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If building work appears to be taking place without the required approval, do not confront the contractor or enter the site. From a safe, lawful position, record what you can see, check the relevant planning records, identify whether the concern is planning or building control, and report it to the authority responsible for the site. The local authority decides whether a breach exists and whether enforcement is justified; a report alone does not guarantee action.
The procedure and deadlines depend on the country and local authority. The enforcement details in this article apply specifically to England. Ireland has a separate planning system, and other jurisdictions may use different notices, time limits and appeal routes.
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1. Make the situation safe before doing anything else
Construction can involve unstable structures, excavations, machinery, asbestos or live services. Do not cross a boundary, enter a building site, move materials, speak aggressively to workers or try to stop the work yourself. Observe only from land or a viewpoint you are entitled to use.
If there is an immediate risk of collapse, fire, electrocution, a serious injury or another urgent hazard, use the appropriate emergency or site-safety reporting route for your location. Planning enforcement is not an emergency response service. A routine planning complaint should never delay action to protect people from an immediate danger.
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2. Establish which country and authority govern the site
Before relying on a deadline or notice description, identify the jurisdiction. The address of the work normally determines the responsible authority, not the address of the person making the report.
- England: the local planning authority (LPA) investigates suspected breaches of planning control. Building-regulations concerns go to the relevant building-control service.
- Ireland: the Office of the Planning Regulator advises that if you think land is being developed or used without, or contrary to, planning permission, your first step is to contact the planning authority. Do not apply England’s notice procedures or time limits to Ireland.
- Elsewhere: use the planning and building-control systems for the local jurisdiction. Their forms, evidence requirements, enforcement powers and limitation periods may differ.
If you are unsure which council covers the site, use the address-search facility on the relevant government or council website, then confirm that the team you contact handles planning enforcement rather than building control, highways, environmental health or another function.
3. Record observable facts without trespassing
A strong report describes what you saw, where and when, rather than asserting a legal conclusion you cannot yet prove. Create a dated record while the work is still visible.
Information to capture
- The full site address, including a flat, plot or rear-land description if relevant.
- The precise location of the work on the property: rear extension, roof, outbuilding, boundary-side wall, excavation or another identifiable area.
- What is happening or has happened, such as demolition, foundations, a change of use, new floors, an altered roofline or a structure close to a boundary.
- Dates and times when you observed the activity, and whether it is ongoing, paused or apparently complete.
- How the work appears to affect you, for example by changing overlooking, access, drainage, light or the use of land. Keep this as an observation, not a legal finding.
- Names or reference numbers shown on any site notice, planning board or correspondence, if visible from a lawful position.
Take photographs only where you can do so safely and lawfully. Keep the original files with their dates and do not edit them in a way that removes location or timing information. Croydon Council asks complainants for the address, location and nature of suspected work; Wandsworth’s reporting form also requests the alleged breach, the completion date where known and photographs when available. These examples illustrate the type of information councils commonly need, but another authority may ask for different details.
4. Check whether the work is actually unauthorised
Do not label construction “illegal” merely because you have not seen a permission notice. In England, development may have planning permission, may be covered by a condition or limitation, or may qualify as permitted development. The planning history can also contain a lawful-development certificate or an application that is still being decided.
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Check the planning record
- Open the planning-register or planning-search service for the LPA covering the site.
- Search the exact address and nearby references. Older applications may use a different property description or former numbering.
- Read the decision notice, approved drawings and conditions, not just the application title. Compare the approved scale, position, use and materials with what is being built.
- Check whether an application is pending, whether an appeal has been lodged, and whether a condition or limitation controls the work.
- Consider whether the work could be permitted development. The answer depends on the type of development, the property, its location and applicable limitations.
For England, the government describes a breach of planning control as “the carrying out of development without the required planning permission; or failing to comply with any condition or limitation subject to which planning permission has been granted.” Whether that definition applies is for the authority to assess from the facts and planning law.
5. Choose the correct reporting route
Use the suspected rule, responsible authority and urgency to select the route. One complaint cannot substitute for another.
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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errors| What you suspect | First contact | Typical information | What this route does not decide |
|---|---|---|---|
| Development without required permission or work contrary to a planning condition or limitation | The LPA’s planning-enforcement form or published enforcement contact | Address, exact location, nature of work, dates, alleged breach and safe photographs | Building-regulations compliance, ownership, boundary title, party-wall rights or immediate site safety |
| Failure to meet building regulations, unsafe structural work or missing building-control approval | The relevant building-control service for the property | Address, type of building work, observed safety or compliance concern and dates | Whether planning permission was required or whether a private boundary right exists |
| Boundary, ownership, party-wall damage or private nuisance | A qualified property professional, surveyor or solicitor; use any statutory party-wall route that applies | Title plans, agreements, notices, measurements, photographs and damage records | A planning authority’s decision on enforcement |
| Immediate danger to people or property | The emergency or site-safety service appropriate to the location | Exact hazard, location and people at risk | A routine planning investigation |
Bristol City Council’s planning-enforcement information expressly excludes boundary disputes, party-wall disputes, land-ownership investigations and site health-and-safety complaints from that reporting route. Other councils may describe their remit differently, so read the authority’s instructions before submitting.
6. Submit a factual planning-enforcement report in England
Use the LPA’s published form or contact route. State that you are reporting suspected unauthorised work and separate facts you observed from matters you do not know.
