Build additional living space on your property in PO12

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 PO12?

Granny annexe cost in PO12 - Sort by rates or availability

Whites Carpentry & Building

From £87,008

(last active 01/10/26)

Whites Carpentry & Building prides in delivering an excellent extension buildering service and value for money in PO12 and the surrounding areas. ...

R&B Property Improvements

From £88,096

(last active 01/10/26)

We are a Small Family run business with over 30 years experience in the building trade, Carpentry is my main trade, with NVQ Level 2.

SBS Building Services

From £87,144

(last active 28/09/26)

We are a small family run business with over 20 years experience in brickwork, bathroom/kitchen fitting, roofing, landscaping, fencing, tiling and ...

Park Building Services Ltd

From £86,752

(last active 19/09/26)

Park Building Services Ltd is a trusted extension builder serving customers in PO12 and the surrounding area. Contact us to today to get a competit...

Regent Property Holdings Ltd

From £87,128

(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...

K A Griffin General Builder

From £87,056

(last active 18/09/26)

K A Griffin General Builder is an established extension buildering business in PO12. We come highly recommended and provide competitive quotes for ...

Paul Stevens

From £87,224

(last active 18/09/26)

Paul Stevens is a trusted extension builder serving customers in PO12 and the surrounding area. Contact us to today to get a competitive quote for ...

G P H BUILDERS LTD

From £86,776

(last active 18/09/26)

Been in the building trade for over 30years .have in that time worked all over the country on many different projects. 

Have city &...

TP Developments

From £86,768

(last active 15/09/26)

TP Developments are here to help customers who need an Extension Builder in PO12. We offer a competitive rate to complete all your extension builde...

Bailey Construction Services

From £87,144

(last active 08/09/26)

Bailey Construction Services are here to help customers who need an Extension Builder in PO12. We offer a competitive rate to complete all your ext...

Granny Annexe Cost in PO12

Estimates for granny annexe near PO12

Building a granny annexe ranges from £86,752 (Park Building Services Ltd based in PO9) to £88,096 (R&B Property Improvements based in PO9), 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 PO12 by posting a job with HaMuch. We will send it to extension builders in PO12 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 Gosport£35£246
Granny Annexe near Lee-on-the-Solent£35£249
Granny Annexe near Portsmouth£36£250
Granny Annexe near Fareham£35£250
Granny Annexe near Ryde£34£255
Granny Annexe near Havant & Waterloo£35£248
Granny Annexe near Waterlooville£36£250
Granny Annexe near Havant£35£249
Granny Annexe near Locks Heath£33£240
Granny Annexe near Horndean£35£253

Estimates for common extension builder jobs in PO12;

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...