3 THE CRESCENT HARLINGTON MIDDLESEX UB3 5NA

1. 20 Feb 2023

   Received by Hillingdon

2. 17 Apr 2023

   Decision issued: Permitted

3. 23 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

• OAKLEY COURT 80A THE CRESCENT HARLINGTON UB3 5NS

  46970/APP/2021/2103 Submitted 24 May 2021 122m away

  Raising of height of and alterations to roof of 1-6 Oakley Court to form a mansard roof with dormer windows at second floor level to provide 1 x 1 bedroom and 1 x 2 bedroom flats with associated provision of additional parking and refuse/recycle storage

  Refused Full applications New dwelling Loft or dormer +1 14 docs

• 96K WEST END LANE HARLINGTON UB3 5LX

  69598/APP/2026/951 Submitted 15 Apr 2026 123m away

  87% historically approved · decision due ~10 Jun

  Erection of a single storey rear extension, and a front porch.

  Decided Full applications Extension 5 docs
  Small domestic

• 96K WEST END LANE HARLINGTON UB3 5LX

  69598/APP/2025/2440 Submitted 18 Sep 2025 123m away

  86% historically approved · decision due ~13 Nov

  Erection of two storey rear extension, part single storey and two storey side extension.

  Awaiting decision Extension
  Small domestic

• 34-36 WEST END LANE HARLINGTON UB3 5LT

  80121/APP/2026/1426 Submitted 9 Jun 2026 179m 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

• 316-318 HIGH STREET HARLINGTON UB3 5DU

  42416/APP/2026/17 Submitted 5 Jan 2026 195m 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

• 316-318 HIGH STREET HARLINGTON UB3 5DU

  42416/APP/2025/3223 Submitted 19 Dec 2025 195m away

  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 docs
  Small domestic

• 80149/APP/2026/1572 Granted

  14 LADYGATE LANE RUISLIP HA4 7QU

  Erection of single storey side and rear wraparound extension, a front porch, amendments to fenestration and roof lights to the front, side and rear sloped roof, following the removal of the rear chimney and garden shed. (Description Amended)

  24 Jun 2026 Full applications
• 79879/APP/2026/1749 Granted

  21 NORTH AVENUE HAYES UB3 2JE

  Erection of part single storey, part double storey rear extension

  13 Jul 2026 Full applications
• 74889/APP/2026/1363 Granted

  32 MANOR ROAD HAYES UB3 2DG

  Erection of a first-floor rear extension.

  1 Jun 2026 Full applications
• 53073/APP/2026/1645 Granted

  50 MINET DRIVE HAYES UB3 3JW

  Erection of a part single storey, part two storey extension to the rear

  1 Jul 2026 Full applications
• 80172/APP/2026/1717 Refused

  6 SQUIRRELS TRADING ESTATE VIVEASH CLOSE HAYES UB3 4RZ

  Change of use from Class B8 to Class E retail

  8 Jul 2026 Full applications