Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Trusted and professional extension builder in BN16. Experienced in all extension buildering work and keeping within budget and on quote. Stretch My...
M Wesley General Builder & Property Maintenance is a trusted extension builder serving customers in BN16 and the surrounding area. Contact us to to...
Experienced extension builder ready to quote for your work. C C OLEARY CONSTRUCTION is the best extension builder in BN16. No obligation free quote...
Relax... you have found a reliable extension builder in BN16. Haynes & Scott Developments is a friendly and reliable company based in BN16 who cons...
Trusted and professional extension builder in BN16. Experienced in all extension buildering work and keeping within budget and on quote. S J Peace ...
Relax... you have found a reliable extension builder in BN16. ONE BUILD is a friendly and reliable company based in BN16 who consider no job as too...
At Hive Interior Projects we are truly passionate about interiors, there is nothing we love more than bringing awe inspiring designs to life for ou...
From £86,872
RpMtilingservices is a trusted extension builder serving customers in BN16 and the surrounding area. Contact us to today to get a competitive quote...
From £86,816
Coastal wall ties ltd are specialists in wall tie replacement, re-pointing and cavity Wall insulation removal serving the Sussex and Hampshire area...

Building a granny annexe ranges from £86,744 (ONE BUILD based in BN17) to £87,344 (Hive Interior Projects based in BN16), 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 BN16 by posting a job with HaMuch. We will send it to extension builders in BN16 who will be happy to help you.
"Granny annexe" - BN17, job posted 05/07/24
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Rustington | £35 | £242 |
| Granny Annexe near Littlehampton | £35 | £241 |
| Granny Annexe near Arun | £35 | £241 |
| Granny Annexe near Worthing | £35 | £249 |
| Granny Annexe near Lancing | £36 | £249 |
| Granny Annexe near Bognor Regis | £35 | £247 |
| Granny Annexe near Shoreham-by-Sea | £36 | £250 |
| Granny Annexe near Chichester | £34 | £242 |
| Granny Annexe near Brighton | £35 | £251 |
| Granny Annexe near Brighton and Hove | £35 | £251 |
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 - £17,464

Two storey extension - £87,946

Build a timber frame extension - £25,964

Build a swimming pool - £80,964

Single storey extension - £54,280

Side return extension - £41,095

Install an RSJ - £2,164

Outbuilding - £9,964

Build a Mansard loft conversion - £51,964

Loft conversion - £33,413

Build a kitchen extension - £41,964

Hip to gable loft conversion - £41,964

Granny annexe - £86,964

Garden office - £9,964

Convert a Garage - £15,964

Garage - £18,464

Build a flat roof extension - £21,964

Build a dormer loft conversion - £41,964

Concrete foundations - £6,214

Convert a bungalow loft - £28,964

Convert a basement - £37,095