Planning application
316-318 HIGH STREET HARLINGTON UB3 5DU
Works: Extension Loft or dormer Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Single storey rear infill extension, first floor rear extension, rear dormer, front roof lights, amendments to rear fenestrations, and removal of rear external staircase.
As published by the council, reference 42416/APP/2025/3223
Application record
- Reference
- 42416/APP/2025/3223
- Type
- Full
- Status
- Approval
- Decision
- Granted As published: Permitted
- Received
- 19 Dec 2025
- Validated
- 31 Dec 2025
- Decided
- 7 Jul 2026
- Ward
- HEATHROW VILLAGES
- Postcode
- UB3 5DU
Site history
Applications at this address on the Hillingdon register
This site has had 2 applications since 2025: 2 approved, 0 refused.
-
42416/APP/2026/17 Granted
316-318 HIGH STREET HARLINGTON UB3 5DU
The continued use of the property as a 6-bedroom C4 HMO for up to 6 persons (Application for a Certificate of Lawful Development for an Existing Use).
Timeline
Dates from the published record
-
19 Dec 2025
Received by Hillingdon
-
31 Dec 2025
Validated
Checked as complete and ready for consideration.
-
7 Jul 2026
Decision issued: Permitted
-
26 Jul 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
12 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
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Open the documentsWhat this grant of permission means
Hillingdon granted permission on 7 July 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
316-318 HIGH STREET HARLINGTON UB3 5DU
The continued use of the property as a 6-bedroom C4 HMO for up to 6 persons (Application for a Certificate of Lawful Development for an Existing Use).
Granted Full applications 10 docs -
393 HIGH STREET HARLINGTON UB3 5DH
87% historically approved · decision due ~12 Mar
Subdivision of The Dower House to provide 3 residential homes (Use Class C3) along with restorative works. Partial demolition of the forecourt wall to The Dower House to enable rear site access. Erection of 18 residential homes (Use Class C3) at the rear of the site. Associated landscaping works.
Awaiting decision Full applications Demolition 90 docs -
34-36 WEST END LANE HARLINGTON UB3 5LT
Erection of a single-storey rear extension to ground floor flat and rear dormer extension with front roof lights for upper flat
Refused Full applications Extension Loft or dormer 4 docsSmall domestic -
1 & 3 GILPIN WAY HARLINGTON UB3 5LZ
87% historically approved · decision due ~30 Oct
Erection of 2 single storey garages to rear (Renewal of 72885/APP/2023/2387 and allowed at appeal APP/R5510/W/20/3250559)
Awaiting decision Full applications 6 docsSmall domestic -
31 MANOR LANE HARLINGTON UB3 5EG
Conversion of roofspace to habitable use involving raising of ridge height and a front and a rear dormer
Granted Full applications Loft or dormer Roofing 14 docs -
3 THE CRESCENT HARLINGTON MIDDLESEX UB3 5NA
Formation of vehicle crossover, installation of a dropped kerb and associated alterations.
Granted Full applications 8 docs
Other full applications
In Hillingdon
-
16034/APP/2026/217 Awaiting decision
ROSEDALE COLLEGE WOOD END GREEN ROAD HAYES UB3 2SE
Details pursuant to the discharge of Condition 27 (Fire Strategy) of planning permission ref. 16034/APP/2023/2812, dated 10-01-2025 for 'Redevelopment of the Rosedale College site to provide improved teaching and sports facilities. Proposed works to include demolition and renovation of existing buildings, the erection of 2 new buildings, a plant room, social and dining canopies, multi-use games areas, sports fields and football pitches, new parking area and provision of associated infrastructure. Pupil number to remain unchanged).'
-
3638/APP/2026/1538 Refused
FORMER REGAL CINEMA 233 HIGH STREET UXBRIDGE UB8 1LD
Change of use of existing nightclub (Sui Generis) to a banqueting suite (Sui Generis) and development of a hotel (Use Class C1) including the change of use of existing gymnasium (Use Class E) and associated landscaping, car, and cycle spaces (Part retrospective).
-
80157/APP/2026/1606 Awaiting decision
9 & 11 PINKWELL LANE HAYES UB3 1PQ
Joint application for a single storey rear & front extension. Followed by demolition of existing rear conservatory & sheds.
-
76676/APP/2026/2023 Awaiting decision
87 NORTH VIEW EASTCOTE HA5 1PX
Erection of a single storey wrap around side and rear extension
-
22901/APP/2026/2013 Awaiting decision
THE RANCHER RICKMANSWORTH ROAD HAREFIELD UB9 6JX
Erection of single storey front infill and side extension