Side extension planning approval rate in Croydon
80% of 1,975 decided side extension applications in Croydon 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.
80%
Approval rate, all years, from 1,975 decided
1,975
decided side extension applications in Croydon: 1,582 approved, 393 refused
78%
Recent rate, decided since 2022, from 1,021 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 Withdrawn applications are excluded.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 Croydon
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 |
|---|---|---|---|
| 25/02253/HSE | 2026 | Approved | Erection of single storey rear/side extension, Roof extensions includes alteration to roof and erection of rear dormer. (Amended description) |
| 25/02526/HSE | 2026 | Approved | Proposed ground floor single storey rear/side extension with slate tiles pitch roof. |
| 25/02539/HSE | 2026 | Approved | Erection of a first floor side extension to include roof alterations, construction of a dormer extension within the rear roof slope and installation of two r... |
| 25/03067/FUL | 2026 | Refused | Erection of a two storey side extension to dwellinghouse |
| 25/03619/HSE | 2026 | Refused | Erection of part first floor side extension, hip-to-gable enlargement and dormer extension to rear roof slope in connection with conversion of resultant roof... |
| 25/03818/HSE | 2026 | Refused | First floor side extension, single storey rear extension and loft conversion involving a hip to gable extension, raising the ridge height of the roof and ins... |
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 Croydon
- Single-storey rear extension 84%, 6,179 decided
- Two-storey rear extension 75%, 2,565 decided
- Wraparound extension 80%, 866 decided
- Loft conversion and dormer 75%, 1,313 decided
- Rooflight 87%, 2,238 decided
- Outbuilding and garden room 75%, 719 decided
- Porch 83%, 233 decided
- Garage conversion 93%, 335 decided
- Basement 81%, 1,059 decided
- Window and door 84%, 740 decided