London Conservation Areas: Bylaws, Permits & Development

Parks and Public Spaces Ontario 3 Minutes Read · published February 12, 2026 Flag of Ontario

In London, Ontario, conservation areas and river corridors are governed by a combination of municipal bylaws and the conservation authority regime. This guide explains when development or site alteration may require a permit, which authorities enforce the rules, and how to apply or appeal decisions for lands within or adjacent to conservation areas in London.

Overview of Restrictions

Development in conservation areas can be restricted by the City of London bylaw provisions that govern parks, waterfront and tree protection, and by the Upper Thames River Conservation Authority (UTRCA) regulation of development, interference with wetlands, and alterations to shorelines and watercourses. The UTRCA administers permit requirements for regulated areas on private and public lands in the watershed.[1] The City administers building and municipal permits for works within city boundaries that may overlap conservation authority regulated lands.[2]

Always check both the conservation authority and City permit requirements before starting work.

When a Permit Is Likely Required

  • Works within a river, stream or shoreline corridor.
  • Land grading, filling or excavation that may affect floodplain or wetland boundaries.
  • Removal or alteration of shoreline vegetation or wetlands.
  • Construction of docks, retaining walls or other structures adjacent to regulated watercourses.

Penalties & Enforcement

Enforcement is carried out by the Upper Thames River Conservation Authority for its regulated areas and by the City of London for municipal bylaw offences; joint enforcement or coordination may occur where jurisdictions overlap.[1][2]

  • Fines: specific monetary fines are not specified on the cited pages for every offence; see the enforcement pages for details.[1]
  • Escalation: first, repeat and continuing offence ranges are not specified on the cited pages.
  • Non-monetary sanctions: orders to restore sites, stop-work orders and court proceedings are used by authorities where powers exist; exact remedies are detailed by the enforcing body.[1]
  • Enforcer: Upper Thames River Conservation Authority and City of London By-law Enforcement and Planning/Building divisions.[1]
  • Inspections and complaints: report suspected unauthorized work to the UTRCA or the City’s bylaw or planning contacts.
  • Appeals and review: specific appeal routes and statutory time limits are not specified on the cited pages; check the decision notices or contact the enforcing authority for appeal procedures.[1]
  • Defences/discretion: permits, variances or demonstrated reasonable mitigation may be considered; detailed discretionary grounds are set by the enforcing authority.
Failure to obtain required permits can result in orders to restore the site and potential fines.

Applications & Forms

The UTRCA publishes a permit application for regulated activities; the City of London publishes building permit and planning application forms. Specific application names, form numbers, fees and deadlines may be provided on each authority’s permit and planning pages; where a specific fee or form number is not shown on the cited page, it is not specified on the cited page.[1][2]

How to Comply

  • Check the UTRCA regulated areas map before planning any site work.
  • Contact UTRCA for a permit pre-application review if your work is near water or wetlands.
  • Obtain City building or planning permits where municipal approvals are required.
  • Report suspicious or unauthorized work to the UTRCA or City bylaw enforcement.
Early contact with regulators reduces delay and the risk of enforcement action.

FAQ

Do I need a permit for landscaping near the Thames River?
Possibly. Work that changes grade, vegetation or water flow near the river may require a UTRCA permit and/or City approval — contact UTRCA and the City to confirm.[1][2]
Where do I apply for a conservation authority permit?
Apply through the Upper Thames River Conservation Authority permit process; see the UTRCA permit information page for application steps and submission details.[1]
What happens if I start work without a permit?
Authorities may issue stop-work orders, require restoration, and pursue fines or court action; specific penalties are set by the enforcing body and may not be fully listed on a single cited page.[1]

How-To

  1. Identify whether your property or project falls inside a regulated area by consulting the UTRCA mapping and the City’s planning maps.[1]
  2. Contact the UTRCA early for a pre-application discussion about permit requirements and supporting studies.
  3. Prepare and submit required conservation authority and municipal permit applications, including site plans and any technical reports.
  4. Follow any conditions on permits, obtain city building permits if required, and schedule inspections as directed.

Key Takeaways

  • Both the UTRCA and the City of London can require permits for work in or near conservation lands.
  • Always check conservation authority regulated area maps before starting work.
  • Contact regulators early to reduce risk of delays and enforcement.

Help and Support / Resources

  1. [1] Upper Thames River Conservation Authority - Regulated Areas & Permits
  2. [2] City of London - Building Permits & Inspections
  3. [3] Ontario Regulation 166/06 - Conservation Authorities Act (development, wetlands and shorelines)

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