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Planning application

25 WESTACOTT HAYES MIDDLESEX UB4 8AQ

Granted Hillingdon 64663/APP/2026/351 Full

Works: Extension 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

Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.00 metres, for which the maximum height would be 2.37 metres, and for which the height of the eaves would be 2.37 metres.

As published by the council, reference 64663/APP/2026/351

Application record

Reference
64663/APP/2026/351
Type
Full
Status
Prior Approval N/Req
Decision
Permitted
Received
10 Feb 2026
Validated
10 Feb 2026
Decided
7 Apr 2026
Ward
CHARVILLE 2022
Postcode
UB4 8AQ

Site history

Applications at this address on the Hillingdon register

This site has had 2 applications since 2026: 2 approved, 0 refused.

  • 64663/APP/2026/350 Granted

    25 WESTACOTT HAYES MIDDLESEX UB4 8AQ

    Conversion of roof space to habitable use to include a rear dormer, 2 front roof lights, conversion of roof from hip to gable end with new gable end window, and removal of chimney (Application for a Certificate of Lawful Development for a Proposed Development).

    Decided 25 Feb 2026 Full applications

Timeline

Dates from the published record

  1. 10 Feb 2026

    Received by Hillingdon

  2. 7 Apr 2026

    Decision issued: Permitted

  3. 12 Aug 2026

    Added to PlanIndex

Documents

Plans, drawings, consultee responses and the officer's report

7 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.

Trade members open them from here.

Open the documents

What this grant of permission means

Hillingdon granted permission on 7 April 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 500 metres

  • 25 WESTACOTT HAYES MIDDLESEX UB4 8AQ

    64663/APP/2026/350 Submitted 10 Feb 2026 0m away

    Conversion of roof space to habitable use to include a rear dormer, 2 front roof lights, conversion of roof from hip to gable end with new gable end window, and removal of chimney (Application for a Certificate of Lawful Development for a Proposed Development).

    Granted Full applications Loft or dormer Windows or glazing 6 docs

  • 22 PARK ROAD HAYES UB4 8JN

    78540/APP/2025/2872 Submitted 13 Nov 2025 99m away

    86% historically approved · decision due ~8 Jan

    Variation of Conditions 2 (Approved plans), 9 (Windows and Doors) and 10 (Extensions, roof extensions and outbuildings) of planning permission ref. 78540/APP/2024/229, dated 17-05-2024 (Demolition of existing dwelling and garage, Erection of a 4-bedroom 8 x persons dwelling) to the front and elevations of the dwelling to accommodate new windows on the flanks of the dwelling and new Velux windows on the side and rear pitches of the roof and conversion of loft to habitable use.

    At appeal Extension Loft or dormer +2
    Domestic

  • 22 PARK ROAD HAYES UB4 8JN

    78540/APP/2026/1637 Submitted 30 Jun 2026 100m away

    Variation of Condition 2 (Approved plans), Condition 9 (Windows and Doors) and Condition 10 (outbuildings) of planning permission ref. 78540/APP/2024/229, dated 17-05-2024 (Demolition of existing dwelling and garage. Erection of a 4-bedroom 8 x persons dwelling.) to install additional fenestration and associated internal alterations enabling the approved roof space to function as habitable

    Granted Full applications Demolition Windows or glazing 12 docs
    Domestic

  • 16 CAVENDISH CLOSE HAYES UB4 8AJ

    76331/APP/2021/1387 Submitted 6 Apr 2021 109m away

    Conversion of roofspace to habitable use to include a rear dormer and 2 front rooflights

    Refused Full applications Loft or dormer 6 docs

  • 25 PARK LANE HAYES MIDDLESEX UB4 8AB

    60461/APP/2023/1166 Submitted 20 Apr 2023 133m away

    Conversion of roof space to habitable use to include a rear dormer with a hip to gable extension, gable end window, 3 front roof lights and removal of chimney (Application for a Certificate of Lawful Development for a Proposed Development)

    Granted Full applications Extension Loft or dormer +1 6 docs

  • 70 PARK LANE HAYES UB4 8AB

    79914/APP/2026/345 Submitted 10 Feb 2026 133m away

    Erection of a dwellinghouse with associated parking and bin storage, following demolition of garage.

    Granted Full applications Demolition 7 docs
    Domestic

In Hillingdon

  • 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