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Planning application

17 DORSET AVENUE HAYES UB4 8NR

Granted Hillingdon 79813/APP/2025/3031 Full

Works: Extension Loft or dormer

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Conversion of roof space to habitable use to include a rear dormer, Hip to gable extension, 3x front roof lights, and erection of outbuilding to rear garden (Application for a Certificate of Lawful Development for a Proposed Development).

As published by the council, reference 79813/APP/2025/3031

Application record

Reference
79813/APP/2025/3031
Type
Full
Status
Approval
Decision
Permitted
Received
2 Dec 2025
Validated
9 Dec 2025
Decided
19 Jan 2026
Ward
CHARVILLE 2022
Postcode
UB4 8NR

Timeline

Dates from the published record

  1. 2 Dec 2025

    Received by Hillingdon

  2. 9 Dec 2025

    Validated

    Checked as complete and ready for consideration.

  3. 19 Jan 2026

    Decision issued: Permitted

  4. 12 Aug 2026

    Added to PlanIndex

Documents

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

5 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 a grant of permission means

The process from here

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.

About full applications applications

How this application type works

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

Nearby applications

Within 500 metres

  • 17 DORSET AVENUE HAYES UB4 8NR

    79813/APP/2025/3032 Submitted 2 Dec 2025 0m away

    Erection of front porch, and part single storey part double storey rear extension.

    Granted Full applications Extension 6 docs
    Small domestic

  • HEDGEWOOD SPECIAL SCHOOL WEYMOUTH ROAD HAYES UB4 8NF

    3898/APP/2021/2048 Submitted 21 May 2021 85m away

    Installation of two double modular classrooms units for a temporary period of 5 years and expansion of staff car park with associated landscape works, including removal and relocation of existing temporary structures

    Granted Full applications 17 docs

  • HEDGEWOOD SCHOOL WEYMOUTH ROAD HAYES UB4 8NF

    3898/APP/2021/2842 Submitted 20 Jul 2021 85m away

    Non-material amendment to planning permission Ref: 3898/APP/2021/2048 dated 19/07/2021 (Installation of two double modular classrooms units for a temporary period of 5 years and expansion of staff car park with associated landscape works, including removal and relocation of existing temporary structures) in order to amend the wording of Condition 4

    Granted Full applications 9 docs

  • 19 ADELPHI CRESCENT HAYES UB4 8LZ

    74902/APP/2019/3302 Submitted 9 Oct 2019 106m away

    Single storey rear extension and conversion of roof space to habitable use to include a rear dormer, 2 front rooflights and conversion of roof from hip to gable end (Application for a Certificate of Lawful Development for a Proposed Development)

    Granted Full applications Extension Loft or dormer 11 docs
    Small domestic

  • 21 ADELPHI CRESCENT HAYES UB4 8LZ

    78333/APP/2026/240 Submitted 28 Jan 2026 106m away

    non-material amendment to planning permission ref. 78333/APP/2024/723, dated 05/06/2024 (Erection of a single storey detached building to the rear for use as a residential annexe) to add a Shower and WC

    Granted Full applications 7 docs
    Small domestic

  • 18 ADELPHI CRESCENT HAYES UB4 8LZ

    72688/APP/2025/2960 Submitted 24 Nov 2025 106m away

    Conversion of a single dwelling house into 2no. self contained Flats.

    Refused Full applications New dwelling 21 docs
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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