A planning enforcement notice is not simply a request to put something right. Once the notice has taken effect, the compliance period has expired and there is no outstanding appeal, failure to comply can become a criminal offence. For homeowners, landlords, developers and businesses in England, the consequences can include prosecution, an unlimited fine and additional financial exposure.
The safest time to assess the position is before those consequences arise. Someone facing possible prosecution may seek a planning enforcement prosecution solicitor or another planning-law professional to review the notice, appeal history and evidence of compliance. Aldwych Legal supports clients across England with planning disputes, enforcement responses and strategic case preparation.
Start With the Exact Notice and Its Dates
An informal enforcement letter is different from a statutory enforcement notice. A council may initially investigate an alleged breach through correspondence, site visits or requests for information. Once an enforcement notice is served, however, specific statutory requirements apply.
The notice should identify the alleged breach, explain what steps must be taken or which activities must cease, state when it takes effect and specify the period allowed for compliance.
The effective date and compliance period serve different purposes. The effective date determines when the notice comes into force and is crucial to any appeal. The compliance period determines when the required remedial action must have been completed.
Protect Any Appeal Before the Notice Takes Effect
A recipient who wants to appeal a planning enforcement notice must act before the effective date. The Planning Inspectorate must receive the appeal before the notice takes effect.
A valid appeal prevents the notice from taking effect while the appeal remains outstanding. If the appeal is withdrawn or finally determined and the notice remains in force, the requirements must then be addressed in accordance with the notice as upheld or varied.
Negotiating with the council does not by itself extend the appeal deadline. Nor should a proposed retrospective application be assumed to protect the right of appeal.
Aldwych Legal can assist with organising the planning history, notice and supporting evidence where appeal and compliance issues need to be considered together.
When Does Non-Compliance Become an Offence?
Section 179 of the Town and Country Planning Act 1990 deals with failure to comply with an enforcement notice. After the compliance period has ended, the owner of the land is in breach where a required step has not been taken or an activity required to cease is continuing. An owner in breach can commit a criminal offence.
The legislation also applies to a person other than the owner who has control of, or an interest in, the land. Such a person must not carry on, cause or permit an activity that the notice requires to cease after the compliance period.
The precise position can therefore depend on ownership, control, what the notice requires and what actually happened after the deadline.
An Unlimited Fine Can Follow Conviction
Current government guidance confirms that a person convicted of failing to comply with an enforcement notice can receive an unlimited fine. The court must also have particular regard to any financial benefit that accrued, or appears likely to accrue, because of the offence. This can be significant where an unauthorised commercial or residential use continued to generate income after the notice required it to stop.
That means a fine should not be viewed as a predictable cost of continuing the breach. Where prosecution appears possible, obtaining planning enforcement legal advice early may help establish what remains outstanding and what evidence is available.
Confiscation Can Increase the Financial Risk
The financial consequences may go beyond the fine itself. Government guidance states that, after securing a conviction for failure to comply with an enforcement notice, a local planning authority can seek a confiscation order under the Proceeds of Crime Act 2002 to recover financial benefit obtained through unauthorised development.
This can be particularly relevant where continued unauthorised use has generated rent or other commercial income.
Information about enforcement notice legal assistance may help property owners understand how enforcement, prosecution risk and evidence-led case preparation interact.
The Council Can Carry Out the Required Works
Prosecution is not the authority’s only option.
Under section 178 of the Town and Country Planning Act 1990, where steps required by an enforcement notice have not been carried out within the compliance period, the local planning authority can enter the land and take those steps itself. It can then recover expenses reasonably incurred from the person who is the owner at that time.
Wilfully obstructing a person who is lawfully exercising those powers is itself an offence.
For an owner, this means that ignoring the notice can create both criminal and financial problems: prosecution may arise from non-compliance, while the authority may separately incur costs in completing required remedial work.
Keep Evidence of Every Compliance Step
Where the owner believes the notice has been complied with, evidence should be preserved.
Useful records may include:
- dated photographs showing completed works;
- contractor invoices and completion records;
- correspondence with the council;
- plans showing what was removed or altered;
- tenancy or business records showing that a prohibited use ceased; and
- technical documentation where relevant.
If only part of the notice has been complied with, the remaining requirements should be identified promptly.
Aldwych Legal supports evidence-led planning-dispute preparation where the extent or timing of compliance is contested.
Is There Any Defence to Prosecution?
For an owner prosecuted under section 179, legislation provides a defence where the owner can show that they did everything that could reasonably be expected of them to secure compliance with the notice.
This is fact-sensitive. It should not be treated as a reason to delay action while the compliance period is still running.
The better approach is usually to identify practical obstacles early, keep records of attempts to comply and communicate with the authority where genuine difficulties arise.
A local planning authority also has statutory powers in appropriate circumstances to relax requirements in its own enforcement notice or extend the compliance period. Any change should be formally confirmed rather than assumed from informal discussions.
Do Not Assume Retrospective Permission Stops Enforcement
A retrospective planning application may sometimes be relevant, but it does not automatically suspend an enforcement notice or remove the need to comply with an existing deadline.
Current rules can also affect whether a related retrospective application or ground (a) enforcement appeal is available. The procedural history should therefore be checked before choosing that route.
Planning permission must also be separated from Building Regulations, licensing, restrictive covenants, title rights and other property-law requirements. Resolving an enforcement notice does not necessarily resolve those separate obligations.
Conclusion
Failure to comply with an enforcement notice can move a planning dispute into the criminal courts. Once the compliance period has expired and there is no outstanding appeal, continued non-compliance can expose an owner or other responsible person to prosecution and an unlimited fine.
Financial consequences may extend further through confiscation proceedings or the council’s power to carry out outstanding works and recover reasonable expenses. Early action is therefore much safer than waiting for prosecution correspondence to arrive.
Aldwych Legal supports clients across England with planning enforcement responses and strategic case preparation. Reviewing the notice, protecting any appeal deadline, documenting compliance and addressing practical difficulties early can reduce the risk of a planning dispute becoming a more serious criminal and financial problem.
