Poly B replacement permits in London
What London actually publishes about permitting a residential repipe, verified August 6, 2026.
Is a permit required?
Yes for plumbing system work: adding, removing or relocating fixtures and drainage installation, replacement or repair all require a permit, with same-location fixture swaps exempt. The city's water pages separately confirm plumbing permits for water service pipe replacement. Confirm interior repipe scope with the Building Division.
Who can pull the permit
Property owners, or representatives carrying a letter from the owner authorizing them as agent.
Inspections
Required inspections are listed on the permit card, booked online, by email, or by phone, cancelled at least 24 hours ahead, with the approved drawings kept on site.
Fees
Minimum permit fee about $260 under the city's building by-law, with project-specific pricing above that.
Timelines
Most residential permits are processed within ten business days once the application is complete.
Who administers it
City of London Building Division; Service London portal, Path2Approval counter at City Hall.
What London doesn’t publish
In keeping with this site’s rule of never guessing, these details were not verifiable from London’s published materials and should be confirmed directly with the municipality:
- ?Inspection stage list beyond the permit card.
- ?Explicit interior repipe wording.
How this fits the bigger job
The permit and inspection record is part of the documentation package your insurer will want after a repipe, alongside the completion certificate. The insurance chapter covers that package, and the cost guide covers what the whole job runs. The London city profile shows how much of the local housing stock sits in the Poly B era.
Sources for this page
- City of London building permit pages and water system pages
- Ontario Building Code
Verified against London’s published municipal materials on August 6, 2026. Rules and fees change without notice; confirm with the municipality before starting work. This page is not legal or code advice.
Published by Poly B Plumbing Guys
This library is maintained by the team that replaces Poly B every day across Alberta and BC. Red Seal certified plumbers, full remove-replace-restore service including drywall and paint, a 25-year warranty, and the completion certificate insurers ask for.
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