Legacy or New Local-Plan System? How to Tell Which Rules Apply in 2026

Two local-plan systems are operating in England during 2026. The labels look familiar enough to encourage mistakes: a Regulation 18 consultation in one authority, a notice to commence and Gateway 1 in another.

The critical rule is simple. Confirm the regime before interpreting the stage.

The systems run in parallel

The government’s rollout guidance confirms a transition period in which the legacy and new systems operate side by side.

An authority must follow the legal requirements of the system it is using from start to finish. It cannot carry out a legacy Regulation 18 consultation and then jump directly to Gateway 1 as if the two steps were interchangeable.

That means a land team should never use one generic status list for every emerging plan.

How to recognise the legacy system

A plan progressing under the legacy route will use the familiar sequence associated with the pre-LURA plan-making process, including Regulation 18 preparation and Regulation 19 publication before submission and examination.

The rollout guidance says authorities progressing under the existing system generally have until 31 December 2026 to submit for examination, subject to the specific transitional arrangements described in the guidance and current NPPF.

Record the exact stage and the source document. “Emerging plan” is too broad to support a commercial decision.

How to recognise the new system

The new system begins with a different preparation sequence:

• a plan timetable;

• notice of intention to commence;

• a scoping consultation;

• Gateway 1 self-assessment; and

• the formal 30-month process.

The new-system collection brings together the current guidance. It is a live collection and much of the supporting material is expressly described as draft or subject to update.

Gateway 1 is the easiest visible marker, but the notice appears first. If a council has published a notice to commence, check the plan timetable and the intended Gateway 1 date.

A decision tree for every authority

Use this sequence:

1. Is the authority intending to submit a legacy plan by 31 December 2026?

If yes, record the legacy stage, latest published document and submission programme. Do not relabel Regulation 18 or 19 material as a gateway.

2. Has it published a notice to commence under the new system?

If yes, record the notice date, timetable and earliest Gateway 1 date. The notice must precede Gateway 1 by at least four months.

3. Has it published a Gateway 1 self-assessment?

If yes, the 30-month period has started. Record the publication date and next milestone.

4. Was a legacy plan withdrawn?

The rollout guidance contains specific timing rules for withdrawn plans. Record the withdrawal and the new-system notice as separate events.

5. Is the position still unclear?

Keep the regime as unresolved. Save the evidence checked and escalate the ambiguity. Do not guess from a council webpage heading.

The source hierarchy to use

When confirming the regime, work in this order:

1. legislation and commencement or transitional regulations;

2. current GOV.UK rollout and plan-making guidance;

3. the authority’s formal notice, timetable and committee decisions;

4. council webpages and newsletters; and

5. secondary commentary for context only.

This matters because several 2026 planning documents are consultations or draft guidance. The December 2025 NPPF consultation closed on 10 March 2026. As at 2 August 2026, its proposals should not be described as adopted national policy unless and until the government publishes the final replacement framework.

The fields to add to your plan record

Every emerging-plan record should contain:

• regime: legacy, new or unresolved;

• legal or official source;

• exact current stage;

• date checked;

• next statutory or published milestone;

• transitional deadline, if relevant;

• affected promoted sites; and

• owner of the next review.

Then keep policy status separate. A live plan-making process does not make every draft policy adopted.

Why this is more than administrative tidying

The wrong regime produces the wrong deadline, the wrong consultation assumption and the wrong description of site status. It can also lead a team to commission evidence for a stage that has already passed.

Confirm the route first. Then interpret the plan.

For the new sequence in full, read The New Local Plan System Is Live: A 30-Month Operating Guide for Land Teams. For status distinctions at site level, see SHELAA, Allocation or Permission?.