single storey extension - £55,384

Side return extension - £41,716

Install an RSJ - £2,219

Outbuilding - £10,019

Build a Mansard loft conversion - £52,019

Loft conversion - £33,930

Build a kitchen extension - £42,019

Hip to gable loft conversion - £42,019

Granny annexe - £87,019

Garden office - £10,019

Convert a Garage - £16,019

Garage - £18,519

Build a flat roof extension - £22,019

Build a dormer loft conversion - £42,019

Concrete foundations - £6,269

Convert a bungalow loft - £29,019

Convert a basement - £37,716