Hamilton · City of Hamilton
Basement Flooding Rebate in Hamilton
Up to $2,000 for Hamilton homeowners through the City of Hamilton Protective Plumbing Program (3P).
Last verified June 2026
Hamilton's Protective Plumbing Program (3P) gives a grant of up to $2,000 toward a backwater valve and related works (a sump pump installed with the valve, plus downspout disconnection). Important: to get the full $2,000 you must use a contractor from the City's pre-qualified list — using an outside contractor caps the backwater valve grant at just $500.
Why Hamilton homes need this
Hamilton has hundreds of identified basement-flooding hot spots, concentrated in older neighbourhoods and the lower city, where combined sewers can surcharge during heavy storms. A backwater valve plus a sump pump is the core protection the City funds.
What the rebate covers
Combined under the up to $2,000 program cap. Per-measure limits may apply — confirm current amounts with City of Hamilton before you start.
Read this before you spend a dollar
To receive the full $2,000 grant you must use a City pre-qualified contractor — an outside contractor caps the backwater valve grant at $500. A CCTV drainage video is required for every 3P grant, and a building permit is required (its cost is reimbursed on top of the grant).
Who qualifies
- •You own a single-family residential home with a basement
- •The home is connected to the City of Hamilton sewer system
- •You have not received a backwater valve grant for the property before
- •Work completed by a plumber/drain contractor licensed in Hamilton
How to apply
- 1Complete the Protective Plumbing Assessment Form and a CCTV video of your drainage.
- 2Apply and wait for a confirmation letter stating your approved grant (based on the lowest quote).
- 3Obtain the required building permits.
- 4Have a licensed contractor complete the work within six months, then submit documentation for reimbursement.
A building permit is required for backwater valve and sump pit/pump installation; the permit cost is reimbursed in addition to the grant.
Free assessment for your Hamilton home
Get connected with a licensed contractor who handles Hamilton flood-prevention rebates — they confirm what you qualify for, the pre-approval, and the paperwork. Free, no obligation.
Request free assessment →Other rebates you may be able to stack
Protective Plumbing Loan Program (City of Hamilton)
A loan of up to $2,000 to cover eligible costs — such as a sump pump installed with a backwater valve — that exceed the 3P grant.
Downspout disconnection
$75 per downspout when completed by a pre-qualified contractor, with or without a backwater valve.
Hamilton areas covered
The program applies city-wide. Hamilton neighbourhoods include:
Common questions
How much is the Hamilton basement flooding rebate?
Hamilton's Protective Plumbing Program (3P) gives a grant of up to $2,000 toward a backwater valve and related works (a sump pump installed with the valve, plus downspout disconnection). Important: to get the full $2,000 you must use a contractor from the City's pre-qualified list — using an outside contractor caps the backwater valve grant at just $500.
Do I need a permit or pre-approval?
To receive the full $2,000 grant you must use a City pre-qualified contractor — an outside contractor caps the backwater valve grant at $500. A CCTV drainage video is required for every 3P grant, and a building permit is required (its cost is reimbursed on top of the grant).
Who installs the work?
The work must be completed by a qualified, licensed contractor or plumber. A licensed contractor can confirm what you qualify for, handle the permit, and complete the paperwork.
Other areas
- Basement Flooding Rebate in Mississauga
- Basement Flooding Rebate in Brampton
- Basement Flooding Rebate in Vaughan
- Basement Flooding Rebate in Richmond Hill
- Basement Flooding Rebate in Markham
- Basement Flooding Rebate in Oakville
- Basement Flooding Rebate in Burlington
- Basement Flooding Rebate in Caledon
- Basement Flooding Rebate in Milton
- City of Toronto — Basement Flooding Protection Subsidy
Source: City of Hamilton Protective Plumbing Program (3P). Last verified June 2026. ClaimRebate.ca is independent and not affiliated with the City of Hamilton. Official program page →