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Building Permits in London, Ontario

Everything you need to know about building permit requirements, zoning by-laws, development charges, and conservation authority rules for residential construction in London. Get an AI-powered feasibility report for your specific property in under 5 minutes.

London Building Department

Phone

519-661-4555

Address

300 Dufferin Ave, London, ON N6A 4L9

Key Zoning & Permit Facts for London
  • Thames River runs through the city — flood plain considerations
  • London Plan is the new Official Plan guiding growth
  • Heritage districts in Old East Village and Woodfield
  • University area has specific rental licensing requirements
  • Rapid growth in north and south London
Zoning By-law

London is governed by Zoning By-law Z-1. The zoning by-law determines what you can build on your property, including permitted uses, building height, lot coverage, setbacks from property lines, and parking requirements.

A PermitSnapshot report analyzes your specific property against the applicable zoning by-law and identifies any potential issues or variance requirements before you apply for a building permit.

Conservation Authority

London is within the jurisdiction of the Upper Thames River Conservation Authority (UTRCA).

If your property is near a waterway, wetland, shoreline, or flood-prone area, you may need a permit from the conservation authority under Ontario Regulation 97/04 before construction can begin. PermitSnapshot checks conservation authority mapping for every report.

Common Permit Projects in London
Basement apartmentDeck constructionGarageAdditionNew home constructionGarden suite

These are the most common residential construction projects in London that typically require a building permit. A PermitSnapshot report covers all of these project types and more.

Frequently Asked Questions: London Building Permits

How do I get a building permit in London?

Contact Building Division at 519-661-4555. You'll need to submit plans showing compliance with Zoning By-law Z-1. The typical timeline is 10-15 business days (residential). Run a PermitSnapshot report first to identify any zoning issues before you apply.

What are the development charges in London?

Development charges in London average $25,000-$40,000 per unit. These charges fund infrastructure needed to support new development. PermitSnapshot includes development charge estimates in every report.

Which conservation authority covers London?

London is covered by Upper Thames River Conservation Authority. Properties near waterways or flood-prone areas may require a conservation authority permit.

Quick Stats

Avg. Permit Timeline

10-15 business days (residential)

Dev. Charges (per unit)

$25,000-$40,000 per unit

Conservation Authority

UTRCA

Zoning By-law

Zoning By-law Z-1

Permit Types Available

Building Permit
Demolition Permit
Sign Permit
Pool Permit
Plumbing Permit

Get Your London Permit Report

AI-powered feasibility report for your specific London property. Zoning, setbacks, conservation, fees — in under 5 minutes.

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Professional Disclaimer: This is an AI-generated informational snapshot. It is NOT legal, engineering, architectural, or permitting advice. All data must be verified with the municipality and qualified licensed professionals.