From £87,120
Our building services company Shadow UK Construction Ltd was established in March 2022, but have been providing professional, trustworthy building ...
From £87,040
Need an Extension Builder in Test Valley? BARTITIONS DESIGN & BUILD LTD has been helping local clients (20 mile radius) with their extension build...
From £87,104
JJ Acquisitions ltd is a trusted extension builder serving customers in Test Valley and the surrounding area. Contact us to today to get a competit...
From £87,072
DMT Construction t/a are here to help customers who need an Extension Builder in Test Valley. We offer a competitive rate to complete all your exte...
From £86,984
Relax... you have found a reliable extension builder in Test Valley. Bob Shearer Property Maintenance, Building & Roofing is a friendly and reliabl...
From £86,752
4Walls Project Management Ltd is an established and experienced local extension builder in Test Valley. Please contact us for a free, no obligation...
From £86,896
Relax... you have found a reliable extension builder in Test Valley. Groundcraft Ltd is a friendly and reliable company based in Test Valley who co...
From £87,104
Relax... you have found a reliable extension builder in Test Valley. Eds Builders is a friendly and reliable company based in Test Valley who consi...
From £85,848
We specialise in Epoxy Resin and Polyurethane floor coatings and screeds (very durable and seamless flooring), designed for retail, factories, manu...
From £87,208
STEWART BUILDERS is an established and experienced local extension builder in Test Valley. Please contact us for a free, no obligation quote and co...

Building a granny annexe ranges from £85,848 (Floortrak Limited based in SO51) to £87,208 (STEWART BUILDERS based in SP5), 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 Test Valley by posting a job with HaMuch. We will send it to extension builders in Test Valley who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Test Valley | £37 | £261 |
| Granny Annexe near Andover | £40 | £248 |
| Granny Annexe near Romsey | £32 | £230 |
| Granny Annexe near Salisbury | £35 | £247 |
| Granny Annexe near Winchester | £37 | £266 |
| Granny Annexe near Chandler's Ford | £34 | £245 |
| Granny Annexe near Eastleigh | £34 | £244 |
| Granny Annexe near Totton | £34 | £243 |
| Granny Annexe near Southampton | £34 | £243 |
| Granny Annexe near New Forest | £32 | £245 |
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 - £17,413

Two storey extension - £87,869

Build a timber frame extension - £25,913

Build a swimming pool - £80,913

Single storey extension - £53,256

Side return extension - £40,519

Install an RSJ - £2,113

Outbuilding - £9,913

Build a Mansard loft conversion - £51,913

Loft conversion - £32,933

Build a kitchen extension - £41,913

Hip to gable loft conversion - £41,913

Granny annexe - £86,913

Garden office - £9,913

Convert a Garage - £15,913

Garage - £18,413

Build a flat roof extension - £21,913

Build a dormer loft conversion - £41,913

Concrete foundations - £6,163

Convert a bungalow loft - £28,913

Convert a basement - £36,519