From £87,224
Relax... you have found a reliable extension builder in BH4. Colmar Construction Poole is a friendly and reliable company based in BH4 who consider...
From £87,016
Experienced extension builder ready to quote for your work. Triple Three 9 is the best extension builder in BH4. No obligation free quotes and many...
From £86,808
Design'd Living Ltd is a trusted extension builder serving customers in BH4 and the surrounding area. Contact us to today to get a competitive quot...
From £87,008
Revo Home Improvements is a trusted extension builder serving customers in BH4 and the surrounding area. Contact us to today to get a competitive q...
From £86,896
Experienced extension builder ready to quote for your work. GREENDALE CONSTRUCTION LTD is the best extension builder in BH4. No obligation free quo...
From £87,352
All Build Developments was established in 2012 by Joseph Cole. Since that day we have prided ourselves on the quality of service we provide across ...
From £87,224
Experienced extension builder ready to quote for your work. Fiona Interior Designer is the best extension builder in BH4. No obligation free quotes...
From £87,264
Need an Extension Builder in BH4? AKT Roofing Ltd has been helping local clients (20 mile radius) with their extension buildering jobs for many yea...
From £87,120
Experienced extension builder ready to quote for your work. JOSCELYNE BUILDERS is the best extension builder in BH4. No obligation free quotes and ...
From £86,992
Experienced extension builder ready to quote for your work. Nevil Rose is the best extension builder in BH4. No obligation free quotes and many hap...

Building a granny annexe ranges from £86,808 (Design'd Living Ltd based in BH4) to £87,352 (All Build Developments Limited based in BH1), 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 BH4 by posting a job with HaMuch. We will send it to extension builders in BH4 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Bournemouth | £38 | £257 |
| Granny Annexe near Poole | £38 | £250 |
| Granny Annexe near Christchurch | £36 | £251 |
| Granny Annexe near New Forest | £32 | £245 |
| Granny Annexe near Totton | £34 | £243 |
| Granny Annexe near Dorchester | £30 | £230 |
| Granny Annexe near Salisbury | £35 | £247 |
| Granny Annexe near Southampton | £34 | £243 |
| Granny Annexe near Weymouth | £33 | £260 |
| Granny Annexe near Romsey | £32 | £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 - £17,590

Two storey extension - £88,136

Build a timber frame extension - £26,090

Build a swimming pool - £81,090

Single storey extension - £56,808

Side return extension - £42,517

Install an RSJ - £2,290

Outbuilding - £10,090

Build a Mansard loft conversion - £52,090

Loft conversion - £34,598

Build a kitchen extension - £42,090

Hip to gable loft conversion - £42,090

Granny annexe - £87,090

Garden office - £10,090

Convert a Garage - £16,090

Garage - £18,590

Build a flat roof extension - £22,090

Build a dormer loft conversion - £42,090

Concrete foundations - £6,340

Convert a bungalow loft - £29,090

Convert a basement - £38,517