
Ground floor rear
West Berkshire
· Detached
· 2023
£44k
Excl VAT
Average build cost for a ground floor rear extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
7-9%
The average value uplift of a project in the last 2 years.
Project length
8-9 months
The average time taken to complete a project in the last 2 years.
Planning approval
79%
The average approval rate of projects in the last 2 years.
Time to approval
60 days
The average number of days taken to approve a project in the last 2 years.
Number approved
169,462
The number of applications approved in the last 2 years.

Ground floor rear
Hart
· Semi Detached
· 2024
£67k
Excl VAT
Average build cost for a ground floor rear extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
7-9%
The average value uplift of a project in the last 2 years.
Project length
8-9 months
The average time taken to complete a project in the last 2 years.
Planning approval
79%
The average approval rate of projects in the last 2 years.
Time to approval
60 days
The average number of days taken to approve a project in the last 2 years.
Number approved
169,462
The number of applications approved in the last 2 years.

Ground floor rear
Wokingham
· Detached
· 2024
£80k
Excl VAT
Average build cost for a ground floor rear extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
7-9%
The average value uplift of a project in the last 2 years.
Project length
8-9 months
The average time taken to complete a project in the last 2 years.
Planning approval
79%
The average approval rate of projects in the last 2 years.
Time to approval
60 days
The average number of days taken to approve a project in the last 2 years.
Number approved
169,462
The number of applications approved in the last 2 years.

Ground floor rear
Wokingham
· Semi Detached
· 2024
£92k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Average build cost for a ground floor rear extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
7-9%
The average value uplift of a project in the last 2 years.
Project length
8-9 months
The average time taken to complete a project in the last 2 years.
Planning approval
79%
The average approval rate of projects in the last 2 years.
Time to approval
60 days
The average number of days taken to approve a project in the last 2 years.
Number approved
169,462
The number of applications approved in the last 2 years.

Ground floor rear
Buckinghamshire
· Semi Detached
· 2024
£64k
Excl VAT
Average build cost for a ground floor rear extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
7-9%
The average value uplift of a project in the last 2 years.
Project length
8-9 months
The average time taken to complete a project in the last 2 years.
Planning approval
79%
The average approval rate of projects in the last 2 years.
Time to approval
60 days
The average number of days taken to approve a project in the last 2 years.
Number approved
169,462
The number of applications approved in the last 2 years.

Ground floor rear
Windsor and Maidenhead
· Semi Detached
· 2022
£83k
Excl VAT
Average build cost for a ground floor rear extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
7-9%
The average value uplift of a project in the last 2 years.
Project length
8-9 months
The average time taken to complete a project in the last 2 years.
Planning approval
79%
The average approval rate of projects in the last 2 years.
Time to approval
60 days
The average number of days taken to approve a project in the last 2 years.
Number approved
169,462
The number of applications approved in the last 2 years.

Ground floor rear
Woking
· Detached
· 2023
£47k
Excl VAT

Ground floor rear
Slough
· Terrace
· 2024
£105k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Runnymede
· Semi Detached
· 2024
£78k
Excl VAT

Ground floor rear
Horsham
· Semi Detached
· 2024
£88k
Excl VAT

Ground floor rear
Buckinghamshire
· Terrace
· 2022
£44k
Excl VAT

Ground floor rear
Buckinghamshire
· Semi Detached
· 2023
£105k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Hillingdon
· Terrace
· 2024
£90k
Excl VAT

Ground floor rear
Hillingdon
· Semi Detached
· 2022
£71k
Excl VAT

Ground floor rear
Hounslow
· Semi Detached
· 2023
£98k
Excl VAT

Ground floor rear
Richmond upon Thames
· Terrace
· 2023
£61k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Mole Valley
· Semi Detached
· 2024
£72k
Excl VAT

Ground floor rear
Epsom and Ewell
· Detached
· 2024
£86k
Excl VAT

Ground floor rear
Richmond upon Thames
· Semi Detached
· 2023
£65k
Excl VAT

Ground floor rear
Milton Keynes
· Terrace
· 2023
£43k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Kingston upon Thames
· Terrace
· 2024
£64k
Excl VAT

Ground floor rear
Kingston upon Thames
· Terrace
· 2023
£81k
Excl VAT

Ground floor rear
Kingston upon Thames
· Terrace
· 2024
£99k
Excl VAT

Ground floor rear
Epsom and Ewell
· Semi Detached
· 2022
£30k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Hillingdon
· Semi Detached
· 2023
£71k
Excl VAT

Ground floor rear
Hillingdon
· Semi Detached
· 2022
£87k
Excl VAT

Ground floor rear
Richmond upon Thames
· Semi Detached
· 2023
£72k
Excl VAT

Ground floor rear
Ealing
· End Of Terrace
· 2022
£98k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Richmond upon Thames
· Flat
· 2023
£112k
Excl VAT

Ground floor rear
Epsom and Ewell
· End Of Terrace
· 2022
£47k
Excl VAT

Ground floor rear
Dacorum
· Detached
· 2022
£81k
Excl VAT

Ground floor rear
Reigate and Banstead
· Semi Detached
· 2024
£118k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Harrow
· Detached
· 2024
£57k
Excl VAT

Ground floor rear
Kingston upon Thames
· Semi Detached
· 2023
£56k
Excl VAT

Ground floor rear
Epsom and Ewell
· Terrace
· 2023
£44k
Excl VAT

Ground floor rear
Ealing
· Terrace
· 2024
£98k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Reigate and Banstead
· Terrace
· 2024
£77k
Excl VAT

Ground floor rear
Ealing
· Terrace
· 2024
£68k
Excl VAT

Ground floor rear
Ealing
· Flat
· 2022
£53k
Excl VAT

Ground floor rear
Watford
· Bungalow
· 2024
£70k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Richmond upon Thames
· Terrace
· 2024
£41k
Excl VAT

Ground floor rear
Sutton
· Semi Detached
· 2024
£97k
Excl VAT

Ground floor rear
Wandsworth
· Semi Detached
· 2023
£69k
Excl VAT

Ground floor rear
Croydon
· Terrace
· 2022
£74k
Excl VAT
AI images
Images are AI-generated for homeowner privacy

Ground floor rear
Sutton
· Semi Detached
· 2024
£158k
Excl VAT

Ground floor rear
Croydon
· Detached
· 2024
£65k
Excl VAT

Ground floor rear
Wandsworth
· Terrace
· 2023
£81k
Excl VAT

Ground floor rear
Wandsworth
· Terrace
· 2022
£131k
Excl VAT
AI images
Images are AI-generated for homeowner privacy