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England · Local authority

London Borough of Hillingdon
Planning applications.

Explore collected planning applications and decisions for London Borough of Hillingdon. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates
24,912Searchable applications
442Recorded as pending
80%Approval rate · 23,162 approved or refused records
4,700Refused applications

18,462 approved · 4,700 refused · 963 withdrawn. Received dates in our records: 3 Mar 2020 to 5 Oct 2026. Most recent record check: 14 Oct 2026. Counts reflect the last collected status; some records may be out of date.

Local planning information

Council sources checked 14 Sept 2026
Planning information Planning and building controlLocal plan Planning policyPre-application advice Pre-application process and feesArticle 4 directions Article 4 Directions

Conservation areas and Article 4 directions

Explore published planning boundaries and follow their source records for designation details. Coverage varies: an empty map does not mean there are no restrictions. Check the council’s current maps and documents before relying on a boundary.

Conservation areas39 mapped area records
Article 4 direction areas149 mapped area records1 identified HMO area records; remaining records unclassified

Interactive planning map loads with JavaScript. Dataset sources are linked below.

Download Article 4 coverage for all authorities (CSV)

Data downloaded 14 Sept 2026. Display boundaries are simplified and indicative. Map record counts are not a complete count of designations or directions.

Sources: Planning Data conservation areas and Article 4 direction areas. Contains public sector information licensed under the Open Government Licence v3.0.

More application records

  1. Refusal2727/APP/2023/488

    Conversion of roof space to habitable use to include a rear dormer including insertion of 2 roof lights and conversion from hip to gable roof

    49 HILLINGDON HILL HILLINGDON

    Received 20 Feb 2023
  2. Prior Approval N/Req79802/APP/2025/2970

    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 3.00 metres, and for which the height of the eaves would be 2.83 metres.

    67 WOODSTOCK GARDENS HAYES UB4 8BA

    Received 24 Nov 2025
  3. Approval76534/APP/2021/2481

    Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4 metres, for which the maximum height would be 3 metres, and for which the height of the eaves would be 3 metres

    17 GLEBE ROAD HAYES UB3 2EA

    Received 23 Jun 2021
  4. Approval56766/TRE/2026/64

    TPO 321 T15 1x Oak to prune up to 2m away from the house and reduce upper crown to previous points.

    1 ACORN GROVE HARLINGTON

    Received 12 Mar 2026
  5. Approval78081/APP/2023/1634

    Erection of a single storey extension to rear.

    42 GADE CLOSE HAYES UB3 3PY

    Received 5 Jun 2023
  6. Refusal50387/APP/2021/3775

    Part double and part single storey side and rear extension

    131 PARK AVENUE RUISLIP

    Received 8 Oct 2021
  7. Approval20101/APP/2020/3335

    Single storey outbuilding to rear for storage use

    1 HIGH ROAD EASTCOTE

    Received 16 Oct 2020
  8. Approval16161/APP/2026/502

    Variation of Condition 2 (Approved Plans) of planning permission ref. 16161/APP/2025/231, dated 15-04-2025 (Construction of a part single-storey, part two-storey side and rear extension, conversion of roof to habitable space to include the construction of two rear dormers and installation of three roof lights and amendments to fenestration.) to [enlarge first floor extension above ground floor]

    104 COPSE WOOD WAY NORTHWOOD

    Received 26 Feb 2026
  9. Approval20861/APP/2025/475

    Erection of an outbuilding to rear garden and conversion of roof space to habitable use to include a rear dormer, 3 front roof lights, conversion from hip to gable end with 2no. new gable end windows (Application for a Certificate of Lawful Development for a Proposed Development)

    56 GOULDS GREEN HILLINGDON

    Received 21 Feb 2025
  10. Approval75634/APP/2020/1721

    Single storey outbuilding to rear to be used as a study

    8 LAWRENCE GROVE UXBRIDGE UB10 0FF

    Received 7 Jun 2020
  11. Refusal76567/APP/2021/2668

    Single storey side extension (following demolition of existing garage)

