Build additional living space on your property in SL7

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 SL7? To see prices and availability for your job click Get quotes.

HaMuch is Excellent

Granny annexe cost in SL7 - Sort by rates or availability

From £87,280

Member since August 2026

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ABC Associates STRUCTURES 4 U

Relax... you have found a reliable extension builder in SL7. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in SL7 who cons...

From £87,032

(last active 18/07/26)
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GREENWORKS CONSTRUCTION

GREENWORKS CONSTRUCTION is an established and experienced local extension builder in SL7. Please contact us for a free, no obligation quote and com...

From £87,320

(last active 18/07/26)
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Shaks build

Trusted and professional extension builder in SL7. Experienced in all extension buildering work and keeping within budget and on quote. Shaks build...

From £87,280

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Stonehouse Consultants

Stonehouse Consultants is an independent specialist construction consultancy delivering a range of quality construction services to projects throug...

From £86,976

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Complete Home Development

Georgie Noone has worked in the property industry for the last 15 years, undertaking house refurbishments, extensions and new builds. She has worke...

From £87,120

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SPACE Design. Build. Interiors

Relax... you have found a reliable extension builder in SL7. SPACE Design. Build. Interiors is a friendly and reliable company based in SL7 who con...

From £87,304

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JMD Carpentry & Building

James Dawson

Our maidenhead based Carpentry, Joinery & Building company can offer a complete single room or property solution to you. Working with han...

From £87,184

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Good Country Builders

Experienced extension builder ready to quote for your work. Good Country Builders is the best extension builder in SL7. No obligation free quotes a...

From £87,080

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Complete Home Development

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

Complete Home Development provides a local, trusted exte...

From £86,904

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Wooburn Project Management Ltd

Experienced extension builder ready to quote for your work. Wooburn Project Management Ltd is the best extension builder in SL7. No obligation free...

Granny Annexe Cost in SL7

Estimates for granny annexe near SL7

Building a granny annexe ranges from £86,904 (Wooburn Project Management Ltd based in HP12) to £87,320 (Shaks build based in Hp12), 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 SL7 by posting a job with HaMuch. We will send it to extension builders in SL7 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 High Wycombe£39£272
Granny Annexe near Maidenhead£41£273
Granny Annexe near Wycombe£39£271
Granny Annexe near Hazlemere£40£272
Granny Annexe near Slough£42£272
Granny Annexe near Windsor£41£271
Granny Annexe near Windsor & Maidenhead£42£272
Granny Annexe near Gerrards Cross£43£282
Granny Annexe near Woodley£42£266
Granny Annexe near Caversham£38£265

Estimates for common extension builder jobs in SL7;

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...