When must a council tell you about a neighbour's plans
For a householder application the council can choose a site notice instead of writing to you, and that is lawful. Here is what article 15 requires, who counts as adjoining, and how to act if the publicity failed.
The neighbour notification planning rules in England are narrower than most people assume. For an ordinary householder application, the council has a choice: it can put up a site notice, or it can write to adjoining owners and occupiers. It does not have to do both, and if it chooses the site notice you may never receive a letter at all.
That choice sits in article 15 of the Town and Country Planning (Development Management Procedure) (England) Order 2015, and knowing which method applied to the application next door is the first thing to establish if you have just discovered building work you were never told about.
Which publicity method the council must use
Article 15 sets a minimum for each type of application. Councils can do more, and many do under their own statement of community involvement, but they cannot do less.
| Type of application | Statutory minimum publicity |
|---|---|
| Householder and other minor development | Site notice, or notice served on adjoining owners and occupiers |
| Major development | Site notice or neighbour notification, plus a local newspaper advertisement |
| Development affecting the setting of a listed building or the character or appearance of a conservation area | Site notice plus a local newspaper advertisement |
| Development subject to an environmental statement, or a departure from the development plan, or affecting a public right of way | Site notice plus a local newspaper advertisement |
Read that table and a common grievance explains itself. A rear extension on the house behind yours is minor development. If the council chose a site notice on a lamp post at the end of the road, the publicity was lawful even though nobody in the street saw it.
The choice is the council's alone, and it is not something you can require in advance. What you can do is ask to be notified of applications in your area. Many authorities run a weekly list by email or a postcode alert, and signing up is the only reliable way to see applications you would otherwise miss.
Who counts as an adjoining owner or occupier
Where the council does write to neighbours, the duty is to serve notice on owners and occupiers of land adjoining the application site. Adjoining means sharing a boundary, including sharing it at a single point.
The consequences are often counter-intuitive. The house directly opposite, across a road, does not adjoin. A property whose garden touches the corner of the site does. A flat above a shop is a separate occupier from the shop below. Where a site is held by a landlord and occupied by a tenant, both the owner and the occupier fall within the description.
Councils in practice often go wider than the statutory list, especially for schemes likely to attract interest, and some have a published policy of notifying everyone within a set distance. That is a matter of local practice and not an entitlement. If you are outside the statutory definition and want to be told, ask the case officer to add you to the consultation for that application and follow it up in writing.
Site notices, dates and the 21 days
A site notice has to be displayed in at least one place on or near the land for a period of not less than 21 days. The period in which representations can be made runs for 21 days beginning with the date the notice was first displayed.
Three details are worth knowing. The notice can legitimately be fixed to a post, a fence or a tree on or near the site, which sometimes means facing away from the public footpath. The council is not at fault if the notice is removed or defaced by someone else during the period, although a notice that is removed almost immediately is worth raising because authorities will often re-display and restart the clock as a matter of good practice. And where publicity was by letter instead, the 21 days run from the date the letter was served rather than the date you opened it.
Newspaper advertisements run to a shorter period. Representations must be made within 14 days beginning with the date the advertisement was published, which is why the press notice is rarely the route through which local people actually find out.
Certificates of ownership are a separate duty
Publicity by the council is not the only notification in the system. The applicant has to certify who owns the application site, and where they are not the sole owner they must serve notice on the other owners and on any agricultural tenant. That is done through the ownership certificates, lettered A to D, that accompany the application form.
This matters if part of your land has been included in someone else's red line, which happens more often than you would think where an access, a drain run or a strip of verge is involved. A false or incomplete certificate is a serious matter and can be raised directly with the case officer, with evidence of your title.
If the application also includes advertisement consent, the publicity requirements are different again, and the practicalities are set out in our note on objecting to an advertisement consent application.
When the notification goes wrong
Defective publicity does not automatically invalidate a permission. The courts look at whether anyone was substantially prejudiced by the failure, which sets a real but not impossible bar.
The realistic options, in the order most people use them, are these.
- Tell the case officer immediately, in writing, before the decision is made. A council that realises its publicity was defective will usually re-publicise and extend the period rather than risk the decision.
- Ask the ward councillor to request that the application go to committee rather than being decided under delegated powers.
- If the decision has already been issued, complain to the council through its formal complaints procedure, then to the Local Government and Social Care Ombudsman. The Ombudsman can find maladministration and recommend a remedy, but cannot quash a planning permission.
- Judicial review in the Planning Court is the only route that can set a permission aside, and it has a short time limit of six weeks for planning decisions and a real costs risk. Take legal advice quickly rather than exploring the other routes first.
The uncomfortable truth is that most notification failures are remedied only if you catch them before the decision notice is issued. After that, the balance shifts heavily towards the person holding the permission.
Checking the publicity record on the file
Everything above can be verified. The council's planning register holds the application file, and the publicity documents are part of it.
Look for the copy of the site notice with the date of first display written on it, any certificate or officer note confirming display, the neighbour notification letter template with the schedule of addresses it went to, the press notice with its publication date, and the officer report, which normally summarises how the application was publicised and how many representations were received.
If any of those are missing from the online file, ask for them. A request for the publicity record is an ordinary planning enquiry, and where the council declines you can make a request under the environmental information regime, which covers most planning material.
Acting late when nobody told you
A representation received after the statutory period has expired is not automatically excluded. In practice officers consider everything received before the decision is made, and most councils say so in their published procedures.
So write anyway, and write about planning matters rather than about the unfairness of the process. Set out the effect of the proposal on daylight, privacy, parking, noise or the character of the area, with the specifics of your property. Ask for a site visit. Ask, separately and explicitly, to be notified if amended plans are submitted, because a scheme often changes after the first round of objections and councils have a discretion rather than a duty to consult again on the revisions. What happens in that situation is covered in our note on when plans are amended after you object.
If the work has already started without any permission at all, the retrospective route is a separate process with its own publicity, and our note on objecting to a retrospective planning application explains how that runs.
For anyone on the other side of the counter, the document that records how a developer consulted the community before applying is the Statement of Community Involvement, and reading it tells you what the applicant claims to have done. Anyone preparing an application can see which reports a site needs by entering a postcode.
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.
Frequently asked questions
Does the council have to write to me about my neighbour's extension?
Not necessarily. For minor development including householder applications, article 15 of the Development Management Procedure Order 2015 lets the council choose between displaying a site notice and serving notice on adjoining owners and occupiers. Either satisfies the duty. Many councils write to neighbours as a matter of local policy, but that is practice rather than entitlement.
Who counts as an adjoining owner or occupier?
Someone who owns or occupies land that shares a boundary with the application site, including where it touches at only a single point. A house across a road does not adjoin. A garden that touches the corner of the site does. Where land is let, both the owner and the occupier fall within the description.
How long is the consultation period?
Representations must be made within 21 days beginning with the date a site notice was first displayed, or 21 days from the date a neighbour notification letter was served. Where publicity was by newspaper advertisement, the period is 14 days beginning with the date of publication. Councils often accept comments after the deadline in practice.
What if the council failed to publicise the application properly?
Defective publicity does not automatically invalidate a permission; the courts ask whether anyone was substantially prejudiced. Tell the case officer in writing before the decision, because councils usually re-publicise rather than risk the decision. After the decision, the Ombudsman can find maladministration but only the Planning Court can quash a permission.
Can I still object after the deadline has passed?
Usually yes in practice. Officers normally consider everything received before the decision is made. Write about planning matters such as daylight, privacy, parking, noise or the character of the area, with specifics about your property, and ask separately to be told if amended plans are submitted.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.