England planning: 21-day consultation from 26 March

If you’re learning how planning decisions are made in England, a short legal change this month is worth knowing. On 4 March 2026 ministers signed a new Statutory Instrument, laid before Parliament on 5 March, that takes effect on 26 March 2026. It updates the Development Management Procedure Order 2015, the rulebook councils use when they handle planning applications.

In plain English: the 21‑day waiting rule tied to statutory consultations will now cover any decision on an application-approval or refusal. Previously, the ‘do not decide for 21 days’ wording only applied where a local planning authority had to consult before granting permission. From 26 March, if consultation is required, the authority must wait the same minimum period before determining the case either way.

What this means for you is straightforward. Councils can’t rush to refuse an application early if a statutory consultee must be asked for views. They need to notify the consultee, allow at least 21 days for a response, and only then issue their decision. The length of the wait stays the same; the moment when it bites is wider.

Who counts as a statutory consultee in everyday cases? Think of specialist bodies such as the Environment Agency, Natural England and Historic England, plus highway authorities where schemes may affect major roads. When the Order or an official direction says these bodies must be consulted, the 21‑day clock starts from the date the notice is sent or served.

If you’re mapping a timeline for a project, here’s a learning tip. The earliest lawful decision date is at least 21 days after the consultee notice is given. There are limited exceptions set out in articles 18(6) and 18(8) of the 2015 Order, but the default is that three weeks must pass before a decision is made.

There is a transitional rule to protect in‑flight cases. If you applied before 26 March 2026 and your application is still undecided on that date, and there is an existing article 18(4) direction telling the council to consult someone before refusing, the new amendment does not apply to that specific requirement. In short, those older cases carry on under the previous setup.

Scope matters for learners. The instrument formally extends to England and Wales, but it amends the England‑only 2015 Order. That means the practical effect lands in England’s planning system rather than Wales’s.

Names and paperwork help you revise with confidence. The statutory title is the Town and Country Planning (Development Management Procedure) (England) (Amendment and Transitional Provision) Order 2026. It was signed on 4 March 2026 by Minister of State Matthew Pennycook, acting for the Secretary of State. Government says no impact assessment was produced because no, or no significant, impact is expected. An explanatory memorandum is available on the legislation website.

If you’re an applicant, agent or student, the takeaway is clear. Expect the same 21‑day minimum whenever a statutory consultee must be asked for views, whether the outcome is a yes or a no. Build that window into project plans and committee dates, and keep Article 18 of the 2015 Order close by so you can spot what triggers consultation and when the clock starts.