Skip to content
PlanIndex Get alerts
Menu

Planning application

316-318 HIGH STREET HARLINGTON UB3 5DU

Granted Hillingdon 42416/APP/2025/3223 Full

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.

  • 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).

    Decided 4 Jun 2026 Full applications

Timeline

Dates from the published record

  1. 19 Dec 2025

    Received by Hillingdon

  2. 31 Dec 2025

    Validated

    Checked as complete and ready for consideration.

  3. 7 Jul 2026

    Decision issued: Permitted

  4. 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What 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

    42416/APP/2026/17 Submitted 5 Jan 2026 50 yards away

    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

    6648/APP/2026/120 Submitted 15 Jan 2026 100 yards away

    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

    80121/APP/2026/1426 Submitted 9 Jun 2026 100 yards away

    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 docs
    Small domestic
  • 1 & 3 GILPIN WAY HARLINGTON UB3 5LZ

    72885/APP/2026/2151 Submitted 4 Sep 2026 100 yards away

    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 docs
    Small domestic
  • 31 MANOR LANE HARLINGTON UB3 5EG

    74228/APP/2021/2424 Submitted 16 Jun 2021 200 yards away

    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

    75461/APP/2023/476 Submitted 20 Feb 2023 200 yards away

    Formation of vehicle crossover, installation of a dropped kerb and associated alterations.

    Granted Full applications 8 docs

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).'

    Received 26 Jan, published by the council 26 Jul 2026 Full applications
  • 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).

    Received 22 Jun, published by the council 3 Sep 2026 Full applications
  • 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.

    Received 29 Jun, published by the council 23 Aug 2026 Full applications
  • 76676/APP/2026/2023 Awaiting decision

    87 NORTH VIEW EASTCOTE HA5 1PX

    Erection of a single storey wrap around side and rear extension

    Received 13 Aug, published by the council 3 Sep 2026 Full applications
  • 22901/APP/2026/2013 Awaiting decision

    THE RANCHER RICKMANSWORTH ROAD HAREFIELD UB9 6JX

    Erection of single storey front infill and side extension

    Received 12 Aug, published by the council 3 Sep 2026 Full applications