Which neighbours must be told about an application

There is no legal duty on a council to write to every neighbour about a planning application. Article 15 of the Town and Country Planning (Development Management Procedure) (England) Order 2015 sets out the publicity a local planning authority must carry out, and for most small applications it gives the council a choice: display a site notice, or serve notice on an adjoining owner or occupier. One or the other. A council that puts up a notice on the lamp post outside and writes to nobody has complied.

That surprises people who find out about a development after the consultation period closed. It is worth knowing what the rules actually require before complaining that they were broken.

What the publicity rules require

Article 15 ties the method of publicity to the type of application. The duty sits on the council, not on the applicant, and the council chooses the method within the limits the Order allows.

Major development has a defined meaning: ten or more dwellings, a site of half a hectare or more for residential use, 1,000 m² or more of other floorspace, or a site of one hectare or more. Everything below that is minor or householder development, and that is where the single site notice is enough.

Site notices, letters and press notices compared

A site notice is a printed notice fixed near the site on or adjoining the land, where it can be read by the public. The representations period runs for at least 21 days from the day the notice is first displayed. Councils photograph the notice and keep the photograph on the file.

A neighbour notification letter is served on the owner or occupier of adjoining land. Councils that use letters usually allow 21 days from the date of service, and many state the closing date on the letter itself.

A newspaper advertisement is published in a local paper circulating in the area, with a minimum period of 14 days from the date of publication. The advertisement route is the one most likely to be missed by residents, because few people read the public notices page.

Where a site notice is removed, torn down or weathered beyond legibility, the council has done what the Order requires if it took reasonable steps. It is not obliged to replace a notice it does not know is missing, though most will when told.

Major and minor applications and different duties

For a major application the council must advertise in the press and must also either display a site notice or notify neighbours. In practice most authorities do both the notice and the letters for majors, because the volume of objections is lower when people hear early.

For householder work the duty is thinner. A single storey rear extension on the house next door may be publicised by one notice on a street that the affected neighbour never walks down. If you want to know about applications near you reliably, the public register is the answer rather than the post. Councils publish weekly lists and many offer email alerts by postcode or ward, and following an application through the public register is the route that does not depend on anyone writing to you.

Who counts as an adjoining owner or occupier

Adjoining means sharing a boundary with the application site, including a boundary touched only at a point. The flat above, the house behind, the garden alongside and the field over the fence all adjoin. A house across the road does not, nor does a property separated by a service alley, a watercourse or another person's garden.

That definition is narrower than most people's sense of being affected. A tall building can overshadow a property three doors away without that property ever being an adjoining occupier for the purposes of the Order. Nothing stops the council notifying more widely, and some authorities have a local policy of writing to a wider ring. Nothing requires it either.

Owner means the freeholder or a leaseholder with at least seven years unexpired, so a short-term tenant may be notified as an occupier while their landlord is notified as an owner.

Failures of notification and what they mean

A defect in publicity does not make a planning permission void by itself. The courts look at whether the failure caused substantial prejudice, which usually means asking whether a person who would have objected was deprived of the chance and whether their objection could have altered the decision.

The practical remedies, in the order most people reach for them:

1. Ask the case officer to re-notify and extend the period, before the decision is issued
2. Ask for the application to be reported to committee rather than decided under delegated powers, where the scheme of delegation allows a councillor or a petition to trigger that
3. Complain to the council's monitoring officer where the decision has already been made
4. Complain to the Local Government and Social Care Ombudsman about maladministration, once the council's own complaints process is exhausted
5. Take advice on judicial review, which has a six week limit from the grant of permission in planning cases and needs legal representation

The first of those resolves the overwhelming majority of cases. Officers would rather re-consult than defend a procedural argument later.

Checking what publicity was carried out

Every application file on the public register should contain the publicity record: a copy of the site notice with the display date, the photograph, the consultation list or the template letter, and the press notice reference where one was required. If it is not published, ask for it. Information held by a council about the environment is accessible under the Environmental Information Regulations 2004, and a consultation record falls within that.

Compare the dates. The period must have run for the minimum number of days and must have begun after the notice was displayed or served, not before. A notice dated after the officer report was drafted is worth raising.

Asking for the period to be reopened

Councils keep accepting representations until the decision is made, as a matter of practice rather than law. Write to the case officer, say when you learned of the application and why, and ask for your comments to be taken into account and for the period to be extended. Where the application has been amended since the original publicity, the council has to consider whether re-consultation is needed, and an amendment is a strong reason to reopen.

Say what you want to say about planning matters while you are at it. Material considerations carry weight and personal objections do not, and a late representation that engages with policy is read differently from one that arrives as a protest.

Developers who want to avoid this argument altogether do more than the Order requires. Early engagement, a leaflet, a session in a village hall, and the record of it written into a Statement of Community Involvement take the procedural complaint off the table. Getting involved before applications are submitted is where residents have the most influence, and it is also where councillors can say the least, as the rules on predetermination explain.

This is general guidance, not legal advice. Publicity requirements and local practice vary, so check the position with your local planning authority or a qualified professional before relying on it.