    146 GROSVENOR CRESCENT HILLINGDON UB10 9EY

    Received 6 Jul 2021
  12. Approval52974/APP/2022/1737

    Conversion of roofspace to habitable use to include a hip to gable extension, rear dormer and front rooflights (Application for a Certificate of Lawful Development for an Existing Development)

    2 COLBROOK AVENUE HAYES

    Received 27 May 2022
  13. Approval73206/APP/2025/2090

    Proposed outbuilding at rear to be used as gym and office

    27 TOWNFIELD SQUARE HAYES

    Received 4 Aug 2025
  14. Approval33854/APP/2023/3009

    Conversion of integral garage to habitable accommodation including part front/side extension

    50 THE FAIRWAY RUISLIP

    Received 16 Oct 2023
  15. Approval77095/APP/2023/3437

    Details pursuant to the (Partial) discharge of Condition 4 Part A (Land contamination) of planning permission ref. 77095/APP/2023/2856, dated 13-11-23(Conversion of 1 detached workshop into 2 no. 2-bedroom houses (Application for Prior Approval under Schedule 2, Part 3, Class MA of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended))

    12-18 Whittles Yard Rear Of HALLOWELL ROAD NORTHWOOD HA6 1DW

    Received 28 Nov 2023
  16. Withdrawn (P)55129/APP/2023/3395

    Subdivision of the existing detached dwelling into 2 x self-contained residential dwellings (1 x 3-bed plus 1 x 1-bed units)

    59 GAINSBOROUGH ROAD HAYES

    Received 23 Nov 2023
  17. Approval9579/APP/2026/82

    Installation of 2 x outdoor air conditioning (AC) units (Part -Retrospective application)

    69 DENECROFT CRESCENT HILLINGDON

    Received 12 Jan 2026
  18. Approval19346/APP/2024/1736

    Erection of a single storey extension to the rear.

    19 CANFIELD DRIVE RUISLIP

    Received 1 Jul 2024
  19. Approval77558/APP/2022/3718

    Erection of a part single storey, part two storey side and rear extension; removal of front porch and rendering of the entire property (following removal of existing metal panels).

    46 STORMOUNT DRIVE HAYES UB3 1RQ

    Received 8 Dec 2022
  20. Split Decision (P)40325/TRE/2023/279

    To carry out tree surgery including a height reduction by 1m and cut back branches going in to neighbours garden and trim branches facing house to One Cypress T18, To height reduce by 1m Two Cypress within Group 2 on TPO 381.

    5 NIGHTINGALE CLOSE EASTCOTE PINNER

    Received 20 Nov 2023
  21. Approval5600/APP/2023/2385

    Erection of a two storey extension to side and part single storey, part two storey extension to rear. Conversion of roof space to habitable use to include a rear dormer with 2 front roof lights.

    3 ROYAL LANE YIEWSLEY

    Received 9 Aug 2023
  22. Approval25204/APP/2025/1795

    Erection of an outbuilding to the rear garden.

    17 LYNHURST CRESCENT HILLINGDON

    Received 1 Jul 2025
  23. Refusal62256/APP/2025/1502

    Conversion of roofspace of the upper floor flat to habitable use with rear dormer, widening of existing dormer.

    FLAT 1 1006 UXBRIDGE ROAD HAYES U84 0RL

    Received 30 May 2025
  24. Approval23282/APP/2020/2709

    Conversion of roof space to habitable use to include a rear dormer, 2 front rooflights, gable end window and porch to front (Application for a Certificate of Lawful Development for a Proposed Development)

    116 HALLOWELL ROAD NORTHWOOD

    Received 27 Aug 2020

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

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Researching a proposal in London Borough of Hillingdon

Start with the address or application reference. Open a record to read the proposal, dates and available documents, then check the official register for the latest plans and consultation details. If nothing appears, check coverage before treating the result as a complete planning history.

How to search planning applications

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What these statistics cover

These figures describe applications collected by PlanningTrack for London Borough of Hillingdon, across all dates currently available. They are a partial dataset, rather than an authority-wide performance measure. The date range does not establish continuous historical coverage.

The approval percentage is approved records divided by approved plus refused records. Pending, withdrawn and unknown outcomes are excluded. No percentage is shown until there is an approved or refused record.

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