Understanding planning · 13 min read
Planning application documents: what to read first
Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.
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 dates26,474Searchable applications
441Recorded as pending
79%Approval rate · 24,658 approved or refused records
5,149Refused applications
19,509 approved · 5,149 refused · 1,006 withdrawn. Received dates in our records: 16 Oct 2019 to 5 Oct 2026. Most recent record check: 15 Oct 2026. Counts reflect the last collected status; some records may be out of date.
Local planning information
Council sources checked 14 Sept 2026Planning 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
- Approval65403/APP/2023/1326
Erection of a part single storey, part double storey rear extension.
79 MINTERNE WAYE HAYES MIDDX UB4 OPF
Received 5 May 2023 - Approval9542/APP/2022/2785
Erection of a part single storey and part double storey side and rear extension with roof space for use for habitable accommodation including new rear dormer with 4 no. rooflights. Following the demolition of the existing side garage, the lean-to rear conservatory, the side and rear box dormers and two external chimney stacks.
6 CHESTER ROAD NORTHWOOD
Received 5 Sept 2022 - Approval19030/APP/2022/1831
Details pursuant to the discharge of Condition 4 (Landscaping) of planning permission ref. 19030/APP/2022/139, dated 17/03/22 (Erection of a single storey rear infill extension)
14 BAWTREE ROAD UXBRIDGE UB8 1PU
Received 8 Jun 2022 - Refusal68537/APP/2023/2472
Conversion of roof space to habitable use to include a rear dormer, 2 front roof lights and conversion of roof from hip to gable end and the removal of chimney stack. (Application for a Certificate of Lawful Development for a Proposed Development)
37 WOODFORD CRESCENT PINNER HA5 3TZ
Received 17 Aug 2023 - Undecided79797/APP/2026/2167
Erection of a two-storey, two-bedroom (three-person) dwellinghouse with associated cycle and refuse storage, boundary treatment and landscaping.
LAND TO THE SIDE OF 1 SOUTH WALK HAYES UB3 2RE
Received 8 Sept 2026 - Approval11125/APP/2021/3060
New roof to existing single storey side/rear extension.
34 MERLE AVENUE HAREFIELD
Received 10 Aug 2021 - Approval28858/APP/2023/327
Erection of a part single storey, part double storey rear extension and single storey side extension
23 FOXFIELD CLOSE NORTHWOOD
Received 2 Feb 2023 - Approval2698/APP/2021/2355
Change of use from a financial and professional services, retail and cafe (Use Class E) to a mixed-use comprising retail, restaurant and cafe and a drinking establishment (Sui Generis) and retention of awnings and air conditioning units
199 FIELD END ROAD EASTCOTE
Received 10 Jun 2021 - Approval6206/APP/2023/3369
Partially retrospective application for the retention and alteration of a part single storey, part double story rear extension, first floor side extension and a garage conversion. Conversion of roof space to habitable use to include 2 front roof lights, a rear dormer and conversion of roof from gable to hip end. Alterations to fenestration (Partially Retrospective Application and Revised Description)
1 GROVE CLOSE ICKENHAM
Received 22 Nov 2023 - Approval79287/APP/2025/355
Erection of single storey rear extension (Application for a Certificate of Lawful Development for a Proposed Development)
25 KINGS COLLEGE ROAD RUISLIP HA4 7JY
Received 12 Feb 2025 - Approval16161/APP/2025/1840
Variation of Condition 2 (Approved Plans) of planning permission ref. 16161/APP/2025/231, dated 15-04-25 (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 extend the rear extensions to include an additional single storey rear extension and a first floor infill extension.
104 COPSE WOOD WAY NORTHWOOD
Received 4 Jul 2025 - Refusal36075/APP/2021/304
Erection of a two-storey 2-bed dwelling house with associated parking and amenity space and single storey rear extension to existing dwelling including demolition of existing side extension
2 ADELPHI CRESCENT HAYES
Received 25 Jan 2021 - Approval5085/APP/2025/2000
Erection of a single storey rear extension with a part double pitched roof.
13 ELM AVENUE EASTCOTE
Received 24 Jul 2025 - Approval68790/TRE/2020/83
To carry out tree surgery, including a crown reduction by up to 1.75m and a crown thin by 15%, to one Oak, within Group 1 on TPO 433a.
2 WILLOW END NORTHWOOD HA6 3QA
Received 28 Apr 2020 - Approval76866/APP/2021/4217
Single storey rear extension, single storey side wrap around extension with a pitch roof, and conversion of garage to habitable accommodation together with alterations to garage roof.
76 BLACKLANDS DRIVE HAYES UB4 8EY
Received 16 Nov 2021 - Approval41080/TRE/2020/160
To remove one Leyland Cypress from within Group 1 on TPO 257.
6 TANWORTH CLOSE NORTHWOOD
Received 7 Jul 2020 - Refusal (Appealed)26449/APP/2020/831
Conversion of roof space to habitable use to include a front/side dormer and 3 side and 4 rear roof lights
50 ST MARTINS APPROACH RUISLIP
Received 9 Mar 2020 - Approval64480/APP/2023/2696
Demolition of existing garage and erect a single storey rear and side extension
11 MILL CLOSE WEST DRAYTON
Received 13 Sept 2023 - Approval31216/APP/2023/792
Erection of a first floor extension to the side and single storey extension to existing garage. Replacement of tiles to existing roof to match new proposal.
47 THE RIDGEWAY RUISLIP
Received 16 Mar 2023 - Approval13974/APP/2020/2676
Single storey rear extension
14 WINDSOR PARK ROAD HARLINGTON
Received 25 Aug 2020 - Approval20342/APP/2025/139
Details pursuant to the discharge of Conditions 3 (Construction Logistics), 4 (Sustainable water management), 5 (Materials), 6 (Levels), 7 (Step free access), 8 (Landscaping), 13 (Basement Impact) and 14 (Tree protection) of planning permission ref. 20342/APP/2024/166, dated 22-03-2024 (Appeal ref. APP/R5510/W/24/3346298 dated 07-11-2024) (Erection of new two storey 3-bed dwelling with basement, new garage, bin storage and associated amenity space, following demolition of existing dwelling.)
5A HARROW VIEW HILLINGDON
Received 20 Jan 2025 - Approval17866/APP/2020/1174
Replacement of door and window openings of existing rear extension by bi-fold doors and addition of one roof light to existing roof
17 WENTWORTH DRIVE EASTCOTE PINNER
Received 1 Apr 2020 - Approval79000/APP/2025/320
Joint application for part single storey, part two storey rear extension and detached replacement outbuilding.
38-40 MARLBOROUGH ROAD HILLINGDON UB10 0PS
Received 10 Feb 2025 - Approval50766/APP/2023/966
Conversion of roof space to habitable use to include a rear dormer and 3 front roof lights (Application for a Certificate of Lawful Development for a Proposed Development)
12 WESTBOURNE CLOSE HAYES
Received 31 Mar 2023
Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.
View all applicationsResearching 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.
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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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