Renters' Rights Act 2025, Phase 1 commencement
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England

Planning Law

Planning Enforcement UK — Enforcement Notices, Limitation Periods, and Defending Breaches

How local planning authorities investigate and remedy planning breaches — enforcement notices, breach of condition notices, stop notices, injunctions — and the limitation periods that provide immunity from enforcement after a fixed period.

13 min readUpdated 8 June 2026Last reviewed: 17 May 2026planningenforcementhmolimitation-period

Types of Planning Enforcement Action

The LPA has several enforcement tools under the Town and Country Planning Act 1990 (TCPA 1990): (a) Planning contravention notice (s.171C) — investigatory, not remedial; failure to respond within 21 days is a criminal offence; (b) Enforcement notice (s.172) — primary enforcement tool; specifies the breach and steps to remedy it; registered as a local land charge visible on property searches; compliance suspended if appealed in time; (c) Breach of condition notice (s.187A) — no appeal right; direct criminal offence to breach; used where planning conditions are violated; (d) Stop notice (s.183) — emergency cessation of operations; LPA must pay compensation if wrongly served; cannot prohibit use of a building as a dwelling; (e) Injunction (s.187B) — High Court or county court; faster than enforcement notice; contempt of court to breach.

  • Planning contravention notice (s.171C): investigatory; 21-day response obligation; criminal offence not to comply
  • Enforcement notice (s.172): registered as a local land charge; appeal suspends compliance; appeal must be lodged before the compliance date
  • Breach of condition notice (s.187A): no appeal right; directly enforceable; criminal offence to fail to comply
  • Stop notice (s.183): can only prohibit operations — not use of a dwelling; LPA pays compensation if wrongly served
  • Injunction (s.187B): faster than enforcement notice; criminal contempt to breach; used in urgent cases

Limitation Periods — Time-Limited Immunity from Enforcement

TCPA 1990 s.171B sets out the limitation periods after which enforcement is time-barred. Pre-April 2024 rules: 4-year period for unauthorised change of use to C3 dwellinghouse and for building operations; 10-year period for all other breaches (including HMO conversions, planning condition breaches). Post-April 2024 (Levelling-Up and Regeneration Act 2023): a single 10-year limitation period applies to ALL breaches from 25 April 2024. Old breaches before that date remain subject to the previous rules. Deliberately concealing a breach from the LPA suspends the limitation period (Welwyn Hatfield BC v Secretary of State [2011] UKSC 15).

  • Pre-April 2024: 4-year period for C3 conversion and building works; 10-year period for HMO conversions and condition breaches
  • Post-April 2024: single 10-year period for ALL breaches; the 4-year rule is abolished for new breaches
  • Concealment: deliberately hiding a breach from the LPA suspends the limitation period — it may never expire
  • Time runs from the date of first operative use (for change of use) or substantial completion (for building works)
  • Lawful Development Certificate: apply to the LPA once the limitation period expires to confirm the use is lawful

Appealing an Enforcement Notice

A landlord can appeal an enforcement notice to the Planning Inspectorate under TCPA 1990 s.174. The appeal must be lodged before the compliance date. A valid appeal suspends the notice. The seven grounds of appeal include: (a) planning permission ought to be granted; (b) the breach did not occur; (c) the matters are not a breach of planning control; (d) the limitation period had expired; (e) the notice was not properly served; (f) the steps required exceed what is necessary; (g) the compliance period is unreasonably short. The Inspector can allow, dismiss, or vary the notice. Making a retrospective planning application in parallel is often the fastest route to regularise an unauthorised use.

  • Appeal deadline: must lodge with the Planning Inspectorate BEFORE the compliance date specified in the notice
  • Valid appeal suspends the enforcement notice — compliance requirement paused during appeal
  • Ground (d) (limitation period): if the LPA was time-barred, the Inspector must quash the notice
  • Retrospective planning application: LPA must consider it; if granted, enforcement notice falls
  • LPA has discretion not to enforce — a constructive approach demonstrating no harm may prevent notice being issued

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