Hillingdon Local Plan: adopted policies and emerging plans

Check the planning authority first

Hillingdon’s adopted policies apply within its administrative area. For airport, major infrastructure or boundary sites, establish the consent route as well as the borough boundary.

The council’s accessible planning-policy pages were on its pre.hillingdon.gov.uk subdomain at this check. This profile records that source location explicitly; links should be rechecked if the council migrates the pages.

Adopted development-plan documents

Read the relevant policy wording and map together. An unverified date is a gap in this profile, not a finding that a document has no legal effect.

• London Plan 2021

  Adopted. March 2021 strategic plan.

  London-wide strategic policies. Read alongside the applicable borough development-plan documents and the relevant authority boundary.

  Plan period and recorded dates

  Plan period

  Not verified

  Adopted or made

  Exact date not verified

  Separate effective date

  Not verified

• Local Plan Part 1: Strategic Policies

  Adopted. 2012 strategic plan.

  Borough-wide growth strategy and core policies, including a horizon to 2026. An end year in the plan is not itself a replacement adoption. Exact adoption day is left unverified here.

  Plan period and recorded dates

  Plan period

  To 2026

  Adopted or made

  Exact date not verified

  Separate effective date

  Not verified

• Local Plan Part 2: Development Management Policies

  Adopted. January 2020.

  Adopted 16 January 2020.

  Detailed policies, including DMHD1 for residential alterations and extensions and associated design material. Read the whole applicable policy and exceptions.

  Plan period and recorded dates

  Plan period

  Not verified

  Adopted or made

  16 January 2020

  Separate effective date

  Not verified

• Local Plan Part 2: Site Allocations and Designations

  Adopted. January 2020.

  Adopted 16 January 2020.

  Site-specific allocations and designations, used with the updated policies map. The council states that the 2020 Part 2 replaced the saved UDP policies.

  Plan period and recorded dates

  Plan period

  Not verified

  Adopted or made

  16 January 2020

  Separate effective date

  Not verified

• West London Waste Plan

  Adopted. 2015 joint plan.

  Joint waste planning framework, separate from the borough-wide housing and design plan. The exact authority-specific adoption date has not been verified in this profile.

  Plan period and recorded dates

  Plan period

  To 2031

  Adopted or made

  Exact date not verified

  Separate effective date

  Not verified

Policies maps and site boundaries

The adopted-plan register links the policies map updated for the January 2020 designations and allocations.

Check the relevant designation and instrument, not just a colour on the map. In particular, the council publishes a borough-wide larger-rear-extension Article 4 page; an absence of a map flag is not enough to establish permitted development.

• Hillingdon adopted Local Plan and policies map
• Large rear extensions: Article 4 Direction

Emerging plans and examination progress

The May 2026 timetable is more specific than the older review page’s quarterly programme. It lists scoping consultation from 9 July to 21 August 2026 and Gateway 1 for 17 September 2026.

The following content-and-evidence consultation is scheduled for 5 November 2026 to 14 January 2027. Submission in November 2027 and consideration of adoption in May 2028 are forecasts.

No adoption or examination hearing for the replacement is established by those future dates. The separate joint waste replacement is at Regulation 19 consultation.

• New Hillingdon Local Plan

  Emerging: preparation under the 2026 timetable. May 2026 notice and timetable under the new plan-making system.

  The timetable records scoping in July–August 2026 and later consultation, gateways and examination. Future milestone dates are intentions, not evidence of completed stages.

  Plan period and recorded dates

  Plan period

  Not verified

  Adopted or made

  Not adopted in checked sources

  Separate effective date

  Not verified

• West London Waste Plan update

  Emerging: Regulation 19 consultation. Regulation 19 proposed submission consultation, August 2026.

  Replacement waste plan consultation is listed for 4 August to 28 September 2026. It is not yet an adopted replacement.

  Plan period and recorded dates

  Plan period

  To 2041

  Adopted or made

  Not adopted in checked sources

  Separate effective date

  Not verified

Published milestones and events

• Part 2 adopted

  16 January 2020

  Development Management Policies and Site Allocations and Designations adopted at Full Council.

  • Hillingdon adopted Local Plan and policies map

• New timetable published

  12 May 2026

  Notice and Local Plan timetable published.

  • Hillingdon Local Plan review
  • Hillingdon Local Plan timetable

• Scoping closing date in timetable

  21 August 2026

  The timetable lists 9 July–21 August 2026; this records the published programme, not a verified consultation outcome.

  • Hillingdon Local Plan timetable

• Gateway 1 scheduled

  17 September 2026

  Future milestone on the checked timetable.

  • Hillingdon Local Plan timetable

Check the official programme before attending a hearing or relying on a deadline. A consultation, hearing or inspector's report is distinct from adoption. This page is a checked snapshot, not a live calendar.

Local design and supporting guidance

For residential extensions, start with adopted Part 2 DMHD1 and the document’s relevant design material. This profile does not elevate an old residential-extension SPD over the 2020 policies.

Check the actual Article 4 Direction, its schedule and current national rules before relying on the larger-rear-extension route. The council page uses historic GPDO references, so the page summary alone is not a full legal test.

Design guidance does not establish that work is permitted development. Check the national rules, planning conditions and any relevant local restrictions.

What to do for your property

1. Open the adopted Part 2 map and identify site constraints.
2. Read DMHD1 or other relevant development-management policies in full.
3. Obtain the actual Article 4 instrument where a PD right may be restricted.
4. Recheck whether Gateway 1 occurred after the scheduled September date.
5. Keep proposed plan and waste-plan consultations separate from adopted policy.

Keep the document versions, maps and date of your check with your project notes. A boundary, policy conflict or transition may need assessment by the relevant authority or a suitably qualified planning professional.

Sources, review and changes

These AI-assisted checks cover published document identity, status, dates and links. They do not decide how policy applies to an individual site, and professional planning review has not been completed.

Source-check dates describe when we inspected the source. They do not renew automatically when the website is rebuilt. We link to official documents without claiming a licence over them or republishing them.

First published 8 September 2026. Recorded adopted and emerging documents, source dates and stated gaps.

Report a correction with this page and an official source link.