Side extension planning approval rate in Lambeth
85% of 677 decided side extension applications in Lambeth were approved.
Checked against 20.6 million UK planning applications on file across 420 planning authorities. Approval rates from 2,343,419 decisions we classified across 181 councils in England.
A similar project nearby can help you understand the council's decisions. Its outcome does not establish what will be acceptable at your address.
85%
Approval rate, all years, from 677 decided
677
decided side extension applications in Lambeth: 575 approved, 102 refused
81%
Recent rate, decided since 2022, from 252 decided
How to read these rates
These are historical outcomes for the applications in our archive, not the chance of approval for your property. Compare the same project type and read the decided count alongside each percentage.
About the planning data
Rate = approved divided by approved plus refused, using the decisions in our classified archive. Rates are withheld as unknown where fewer than 8 records of that project type were decided. Withdrawn applications are excluded.
Recent means records dated 2022 or later. Records without a year are excluded from the recent rate but remain in the all-years figure. Historical coverage varies by council, and duplicate application references may remain in the archive.
Approval rates from 2,343,419 decisions we classified across 181 councils in England. The wider 20.6 million application catalogue is accessible through PlanIT; it is not the dataset used to calculate these percentages.
Read the full methodology and coverage notes.
Project types and outcomes are classified from council records. Check the original application and decision notice before relying on an individual example. A page rebuild does not mean every council record has just been refreshed.
Example side extension decisions in Lambeth
These examples deliberately include approved and refused applications where available. They are not a representative sample or a list of the latest decisions. Look up each reference on the council's planning search to read the plans and decision notice.
| Reference | Year | Decision | Application |
|---|---|---|---|
| 24/00675/FUL | 2025 | Approved | Conversion of two apartments into three apartments, involving the erection of a single storey ground floor rear/side extension with a courtyard, and rear ext... 26 Bournevale Road London Lambeth SW16 2BA |
| 24/01813/FUL | 2025 | Approved | Conversion of the existing single dwelling across 50 and 52 Lynette Avenue into 2 self-contained dwellings, together with alterations and extensions to 50 Ly... 50 & 52 Lynette Avenue |
| 24/02922/VOC | 2025 | Approved | Variation of Condition 2 (Plans) of planning permission 21/04793/FUL (Erection of a single storey rear extension and a side extension to the ground floor fla... |
| 21/03303/FUL | 2024 | Refused | Conversion of lower ground floor flat and ground and first floor flat into four self-contained flats, involving the erection of a mansard roof extension, and... |
| 23/03676/FUL | 2024 | Refused | Erection of a single story ground floor side extension and installation of replacement windows and rooflights. 1 Spenser Road London Lambeth SE24 0NS |
| 23/03811/NMC | 2024 | Refused | Application for a Non-Material Amendment following a grant of planning permission ref. 21/02459/FUL (Retention of E(a) retail use on part of the ground floor... 27 Clapham High Street London Lambeth SW4 7TR |
About the planning data
Checked against 20.6 million UK planning applications on file across 420 planning authorities. Approval rates from 2,343,419 decisions we classified across 181 councils in England.
Other project types in Lambeth
- Single-storey rear extension 82%, 3,310 decided
- Two-storey rear extension 77%, 359 decided
- Wraparound extension 84%, 695 decided
- Loft conversion and dormer 76%, 1,116 decided
- Rooflight 84%, 2,205 decided
- Outbuilding and garden room 77%, 190 decided
- Porch 90%, 77 decided
- Garage conversion 87%, 63 decided
- Basement 86%, 2,031 decided
- Window and door 83%, 2,107 decided