From £87,344
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 £86,776
M Wesley General Builder & Property Maintenance is a trusted extension builder serving customers in BN16 and the surrounding area. Contact us to to...
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...
From £87,200
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,664
Welcome to Kudos Building ltd, specialists in extensions, renovations, loft conversions, & all aspects of property maintanance in Worthing...
From £86,880
Trusted and professional extension builder in BN16. Experienced in all extension buildering work and keeping within budget and on quote. Stretch My...
From £87,112
Relax... you have found a reliable extension builder in BN16. Haynes & Scott Developments is a friendly and reliable company based in BN16 who cons...
From £86,904
R J H CONSTRUCTION (SUSSEX)LTD are here to help customers who need an Extension Builder in BN16. We offer a competitive rate to complete all your e...
From £86,984
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Building a granny annexe ranges from £86,664 (KUDOS BUILDING LTD 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 | £36 | £246 |
| Granny Annexe near Littlehampton | £35 | £244 |
| Granny Annexe near Arun | £35 | £241 |
| Granny Annexe near Worthing | £35 | £251 |
| Granny Annexe near Lancing | £37 | £251 |
| 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 - £17,455

Two storey extension - £87,933

Build a timber frame extension - £25,955

Build a swimming pool - £80,955

Single storey extension - £54,104

Side return extension - £40,996

Install an RSJ - £2,155

Outbuilding - £9,955

Build a Mansard loft conversion - £51,955

Loft conversion - £33,330

Build a kitchen extension - £41,955

Hip to gable loft conversion - £41,955

Granny annexe - £86,955

Garden office - £9,955

Convert a Garage - £15,955

Garage - £18,455

Build a flat roof extension - £21,955

Build a dormer loft conversion - £41,955

Concrete foundations - £6,205

Convert a bungalow loft - £28,955

Convert a basement - £36,996