Poly B replacement permits in Hamilton
What Hamilton actually publishes about permitting a residential repipe, verified August 6, 2026.
Is a permit required?
Yes. Hamilton's permit list covers new plumbing, relocated plumbing, and installation of internal plumbing, with only same-location fixture replacement exempt. Distribution piping replacement isn't named explicitly, so confirm repipe scope with the Building Division.
Who can pull the permit
The property owner, or an agent acting on the owner's behalf, through the city's customer portal.
Inspections
Hamilton publishes the full ladder: water service pipe inspection before backfill, underground building drains under test, plumbing rough-in with all above-ground supply and drainage piping installed and under air or water test before the structural inspection, then final. The city commits to inspections within two business days of a request.
Fees
Set by the Building Permit By-law fee schedule; where no new floor area is created the fee is one percent of the value of work, subject to a minimum fee. Confirm the current minimum with the Building Division.
Timelines
Inspections within two business days of request; plan review timelines aren't published.
Who administers it
City of Hamilton Building Division; customer portal for permits issued from mid-2026, phone or email for older ones.
What Hamilton doesn’t publish
In keeping with this site’s rule of never guessing, these details were not verifiable from Hamilton’s published materials and should be confirmed directly with the municipality:
- ?Minimum fee dollar amount.
- ?Plan review timeline.
- ?Explicit repipe scope 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 Hamilton city profile shows how much of the local housing stock sits in the Poly B era.
Sources for this page
- City of Hamilton building permit, inspection, and fee pages; Building Permit By-law 15-058
- Ontario Building Code
Verified against Hamilton’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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