Ground floor side infill and internal alterations
Lambeth
· Flat
· 2023
£107k
Excl VAT
Average build cost for a ground floor side infill extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
2-4%
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
80%
The average approval rate of projects in the last 2 years.
Time to approval
66 days
The average number of days taken to approve a project in the last 2 years.
Number approved
87,354
The number of applications approved in the last 2 years.
Ground floor side infill
Hackney
· Terrace
· 2024
£87k
Excl VAT
Average build cost for a ground floor side infill extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
2-4%
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
80%
The average approval rate of projects in the last 2 years.
Time to approval
66 days
The average number of days taken to approve a project in the last 2 years.
Number approved
87,354
The number of applications approved in the last 2 years.
Ground floor side infill and internal alterations
Southwark
· Flat
· 2022
£96k
Excl VAT
Average build cost for a ground floor side infill extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
2-4%
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
80%
The average approval rate of projects in the last 2 years.
Time to approval
66 days
The average number of days taken to approve a project in the last 2 years.
Number approved
87,354
The number of applications approved in the last 2 years.
Ground floor side infill
Westminster
· Flat
· 2023
£37k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Average build cost for a ground floor side infill extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
2-4%
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
80%
The average approval rate of projects in the last 2 years.
Time to approval
66 days
The average number of days taken to approve a project in the last 2 years.
Number approved
87,354
The number of applications approved in the last 2 years.
Ground floor side infill
Lambeth
· Semi Detached
· 2023
£118k
Excl VAT
Average build cost for a ground floor side infill extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
2-4%
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
80%
The average approval rate of projects in the last 2 years.
Time to approval
66 days
The average number of days taken to approve a project in the last 2 years.
Number approved
87,354
The number of applications approved in the last 2 years.
Ground floor side infill
Lambeth
· Flat
· 2024
£76k
Excl VAT
Average build cost for a ground floor side infill extension is £70k - £90k
Build cost
£70k - £90k
The average cost of a project in the last 2 years.
Value-add
2-4%
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
80%
The average approval rate of projects in the last 2 years.
Time to approval
66 days
The average number of days taken to approve a project in the last 2 years.
Number approved
87,354
The number of applications approved in the last 2 years.
Ground floor side infill, internal alterations & facade alterations
Hackney
· Terrace
· 2024
£149k
Excl VAT
Ground floor side infill
Southwark
· Terrace
· 2022
£114k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor side infill
Hackney
· Terrace
· 2024
£61k
Excl VAT
Ground floor side infill
Westminster
· Terrace
· 2022
£69k
Excl VAT
Ground floor side infill
Lambeth
· Terrace
· 2023
£99k
Excl VAT
Ground floor side infill and ground floor wraparound
Lambeth
· Terrace
· 2022
£98k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor side infill
Wandsworth
· Flat
· 2024
£88k
Excl VAT
Ground floor side infill
Lambeth
· End Of Terrace
· 2024
£83k
Excl VAT
Ground floor side infill
Lambeth
· Terrace
· 2024
£92k
Excl VAT
Ground floor side infill
Lambeth
· Terrace
· 2024
£82k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor rear, ground floor side infill & internal alterations
Haringey
· Terrace
· 2023
£115k
Excl VAT
Loft main dormer and ground floor side infill
Lambeth
· Terrace
· 2023
£153k
Excl VAT
Ground floor side infill
Tower Hamlets
· Terrace
· 2023
£65k
Excl VAT
Ground floor side infill
Southwark
· Terrace
· 2024
£151k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor side infill, internal alterations & facade alterations
Southwark
· Terrace
· 2022
£168k
Excl VAT
Ground floor side infill
Haringey
· Terrace
· 2023
£102k
Excl VAT
Ground floor side infill
Hammersmith and Fulham
· Flat
· 2023
£78k
Excl VAT
Ground floor side infill and Loft L shaped dormer
Wandsworth
· Terrace
· 2023
£210k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor side infill and Loft L shaped dormer
Wandsworth
· Terrace
· 2022
£263k
Excl VAT
Ground floor side infill
Southwark
· Terrace
· 2024
£87k
Excl VAT
Ground floor side infill
Southwark
· Terrace
· 2022
£49k
Excl VAT
Ground floor side infill
Wandsworth
· End Of Terrace
· 2022
£99k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor side infill and internal alterations
Lambeth
· Flat
· 2023
£73k
Excl VAT
Ground floor side infill and internal alterations
Waltham Forest
· End Of Terrace
· 2023
£79k
Excl VAT
Ground floor side infill
Wandsworth
· Flat
· 2023
£37k
Excl VAT
Ground floor side infill and internal alterations
Lewisham
· Terrace
· 2024
£140k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor side infill and internal alterations
Newham
· Terrace
· 2022
£87k
Excl VAT
Ground floor side infill
Wandsworth
· Terrace
· 2024
£138k
Excl VAT
Ground floor side infill and Loft L shaped dormer
Waltham Forest
· Terrace
· 2024
£169k
Excl VAT
Ground floor side infill and internal alterations
Waltham Forest
· Terrace
· 2022
£83k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor side infill and internal alterations
Newham
· Terrace
· 2024
£65k
Excl VAT
Loft main dormer and ground floor side infill
Wandsworth
· Terrace
· 2023
£187k
Excl VAT
Ground floor side infill and ground floor wraparound
Waltham Forest
· Terrace
· 2023
£65k
Excl VAT
Ground floor side infill, internal alterations & Loft L shaped dormer
Wandsworth
· Terrace
· 2024
£154k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor side infill and internal alterations
Waltham Forest
· Terrace
· 2024
£134k
Excl VAT
Ground floor side infill
Lewisham
· End Of Terrace
· 2023
£70k
Excl VAT
Ground floor side infill and internal alterations
Ealing
· Flat
· 2023
£91k
Excl VAT
Ground floor side infill
Greenwich
· Terrace
· 2023
£58k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
Ground floor side infill
Wandsworth
· Detached
· 2023
£87k
Excl VAT
Ground floor side infill
Waltham Forest
· Terrace
· 2023
£75k
Excl VAT
Ground floor side infill
Lewisham
· Terrace
· 2022
£89k
Excl VAT
Ground floor side infill and Loft L shaped dormer
Wandsworth
· Terrace
· 2024
£185k
Excl VAT
AI images
Images are AI-generated for homeowner privacy
