Garage conversion planning approval rate in Hillingdon
89% of 425 decided garage conversion applications in Hillingdon 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.
89%
Approval rate, all years, from 425 decided
425
decided garage conversion applications in Hillingdon: 379 approved, 46 refused
94%
Recent rate, decided since 2022, from 251 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 Withdrawn applications are excluded.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 garage conversion decisions in Hillingdon
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 |
|---|---|---|---|
| 50959/APP/2025/2919 | 2026 | Approved | Conversion of existing internal garage into habitable use 12 PAMELA GARDENS |
| 76723/APP/2025/3094 | 2026 | Approved | Conversion of internal garage to habitable use 17 HIGHFIELD DRIVE |
| 76960/APP/2025/1084 | 2026 | Approved | Conversion of garage to habitable space with the erection of a front porch (amended description and location plan 09.01.26) 15 Cowslip Close |
| 9762/APP/2026/214 | 2026 | Refused | Non-material amendment to planning permission ref. 9762/APP/2025/1162, dated 31-10-25 (Conversion of attached garage to habitable accommodation and erection... 14 GATEHILL ROAD |
| 17031/APP/2025/984 | 2025 | Refused | Erection of a single storey first floor extension to the side, conversion of integral garages to habitable accommodation 48 LOTHIAN AVENUE |
| 35039/APP/2024/1926 | 2024 | Refused | Conversion of garage into habitable use including raising of roof and installation of new window. Amendments to front facing fenestration including new windo... 56 THE GREENWAY |
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 Hillingdon
- Single-storey rear extension 83%, 7,240 decided
- Two-storey rear extension 66%, 2,756 decided
- Wraparound extension 79%, 844 decided
- Side extension 71%, 1,686 decided
- Loft conversion and dormer 74%, 585 decided
- Rooflight 89%, 2,768 decided
- Outbuilding and garden room 81%, 1,230 decided
- Porch 75%, 374 decided
- Basement 86%, 432 decided
- Window and door 86%, 496 decided