The 21 day consultation period and who is notified

When a planning application is publicised, you normally get at least 21 days to comment. The planning consultation 21 days runs from the date the site notice goes up, the neighbour letter is sent, or the press advertisement is published, whichever method the council has used. Comments sent inside that window are summarised in the officer's report and put before whoever makes the decision.

The requirements sit in article 15 of the Town and Country Planning (Development Management Procedure) (England) Order 2015. They are minimums. A council can do more than the order requires, and many do, but it cannot do less.

Where the publicity rules come from

Article 15 sets out which method of publicity applies to which kind of application, and the answer depends on the type of development rather than on how controversial it is.

Larger and more sensitive proposals get more publicity. Development that is subject to an environmental statement, that departs from the development plan, or that would affect a public right of way requires both a site notice and a newspaper advertisement. Major development requires a newspaper advertisement plus either a site notice or neighbour notification. For everything else, including householder applications, the council must either display a site notice or serve notice on adjoining owners and occupiers.

Applications for listed building consent and development affecting a conservation area carry their own publicity requirements, which is why a modest extension in a conservation area attracts more notice than the same extension two streets away.

The period for representations is at least 21 days from the date the notice is served, published or first displayed. Councils frequently give longer, and a target date that falls inside the consultation period is a sign that something has gone wrong with the administration rather than an attempt to shut you out.

Site notices, letters and press advertisements

Each method reaches a different audience, which is why the order pairs them for larger schemes.

A site notice is a laminated sheet fixed to a lamp post, a fence or a gate near the site. It carries the application reference, a description of the proposal, where to view the documents and the date by which comments should be made. It is the only method that reaches passers-by who do not live next door.

A neighbour letter goes to the owners and occupiers of adjoining land. It is more reliable than a site notice because it arrives through a door, and less visible because only those addresses receive it.

A press advertisement in a local newspaper circulating in the area is the formal method for major, EIA and departure applications. It is the least read of the three and the hardest to remove or deface.

If a site notice is taken down or becomes illegible without the council's knowledge, the council is generally still treated as having met its duty, provided it took reasonable steps. That surprises people who only discovered an application after the notice disappeared. The differences between the methods and when each applies are set out further in neighbour notification, site notices, letters and press adverts.

Who counts as an adjoining owner or occupier

Adjoining means sharing a boundary with the application site. That includes the properties either side, the property behind, and properties meeting the site only at a corner.

It does not automatically include the house across the road, the flat three doors down, or the street that will carry the construction traffic. Many councils notify more widely than the minimum, particularly for tall or prominent buildings, and their adopted practice will be published in a statement of community involvement. Read that document rather than assuming, because it is where each authority records what it does beyond the statutory floor.

Occupiers are notified as well as owners, so tenants should receive a letter in their own right. In a block of flats that means every flat sharing a boundary with the site, rather than the freeholder or managing agent alone. If your building was notified through a single letter to the managing agent, that is worth raising with the case officer.

Where a scheme is large enough to need a Statement of Community Involvement from the applicant, the pre-application engagement described in it is separate from the council's statutory publicity and does not replace it.

Representations that arrive after the deadline

The 21 days is a minimum period for publicity, not a guillotine on the officer's post.

In practice a council will consider representations received at any point before the decision is made, because anything material to the decision has to be taken into account. What you lose by being late is influence rather than admissibility. By the time the officer is writing the report, the assessment is largely formed, and a comment arriving the day before a committee meeting may reach members only as a late addendum.

Two habits help. Send the comment early and keep it short, with the address and application reference at the top. And write about planning matters: overlooking, loss of light, noise, highway safety, design in context, effect on a heritage asset, conflict with a named local plan policy. Objections about property values, loss of a private view, boundary disputes and the identity of the applicant carry no weight, and including them dilutes the rest.

Re-consultation on amended plans

There is no statutory requirement to re-consult when an application is amended, which is the source of a great deal of local frustration.

The council decides whether the change is material enough to warrant going back out. A reduction in height or depth is often treated as not requiring re-consultation, on the basis that nobody is prejudiced by a smaller scheme. A change that introduces a new window facing a neighbour, or moves a vehicle access, usually does.

Where re-consultation happens, it is normally a shorter period, commonly 14 days, and the council will say so in the letter. If you commented on the original scheme and think the amendment makes things worse rather than better, say that in writing and ask to be re-notified. Councils generally maintain a list of interested parties for exactly this purpose. The rules for larger schemes, where the publicity obligations are heavier, are covered in publicity for major development.

What the council must publish

Every local planning authority keeps a statutory register of applications, and in practice that register is the online planning search on the council's website.

You should expect to find the application form, the plans and drawings, the supporting documents, the consultee responses as they arrive, the representations received, the officer's report once written, and the decision notice. Some material is withheld or redacted, including personal contact details and, occasionally, protected species location data.

Documents appear as they are received rather than all at once. An application page that looks thin in week one is normal. If a document referred to in the officer's report is not on the register, ask for it, because the report should be based on material the public can see.

Making sure you hear about the next one

Nobody gets notified about every application near them by default, and the tools to fix that are ordinary.

1. Sign up for the council's weekly or fortnightly list of registered applications, usually by email.
2. Set up a saved search or alert on the planning register for your postcode area, where the council's system supports it.
3. Ask to be added to the interested parties list for any application you have already commented on.
4. Join or start a residents' association or amenity society, since many councils consult recognised local groups as a matter of adopted practice.
5. Check whether your parish or town council is a statutory consultee in your area, and read its agendas.

None of these gives you a veto. What they give you is time, which is the thing that actually matters when a 21 day period has already started.

Enter your postcode on PlanScope to see which documents a proposal near you would normally have to include.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.