Loft main dormer
Reading
· Semi Detached
· 2024
£101k
· Jul '24
Average build cost for a loft extension is £90k - £110k
Build cost
£90k - £110k
The average cost of a project in the last 2 years.
Value-add
9-11%
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
87%
The average approval rate of projects in the last 2 years.
Time to approval
64 days
The average number of days taken to approve a project in the last 2 years.
Number approved
30,257
The number of applications approved in the last 2 years.
Loft main dormer
Runnymede
· Bungalow
· 2025
£114k
· Jul '24
Average build cost for a loft extension is £90k - £110k
Build cost
£90k - £110k
The average cost of a project in the last 2 years.
Value-add
9-11%
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
87%
The average approval rate of projects in the last 2 years.
Time to approval
64 days
The average number of days taken to approve a project in the last 2 years.
Number approved
30,257
The number of applications approved in the last 2 years.
Loft main dormer
Hillingdon
· Semi Detached
· 2024
£97k
· Mar '24
Average build cost for a loft extension is £90k - £110k
Build cost
£90k - £110k
The average cost of a project in the last 2 years.
Value-add
9-11%
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
87%
The average approval rate of projects in the last 2 years.
Time to approval
64 days
The average number of days taken to approve a project in the last 2 years.
Number approved
30,257
The number of applications approved in the last 2 years.
Loft hip to gable with main dormer
Hillingdon
· Semi Detached
· 2024
£95k
· Nov '24
AI images
Images are AI-generated for homeowner privacy
Average build cost for a loft extension is £90k - £110k
Build cost
£90k - £110k
The average cost of a project in the last 2 years.
Value-add
9-11%
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
87%
The average approval rate of projects in the last 2 years.
Time to approval
64 days
The average number of days taken to approve a project in the last 2 years.
Number approved
30,257
The number of applications approved in the last 2 years.
Loft main dormer
Ealing
· Terrace
· 2022
£87k
· Nov '22
Average build cost for a loft extension is £90k - £110k
Build cost
£90k - £110k
The average cost of a project in the last 2 years.
Value-add
9-11%
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
87%
The average approval rate of projects in the last 2 years.
Time to approval
64 days
The average number of days taken to approve a project in the last 2 years.
Number approved
30,257
The number of applications approved in the last 2 years.
Loft hip to gable with main dormer
Brent
· Semi Detached
· 2024
£103k
· Mar '24
Average build cost for a loft extension is £90k - £110k
Build cost
£90k - £110k
The average cost of a project in the last 2 years.
Value-add
9-11%
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
87%
The average approval rate of projects in the last 2 years.
Time to approval
64 days
The average number of days taken to approve a project in the last 2 years.
Number approved
30,257
The number of applications approved in the last 2 years.
Loft L shaped dormer
Richmond upon Thames
· Terrace
· 2024
£78k
· Nov '23
Loft main dormer
Kingston upon Thames
· Terrace
· 2025
£60k
· Sep '24
AI images
Images are AI-generated for homeowner privacy
Loft L shaped dormer
Kingston upon Thames
· Semi Detached
· 2025
£83k
· Sep '24
Loft L shaped dormer
Brent
· Terrace
· 2022
£104k
· Jun '22
Loft main dormer
Kingston upon Thames
· Semi Detached
· 2022
£96k
· Feb '22
Loft main dormer
Camden
· Flat
· 2023
£66k
· Apr '23
AI images
Images are AI-generated for homeowner privacy
Loft main dormer
Barnet
· Terrace
· 2023
£85k
· May '23
Loft L shaped dormer
Epsom and Ewell
· Semi Detached
· 2024
£74k
· Nov '23
Loft outrigger dormer
Merton
· Detached
· 2023
£54k
· Oct '22
Loft hip to gable with main dormer
Barnet
· Terrace
· 2022
£71k
· Mar '22
AI images
Images are AI-generated for homeowner privacy
Loft main dormer and loft roof terrace
Camden
· Terrace
· 2024
£87k
· Feb '24
Loft main dormer
Wandsworth
· Terrace
· 2024
£105k
· Aug '24
Loft L shaped dormer and loft roof terrace
Wandsworth
· Flat
· 2023
£98k
· Feb '23
Loft main dormer
Wandsworth
· Terrace
· 2022
£74k
· Jan '22
AI images
Images are AI-generated for homeowner privacy
Loft L shaped dormer
Sutton
· Terrace
· 2022
£79k
· Feb '22
Loft main dormer
Merton
· Terrace
· 2022
£66k
· Feb '22
Loft main dormer
Enfield
· End Of Terrace
· 2024
£91k
· Dec '24
Loft L shaped dormer
Lambeth
· Terrace
· 2024
£146k
· Feb '24
AI images
Images are AI-generated for homeowner privacy
Loft main dormer
Lambeth
· Terrace
· 2023
£64k
· Jun '23
Loft L shaped dormer
Haringey
· Terrace
· 2024
£110k
· Nov '24
Loft L shaped dormer
Enfield
· Terrace
· 2024
£110k
· Mar '24
Loft roof terrace
Southwark
· Flat
· 2025
£23k
· Sep '25
AI images
Images are AI-generated for homeowner privacy
Loft L shaped dormer
Southwark
· Terrace
· 2024
£110k
· Jun '23
Loft main dormer
Southwark
· Semi Detached
· 2025
£75k
· Apr '25
Loft L shaped dormer
Southwark
· Terrace
· 2024
£93k
· Apr '23
Loft hip to gable with main dormer
Southwark
· Semi Detached
· 2022
£78k
· Apr '22
AI images
Images are AI-generated for homeowner privacy
Loft L shaped dormer
Southwark
· End Of Terrace
· 2023
£76k
· Dec '23
Loft main dormer
Southwark
· Terrace
· 2024
£59k
· Jul '24
Loft main dormer
Waltham Forest
· Flat
· 2023
£87k
· Jun '23
Loft hip to gable with main dormer
Bromley
· Semi Detached
· 2024
£78k
· Mar '24
AI images
Images are AI-generated for homeowner privacy
Loft L shaped dormer
Croydon
· Terrace
· 2023
£96k
· Jan '23
Loft main dormer
Newham
· End Of Terrace
· 2023
£77k
· Jun '23
Loft L shaped dormer
Waltham Forest
· Flat
· 2024
£92k
· Jan '24
Loft main dormer
Lewisham
· Terrace
· 2023
£115k
· Dec '22
AI images
Images are AI-generated for homeowner privacy
Loft L shaped dormer
Greenwich
· Terrace
· 2024
£146k
· Mar '25
Loft hip to gable with main dormer
Greenwich
· Terrace
· 2024
£113k
· Aug '24
Loft main dormer
Lewisham
· Terrace
· 2024
£60k
· Jan '24
Loft hip to gable with main dormer
Greenwich
· Semi Detached
· 2024
£72k
· May '24
AI images
Images are AI-generated for homeowner privacy
Loft main dormer
Worthing
· Semi Detached
· 2024
£105k
· Aug '24
Loft main dormer
Greenwich
· Terrace
· 2023
£69k
· Feb '23
Loft main dormer
Bromley
· Semi Detached
· 2024
£94k
· Apr '24
Loft hip to gable with main dormer
Bromley
· Bungalow
· 2024
£106k
· Mar '24
AI images
Images are AI-generated for homeowner privacy