Suggested report structure
- Identify the site and the date you first observed the work.
- Describe the physical work precisely: for example, “a two-storey addition is being built at the rear” rather than “the owner is breaking the law.”
- Explain what appears inconsistent with the planning record, such as a different footprint, height, location, use or condition.
- List the dates of observations and state whether the work is continuing or appears complete.
- Attach photographs and relevant application or decision references, keeping copies of everything submitted.
- Say clearly what you cannot establish, such as the completion date or whether a permission is pending.
Ask for a submission confirmation or case reference. Councils often restrict disclosure of complainant details, but confidentiality policies vary; read the privacy statement and do not assume that anonymity or a particular response time is guaranteed.
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7. Understand what an English planning authority may do
An LPA investigates suspected breaches and decides whether formal action is expedient. It may gather information, inspect records and the site, communicate with the owner, or decide that no breach or no proportionate action is established. Reporting is not an order to demolish and does not guarantee that work will stop.
Planning contravention notice
A planning contravention notice (PCN) can require information about operations or activities on land and may invite a constructive response about remedy. It is not a mandatory preliminary step in every case. If a person receives a PCN, the government guidance says it must be answered within 21 days; failing to respond within that period is an offence. The notice itself should be read carefully, and advice should be obtained promptly if any answer could affect enforcement or an appeal.
Enforcement notice
An enforcement notice should set out the authority’s view of the breach, the steps required to remedy it or stop an activity, and information about appeal rights. The recipient, not a neighbour who made the report, is normally the person who must comply or appeal. A notice can have strict dates, so obtain case-specific advice rather than relying on informal discussions.
Temporary stop notice
A temporary stop notice can require an activity that breaches planning control to stop immediately. It is a specific statutory tool, not something a complainant can issue personally. If work continues despite a notice, report that fact to the authority using the reference and instructions provided.
8. If the construction is on your own property
Owners sometimes discover that their contractor started work without the necessary permission, or that completed work differs from the approved drawings. Stop treating the matter as an ordinary application question once the authority has contacted you or served a notice.
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- Ask a qualified planning professional to assess whether permission was required, whether the built work matches an approval and what remedy is realistic.
- Do not assume that a retrospective application will be accepted or granted.
- In England, government guidance describes one opportunity to seek permission after the event through a retrospective planning application or a specified appeal ground. The LPA may decline to determine a retrospective application after an enforcement notice has been issued.
- Follow every instruction and deadline in a notice. An informal promise to alter the work does not replace a formal response or appeal.
9. England’s enforcement time limits are date- and fact-sensitive
Current government guidance describes a 10-year enforcement period for operational development substantially completed on or after 25 April 2024, and a 4-year period for operational development substantially completed before that date. Transitional arrangements and routes dealing with deliberate concealment can affect the analysis.
These periods are not a simple “old work is immune” rule. The relevant completion date, the type of breach, evidence of concealment and transitional provisions all matter. A council may need to establish facts before deciding whether time has expired. Verify the law in force for the case and obtain advice before relying on an apparent age of the building.
10. Keep planning, building control and private rights separate
Planning permission and building regulations are separate systems. Planning addresses land use and development control; building control addresses technical standards and construction compliance. A report that permission is missing does not prove a building-regulations breach, and a building-control failure does not automatically establish a planning breach.
Likewise, a planning investigation normally will not determine who owns a strip of land, whether a wall is party-owned, whether a neighbour has interfered with an easement, or whether construction has caused recoverable private damage. Preserve evidence and use the appropriate professional or legal route for those issues. If damage is occurring, record its condition before and during the work and notify your insurer where appropriate.
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11. What to do after you report
Save the completed form, confirmation email, case number, photographs and every letter. Keep a dated log of new work, access restrictions, noise, damage or changes visible from your property. Follow the council’s stated communication channel rather than sending repeated reports that contain no new information.
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Response times vary between authorities and case types. One council’s published target cannot establish another council’s timetable. If the authority asks for clarification, answer accurately and distinguish new observations from assumptions. If you receive a formal notice, appeal document or court paper, treat its stated deadline as urgent and obtain local professional advice immediately.
12. When professional advice is worth the cost
Prompt advice is particularly important when an enforcement notice, breach-of-condition notice, stop notice or court document arrives; when the work is on your own land; when ownership or a boundary is disputed; when a party wall or structural damage is involved; or when the completion date could affect an England time-limit argument.
Choose someone qualified for the issue: a planning solicitor or planning consultant for planning enforcement, a building professional for technical compliance, and a property solicitor or surveyor for title, boundary or party-wall matters. Ask what evidence they need and which deadline governs the next step. No adviser can promise that a council will prosecute, permit, remove or regularise the work.
Practical checklist
- Stay outside the site and avoid confrontation.
- Call the appropriate emergency or safety service if there is immediate danger.
- Record the address, exact location, work, dates and visible effects.
- Take only safe, lawful, dated photographs.
- Search the planning history and consider permitted development before alleging a breach.
- Send planning concerns to the LPA and building-regulations concerns to building control.
- Keep the submission confirmation, reference number and correspondence.
- Respond to formal notices within the stated period; in England, a PCN response period is 21 days.
- Obtain local advice for notices, appeals, ownership, boundaries, party walls or damage.
The safest approach is controlled and evidence-led: establish the jurisdiction, describe what can actually be observed, use the correct authority, and treat every formal notice or deadline as a separate legal step.
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