From £86,864
All Build Construction Services is an established and experienced local extension builder in BH22. Please contact us for a free, no obligation quot...
From £87,160
Need to find an Extension Builder near you for all your extension buildering work?
J.V MARSTON BUILDERS provides a local, trusted extension...
From £88,200
Building extensions and conversions - commercial and domesticstructural repairsgroundworksdrainage workspaving, patios and concreti...
From £87,264
Ankers & Rawlings Developments Ltd is an established extension buildering business in BH22. We come highly recommended and provide competitive quot...
From £86,808
Need to find an Extension Builder near you for all your extension buildering work?
G DANIEL BUILD & MAINT LTD provides a local, trusted ext...
From £87,152
Veramut is a trusted extension builder serving customers in BH22 and the surrounding area. Contact us to today to get a competitive quote for exten...
From £87,848
Rooster Construction is a family-run business located in Bournemouth, Dorset, backed by over 15 years of industry expertise. We specialize in ...
From £86,904
Experienced extension builder ready to quote for your work. PINEVALE BUILDING is the best extension builder in BH22. No obligation free quotes and ...
From £87,176
Trusted and professional extension builder in BH22. Experienced in all extension buildering work and keeping within budget and on quote. MDW KITCHE...

Building a granny annexe ranges from £86,808 (G DANIEL BUILD & MAINT LTD based in BH21) to £88,200 (Wade and Son Builders based in bh22), 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 BH22 by posting a job with HaMuch. We will send it to extension builders in BH22 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Bournemouth | £38 | £257 |
| Granny Annexe near Christchurch | £36 | £251 |
| Granny Annexe near Poole | £38 | £250 |
| Granny Annexe near New Forest | £32 | £245 |
| Granny Annexe near Totton | £34 | £243 |
| Granny Annexe near Salisbury | £35 | £247 |
| Granny Annexe near Romsey | £32 | £230 |
| Granny Annexe near Southampton | £34 | £243 |
| Granny Annexe near Eastleigh | £34 | £244 |
| Granny Annexe near Dorchester | £30 | £230 |
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 - £17,770

Two storey extension - £88,406

Build a timber frame extension - £26,270

Build a swimming pool - £81,270

Single storey extension - £60,408

Side return extension - £44,542

Install an RSJ - £2,470

Outbuilding - £10,270

Build a Mansard loft conversion - £52,270

Loft conversion - £36,285

Build a kitchen extension - £42,270

Hip to gable loft conversion - £42,270

Granny annexe - £87,270

Garden office - £10,270

Convert a Garage - £16,270

Garage - £18,770

Build a flat roof extension - £22,270

Build a dormer loft conversion - £42,270

Concrete foundations - £6,520

Convert a bungalow loft - £29,270

Convert a basement - £40,542