Planning application
316-318 HIGH STREET HARLINGTON UB3 5DU
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
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).
As published by the council, reference 42416/APP/2026/17
Application record
- Reference
- 42416/APP/2026/17
- Type
- Full
- Status
- Approval
- Decision
- Granted As published: Permitted
- Received
- 5 Jan 2026
- Validated
- 23 Feb 2026
- Decided
- 4 Jun 2026
- Ward
- H/ROW VILLAGES 2022
- 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/2025/3223 Granted
316-318 HIGH STREET HARLINGTON UB3 5DU
Single storey rear infill extension, first floor rear extension, rear dormer, front roof lights, amendments to rear fenestrations, and removal of rear external staircase.
Timeline
Dates from the published record
-
5 Jan 2026
Received by Hillingdon
-
23 Feb 2026
Validated
Checked as complete and ready for consideration.
-
4 Jun 2026
Decision issued: Permitted
-
12 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
10 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.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Hillingdon granted permission on 4 June 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
Single storey rear infill extension, first floor rear extension, rear dormer, front roof lights, amendments to rear fenestrations, and removal of rear external staircase.
Granted Full applications Extension Loft or dormer 12 docsSmall domestic -
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
-
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
-
76795/APP/2025/2062 Awaiting decision
LAND AT YIEWSLEY LIBRARY & FORMER YIEWSLEY POOL FALLING LANE OTTERFIELD ROAD YIEWSLEY UB7 8AB
Details pursuant to the partial discharge of Conditions 13 (Energy Statement), 14 (Energy Monitoring Plan) and 31 (Drainage Design) for the Falling Lane Site only of planning permission ref. 76795/APP/2023/2503 dated 14-09-2023 for 'Demolition of existing Yiewsley Library Building and the erection of a new residential building on the Yiewsley Library site (Falling Lane) and the erection of a new mixed use building on the former Yiewsley Swimming Pool site (Otterfield Road), with a replacement library at ground floor level, residential uses above and new pedestrian access off of the High Street'. Detailed Description: Demolition of existing Yiewsley Library Building and the erection of a 5-storey residential building, comprising 50 dwellings, with 28 undercroft parking spaces (13 for residential and 15 for use by Rabbsfarm Primary School). The Otterfield Road site proposes the erection of a 5-storey building, comprising 45 dwellings, with 25 car parking spaces (23 for residential and 2 for library users)).