Markham · City of Markham
Basement Flooding Rebate in Markham
Weeping tile disconnection + sump pump up to $5,000 · backwater valve up to $2,000 for Markham homeowners through the City of Markham Private Plumbing Protection Rebate.
Program facts last verified September 4, 2026 against City of Markham sources — programs can change or close at any time; confirm current amounts with City of Markham before signing a contract.
Storm season is here. July's storms flooded 1,900+ basements in Ottawa and drenched the GTA. Most Ontario cities pay part of the cost of flood protection — before the next one.
Find my city’s program →Basement flooded right now? Emergency steps first →
Markham's Private Plumbing Protection Rebate pays fixed maximums per measure: up to $5,000 for disconnecting weeping tile from the sanitary lateral with a sump pump, $3,000 for a gravity redirect to the storm lateral, $2,000 for an outdoor backwater valve ($1,750 indoor), and $2,500 for relining or repairing a storm or sanitary lateral. Pre-approval from the City's Environmental Services is required before any work begins, and Council has extended the program to the end of April 2027.
Why Markham homes need this
Many Markham homes still have foundation drains (weeping tiles) connected to the sanitary sewer. Disconnecting them and adding a sump pump and backwater valve is the strongest protection against sewer-backup flooding, especially in flood-prone areas.
What the rebate covers
Combined under the weeping tile disconnection + sump pump up to $5,000 · backwater valve up to $2,000 program cap. Per-measure limits may apply — confirm current amounts with City of Markham before you start.
Read this before you spend a dollar
You must get pre-approval from Markham's Environmental Services AND obtain permits before any work starts — installing first can disqualify the rebate. Council has extended the program to the end of April 2027: building permits by April 30, 2027, rebate applications by July 31, 2027.
Who qualifies
- •Property in Markham in a flood-prone area, or with demonstrable flood risk
- •No contraventions, work orders or outstanding municipal requirements, fines, taxes or fees on the property
- •Downspouts disconnected from the City's sewer system
- •Approval of the work from the City's Environmental Services BEFORE installation
- •Required building permits obtained — by April 30, 2027 under the current extension
How to apply
- 1Confirm eligibility and disconnect your downspouts from the City sewer.
- 2Hire a licensed plumber for a CCTV inspection of your laterals and submit the technical review application to Environmental Services.
- 3Receive the City's approval, then obtain the building permit (by April 30, 2027).
- 4Have a qualified contractor complete the work and pass inspection, then submit your rebate application with paid invoices (by July 31, 2027).
Building permits and City pre-approval are required before installation; under the current extension permits must be obtained by April 30, 2027.
Free assessment for your Markham home
Get connected with a licensed contractor who handles Markham 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
Other York Region municipalities
Vaughan (up to $750) and Richmond Hill (up to $1,500) run their own backwater valve programs — see their pages.
Markham areas covered
The program applies city-wide. Markham neighbourhoods include:
Common questions
How much is the Markham basement flooding rebate?
Markham's Private Plumbing Protection Rebate pays fixed maximums per measure: up to $5,000 for disconnecting weeping tile from the sanitary lateral with a sump pump, $3,000 for a gravity redirect to the storm lateral, $2,000 for an outdoor backwater valve ($1,750 indoor), and $2,500 for relining or repairing a storm or sanitary lateral. Pre-approval from the City's Environmental Services is required before any work begins, and Council has extended the program to the end of April 2027.
Do I need a permit or pre-approval?
You must get pre-approval from Markham's Environmental Services AND obtain permits before any work starts — installing first can disqualify the rebate. Council has extended the program to the end of April 2027: building permits by April 30, 2027, rebate applications by July 31, 2027.
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 Oakville
- Basement Flooding Rebate in Burlington
- Basement Flooding Rebate in Caledon
- Basement Flooding Rebate in Milton
- Basement Flooding Rebate in Hamilton
- Basement Flooding Rebate in Ottawa
- City of Toronto — Basement Flooding Protection Subsidy
Source: City of Markham — Basement Flooding and Sewer Back-up Prevention page (Private Plumbing Protection Rebate Program rebate table and process). Amounts are per-measure maxima; the City states no combined per-property maximum. Last verified September 4, 2026. ClaimRebate.ca is independent and not affiliated with the City of Markham. Official program page →