Build additional living space on your property in Southwater

A granny annexe is the ideal solution for offering a young family member their own space in your home while they save up for their own house, or to help an older relative have some independence while keeping them at a safe distance. But how much do they cost to build in Southwater?

Granny annexe cost in Southwater - Sort by rates or availability

Main Construction

From £87,440

(last active 01/10/26)

Need to find an Extension Builder near you for all your extension buildering work?

Main Construction provides a local, trusted extension bu...

MPS Home Improvements Ltd

From £86,872

(last active 29/09/26)

Need an Extension Builder in Southwater? MPS Home Improvements Ltd has been helping local clients (20 mile radius) with their extension buildering ...

J Stevens Roofing & Guttering

From £87,328

(last active 27/09/26)

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

H P Building Services Sussex

From £86,992

Member since August 2026

H P Building Services Sussex is a one-stop solution for all your extension buildering needs. Establish over 10 years ago and covering 20 miles arou...

DPP Construction (David Price Partnership)

From £87,272

(last active 23/09/26)

Need to find an Extension Builder near you for all your extension buildering work?

DPP Construction (David Price Partnership) provides a lo...

R S Construction (Surrey)

From £87,168

(last active 22/09/26)

R S Construction (Surrey) is an established extension buildering business in Southwater. We come highly recommended and provide competitive quotes ...

Shercoriana London Ltd

From £87,032

(last active 22/09/26)

We are a family run business we 40 years experience delivering multiple projects from new developments . Extension. Loft conversion. Including foun...

Futureways Design and Build

From £87,112

(last active 19/09/26)

Location

, BN18

Futureways Design and Build are here to help customers who need an Extension Builder in Southwater. We offer a competitive rate to complete all you...

Alan Pacy Builder

From £87,200

(last active 18/09/26)

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Garage Door Repairs

From £87,408

(last active 18/09/26)

Garage Door Repairs is an established extension buildering business in Southwater. We come highly recommended and provide competitive quotes for yo...

Granny Annexe Cost in Southwater

Estimates for granny annexe near Southwater

Building a granny annexe ranges from £86,872 (MPS Home Improvements Ltd based in RH14) to £87,440 (Main Construction based in BN12), 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 Southwater by posting a job with HaMuch. We will send it to extension builders in Southwater who will be happy to help you.


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Granny Annexe near Horsham£38£265
Granny Annexe near Mid Sussex£35£261
Granny Annexe near Crawley£38£255
Granny Annexe near Burgess Hill£36£240
Granny Annexe near Haywards Heath£35£256
Granny Annexe near Horley£38£258
Granny Annexe near Shoreham-by-Sea£36£250
Granny Annexe near Lancing£37£251
Granny Annexe near Reigate£40£270
Granny Annexe near East Grinstead£37£259

Estimates for common extension builder jobs in Southwater;

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.

More extensions & conversions cost guides...