Side extension planning approval rate in Hounslow
98% of 876 decided side extension applications in Hounslow 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.
98%
Approval rate, all years, from 876 decided
876
decided side extension applications in Hounslow: 858 approved, 18 refused
Unknown
Recent rate, decided since 2022: only 1 decided, fewer than 8
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 Withdrawn applications are excluded.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 Hounslow
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 |
|---|---|---|---|
| PA/2025/0764 | 2025 | Approved | Prior approval for the demolition of a single storey rear / side extension (permitted development) |
| PA/2019/2969 | 2019 | Approved | Ground floor rear extension 6 metres deep, maximum height of 3.5 metres, 3 metres high to the eaves following demolition of part of the existing rear / side... |
| PA/2016/0934 | 2016 | Approved | Ground floor rear extension 3 metres deep, maximum height of 3.1 metres, 2.7 high to the eaves and ground floor side extension 5.7 metres deep, maximum heigh... |
| PA/2014/3702 | 2014 | Refused | Ground floor rear extension 4.175 metres deep, maximum height of 4 metres, 2.755 metres high to the eaves and associated side extension. |
| P/2007/0212 | 2007 | Refused | Certificate of Lawfulness for the proposed erection of a single storey side extension to form a garage to existing house |
| P/2007/2092 | 2007 | Refused | Certificate of lawfulness for the erection of a single storey side extension to the house. |
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 Hounslow
- Single-storey rear extension 80%, 11,847 decided
- Two-storey rear extension 99%, 1,086 decided
- Wraparound extension 95%, 374 decided
- Loft conversion and dormer 95%, 2,085 decided
- Rooflight 93%, 643 decided
- Outbuilding and garden room 82%, 188 decided
- Porch 98%, 219 decided
- Garage conversion 97%, 175 decided
- Basement 97%, 204 decided
- Window and door 99%, 405 decided