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 dates37,670Searchable applications
501Recorded as pending
77%Approval rate · 35,310 approved or refused records
8,170Refused applications
27,140 approved · 8,170 refused · 1,267 withdrawn. Received dates in our records: 1 Oct 2008 to 9 Oct 2026. Most recent record check: 20 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 Counts reflect the last collected status; some records may be out of date.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
- Approval71317/APP/2020/2039
Single storey side extension and single storey detached outbuilding to rear for use as a store
1 BAXTER CLOSE HILLINGDON
Received 3 Jul 2020 - Approval3573/APP/2017/3636
Single storey side/rear extension.
162 LONG LANE HILLINGDON
Received 9 Oct 2017 - Approval5861/APP/2019/983
Conversion of roof space to habitable use to include rear dormer and 3 front roof lights
54 DALE DRIVE HAYES
Received 21 Mar 2019 - Approval6794/APP/2020/4112
Details pursuant to condition 3 (Landscape) of planning permission Ref: 6794/APP/2020/3206 dated 04/12/2020 (Single Storey rear extension, porch to front, conversion of roofspace to habitable use to include a rear dormer and 3 front rooflights and conversion of dwelling into 1 x 1 bed self-contained flat and 1 x 2 bed self-contained flat and addition of a crossover to front)
28 HOPPNER ROAD HAYES
Received 11 Dec 2020 - Approval18556/APP/2022/1750
Conversion of roof space to habitable use to include a rear dormer with 2 front roof lights, conversion of roof from hip to gable end with new gable end window and removal of side chimney stack (Application for a Certificate of Lawful Development for a Proposed Development)
56 CORNWALL ROAD RUISLIP
Received 30 May 2022 - Approval39982/APP/2024/1819
Erection of a single storey rear extension and a single storey extension to the side/rear.
51 THORNHILL ROAD ICKENHAM
Received 8 Jul 2024 - Approval79138/APP/2024/2913
Installation of vehicle crossover and drop kerb.
14 BRADENHAM ROAD HAYES UB4 8LP
Received 4 Nov 2024 - Approval74796/APP/2024/2613
Erection of a part single part two storey rear extension, and a front porch.
32 ADDISON WAY NORTHWOOD MIDDLESEX HA6 1SY
Received 30 Sept 2024 - Approval24141/APP/2023/39
Retention of existing part two storey, part single storey side/rear extension (Retrospective application)
87 DULVERTON ROAD RUISLIP
Received 6 Jan 2023 - Approval60858/APP/2017/2975
Single storey rear extension and single storey outbuilding to rear for use as a garden room
17 SHELLEY CLOSE HAYES MIDDLESEX UB4 0QW
Received 14 Aug 2017 - Approval44707/APP/2017/2997
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 (Application for a Certificate of Lawful Development for a Proposed Development)
163 THE FAIRWAY RUISLIP
Received 15 Aug 2017 - Approval19145/APP/2026/96
Erection of a part single storey, part two storey side extension.
1 ST MARYS CRESCENT HAYES
Received 13 Jan 2026 - Withdrawn (P)47216/APP/2026/640
Conversion of roof space to habitable use to include a rear dormer and 2 front roof lights (Application for a Certificate of Lawful Development for a Proposed Development).
22 REGENTS CLOSE HAYES
Received 12 Mar 2026 - Approval17163/APP/2023/3560
Erection of a single storey rear extension with attached open pergola, front porch extension and associated landscaping and hardstanding
3 BUTTSMEAD NORTHWOOD HA6 2TL
Received 7 Dec 2023 - Refusal76511/APP/2022/2530
Erection of a part double storey, part single storey side and rear extension
351 KINGSHILL AVENUE HAYES UB4 8BT
Received 12 Aug 2022 - Approval51100/APP/2021/4128
Erection of a single storey side extension with flat roof.
6 SILVERDALE GARDENS HAYES
Received 8 Nov 2021 - Approval8247/APP/2017/1858
Single storey rear extension and conversion of detached garage to habitable use
22 GOSHAWK GARDENS HAYES
Received 19 May 2017 - Approval46616/APP/2019/1733
Alterations to the glazing panels including the removal of glazing panels from external curtain wall and replacement with new aluminium-framed openings
PENINSULA HOUSE, BUILDING 4 NOBEL DRIVE HARLINGTON UB3 5EY
Received 22 May 2019 - Approval73319/APP/2021/2144
Single storey side/front extension
1 STELLA CLOSE HILLINGDON
Received 27 May 2021 - Withdrawn (P)1331/APP/2021/2166
Details pursuant to the partial discharge of Condition 3 (SUDS - Block F3/F4 only) as attached to planning permission ref. 1331/APP/2019/2314 dated 28-06-21 (Development of 4 no. new buildings comprising residential units (in addition to those approved under planning permission ref: 1331/APP/2017/1883), a basement extension to Block B, flexible commercial uses (Class E) and associated landscaping, access, car parking and other engineering works)
BLOCK F3/F4, FORMER NESTLE FACTORY NESTLES AVENUE HAYES
Received 28 May 2021 - Withdrawn (P)62125/APP/2022/2109
Conversion of existing garage to an internal recreation room and demolition of existing garage and erection of a part single and part double storey and change of use from storage/distribution (Use Class B8) to day care facility (Use Class D1)
COOKS GARAGE FORGE LANE NORTHWOOD HA6 1BA
Received 1 Jul 2022 - Approval14415/APP/2019/639
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 with new gable end window (Application for a Certificate of Lawful Development for a Proposed Development)
111 WINDSOR AVENUE HILLINGDON
Received 25 Feb 2019 - Approval76551/APP/2025/3057
Details pursuant to the partial discharge of Condition 36 (Circular Economy Statement) for Phase 1A of Planning Permission Reference 76551/APP/2021/4502 dated 29-03-22. Hybrid planning application seeking OUTLINE permission (with all matters reserved) for residential floorspace (Class C3) including demolition of all existing buildings and structures; erection of new buildings; new pedestrian and vehicular accesses; associated amenity space, open space, landscaping; car and cycle parking spaces; plant, refuse storage, servicing area and other works incidental to the proposed development; and FULL planning permission for Block A comprising 30 residential units (Class C3); new pedestrian access; associated amenity space and landscaping; cycle parking, refuse storage, and other associated infrastructure.
LAND AT AVONDALE DRIVE HAYES
Received 4 Dec 2025 - Approval74087/APP/2019/517
Part two storey, part single storey side/rear extension
9 PRIORY AVENUE HAREFIELD
Received 12 Feb 2019
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.
How to search planning applicationsGuides to planning records
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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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