Side extension planning approval rate in Kensington and Chelsea
90% of 270 decided side extension applications in Kensington and Chelsea 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.
90%
Approval rate, all years, from 270 decided
270
decided side extension applications in Kensington and Chelsea: 243 approved, 27 refused
91%
Recent rate, decided since 2022, from 183 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 Withdrawn applications are excluded.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 Kensington and Chelsea
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 |
|---|---|---|---|
| CON/24/08342 | 2025 | Approved | Details required by condition 3a (submission of details-wheelchair platform lift) of planning permission 23/03845 (Alterations and extensions including reins... 5 The Boltons, LONDON, SW10 9TB |
| CON/24/08343 | 2025 | Approved | Details required by condition 3a (submission of details-wheelchair platform lift) of listed building consent 23/03846 (Alterations and extensions including r... 5 The Boltons, LONDON, SW10 9TB |
| CON/25/00214 | 2025 | Approved | Details required by Condition 9 (Flood Risk Assessment/Sustainable Drainage Systems Strategy) of planning permission PP/22/02406 (Alterations to side return... 17 Kelfield Gardens, LONDON, W10 6NA |
| LB/25/02785 | 2025 | Refused | Construction of two-storey side extension with associated works 14 Pelham Crescent, LONDON, SW7 2NP |
| PP/25/01245 | 2025 | Refused | Addition of first floor side extension 21 Victoria Gardens, LONDON, W11 3PE |
| PP/25/02784 | 2025 | Refused | Construction of two-storey side extension with associated works 14 Pelham Crescent, LONDON, SW7 2NP |
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 Kensington and Chelsea
- Single-storey rear extension 88%, 1,593 decided
- Two-storey rear extension 88%, 178 decided
- Wraparound extension 77%, 47 decided
- Loft conversion and dormer 82%, 1,062 decided
- Rooflight 92%, 1,447 decided
- Outbuilding and garden room 87%, 247 decided
- Porch 94%, 192 decided
- Garage conversion 100%, 51 decided
- Basement 90%, 3,371 decided
- Window and door 93%, 4,500 decided