Outbuilding and garden room planning approval rate in Hounslow
82% of 188 decided outbuilding and garden room 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.
82%
Approval rate, all years, from 188 decided
188
decided outbuilding and garden room applications in Hounslow: 154 approved, 34 refused
Unknown
Recent rate, decided since 2022: no 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 Withdrawn applications are excluded. The eight-record threshold is a display rule, not a guarantee that a sample is statistically reliable.
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.
Coverage for this project type
Dated records in this archive span 1991 to 2020. 0 of 188 decided records have no year recorded. Coverage may have gaps within the date range.
Recent coverage is unavailable. We have no dated records from 2022 onwards for this project type in Hounslow. This does not mean the council received no applications.
These project categories can include different application routes and proposals combining several kinds of work. Read the proposal and decision type before comparing it with your project.
Check planning requirements in Hounslow, or read about permitted development in Hounslow. An approval rate does not decide which route your property qualifies for.
Example outbuilding and garden room 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.
Search Hounslow's planning register using the references below. Descriptions may be shortened; read the complete proposal and decision notice.
| Reference | Year | Decision | Application |
|---|---|---|---|
| PIP/2020/3298 | 2020 | Refused | Application for Permission in Principle for the the erection of a minimum/maximum of one house on land to the rear of 35 Freun Road replacing existing outb... |
| P/2007/0201 | 2008 | Approved | Demolition of outbuilding to Public House |
| P/2007/2591 | 2008 | Approved | Retention of an outbuilding to be used as a gym room, rest area / play area with shower facilities in rear garden to house |
| P/2007/3383 | 2008 | Approved | Certificate of Lawfulness of existing development for a detached outbuilding in the rear garden |
| P/2006/3780 | 2007 | Refused | Certificate of Lawfulness for the retention of single storey detached outbuilding for use as living accomodation |
| P/2007/0187 | 2007 | Refused | Certificate of lawfulness for the proposed erection of a single storey outbuilding |
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
- Side extension 98%, 876 decided
- Loft conversion and dormer 95%, 2,085 decided
- Rooflight 93%, 643 decided
- Porch 98%, 219 decided
- Garage conversion 97%, 175 decided
- Basement 97%, 204 decided
- Window and door 99%, 405 decided