Ground floor rear
Watford
· Bungalow
· 2024
£70k
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
Hillingdon
· Semi Detached
· 2022
£87k
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
Harrow
· Detached
· 2024
£57k
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
Hillingdon
· Semi Detached
· 2023
£71k
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
Barnet
· Terrace
· 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
St Albans
· Terrace
· 2024
£66k
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
St Albans
· Semi Detached
· 2023
£140k
Excl VAT
Ground floor rear
Hillingdon
· Semi Detached
· 2022
£71k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear
Barnet
· Semi Detached
· 2023
£70k
Excl VAT
Ground floor rear
Buckinghamshire
· Semi Detached
· 2023
£105k
Excl VAT
Ground floor rear
Hillingdon
· Terrace
· 2024
£90k
Excl VAT
Ground floor rear
Barnet
· Semi Detached
· 2023
£53k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear
Ealing
· End Of Terrace
· 2022
£98k
Excl VAT
Ground floor rear
Dacorum
· Detached
· 2022
£81k
Excl VAT
Ground floor rear
Ealing
· Terrace
· 2024
£68k
Excl VAT
Ground floor rear
Barnet
· Semi Detached
· 2023
£66k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear
Ealing
· Flat
· 2022
£53k
Excl VAT
Ground floor rear
Brent
· Flat
· 2022
£92k
Excl VAT
Ground floor rear
Ealing
· Terrace
· 2024
£98k
Excl VAT
Ground floor rear
Hounslow
· Semi Detached
· 2023
£98k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear
Haringey
· End Of Terrace
· 2024
£126k
Excl VAT
Ground floor rear
Enfield
· Terrace
· 2022
£77k
Excl VAT
Ground floor rear
Slough
· Terrace
· 2024
£105k
Excl VAT
Ground floor rear
Richmond upon Thames
· Semi Detached
· 2023
£72k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear
Enfield
· Terrace
· 2023
£79k
Excl VAT
Ground floor rear
Enfield
· Semi Detached
· 2024
£90k
Excl VAT
Ground floor rear
Richmond upon Thames
· Flat
· 2023
£112k
Excl VAT
Ground floor rear
Enfield
· Semi Detached
· 2023
£31k
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
Haringey
· Terrace
· 2024
£72k
Excl VAT
Ground floor rear
Wandsworth
· Semi Detached
· 2023
£69k
Excl VAT
Ground floor rear
Richmond upon Thames
· Semi Detached
· 2023
£65k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear
Waltham Forest
· End Of Terrace
· 2023
£61k
Excl VAT
Ground floor rear
Waltham Forest
· Terrace
· 2024
£89k
Excl VAT
Ground floor rear
Waltham Forest
· Terrace
· 2024
£64k
Excl VAT
Ground floor rear
Waltham Forest
· Terrace
· 2024
£100k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear
Waltham Forest
· Terrace
· 2024
£90k
Excl VAT
Ground floor rear
Waltham Forest
· Terrace
· 2024
£83k
Excl VAT
Ground floor rear
Richmond upon Thames
· Terrace
· 2023
£61k
Excl VAT
Ground floor rear
Windsor and Maidenhead
· Semi Detached
· 2022
£83k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear
Wandsworth
· Flat
· 2022
£54k
Excl VAT
Ground floor rear
Buckinghamshire
· Terrace
· 2022
£44k
Excl VAT
Ground floor rear
Wandsworth
· Terrace
· 2022
£131k
Excl VAT
Ground floor rear
Buckinghamshire
· Semi Detached
· 2024
£64k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear
East Hertfordshire
· Terrace
· 2025
£71k
Excl VAT
Ground floor rear
Waltham Forest
· Semi Detached
· 2023
£92k
Excl VAT
Ground floor rear
Wandsworth
· Terrace
· 2023
£81k
Excl VAT
Ground floor rear
Waltham Forest
· Terrace
· 2024
£88k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
