Planning application
149 HERLWYN AVENUE RUISLIP
Works: Extension Loft or dormer Domestic
Read from the description, not a valuation. How we read the register
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Erection of rear extension, hip-to-gable roof conversion and rear dormer, and conversion of property from Class C3 (dwellinghouse) to Class C4 (small HMO) for up to 6 persons (Part retrospective application).
As published by the council, reference 19188/APP/2025/3239
Application record
- Reference
- 19188/APP/2025/3239
- Status
- Refusal
- Received
- 23 Dec 2025
Site history
Applications at this address on the Hillingdon register
This site has had 2 applications since 2025: 1 approved, 0 refused.
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19188/APP/2026/820 Granted
149 HERLWYN AVENUE RUISLIP
Conversion of roof space to habitable use to include a rear dormer, conversion of roof from hip to gable end, erection of a single storey extension to the rear (retrospective application)
Timeline
Dates from the published record
-
23 Dec 2025
Received by Hillingdon
-
7 Aug 2026
Added to PlanIndex
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Decision
Awaiting decision
Decision expected by 17 February 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Hillingdon took a median of 58 days over the applications it decided in the last year.
What happens while it is decided
This application is with Hillingdon for determination, against a statutory target of eight weeks. Over the last year Hillingdon's median decision took 58 days. More in our guide to how long planning decisions take.
About this record
The published feed does not state which type of application this is; the register entry on Hillingdon's portal will say. Our guide explains the common types.