Torrential rain can strike the North Shore in a matter of hours, leaving basements flooded, foundations damaged and units unusable in a plex or multi-unit building. Yet, according to La Presse of June 24, 2026, affected owners are entitled to no direct government financial aid for this damage — only their private insurance. For an owner of a plex or income property on the North Shore, this reality raises an urgent question: are your protections truly suited to a building with several rental units?
Why doesn't the government compensate you after torrential rain?
Government disaster-aid programs apply to recognized flood zones (river flooding), not to damage caused by torrential rain. For plex and multi-unit building owners on the North Shore hit by torrential downpours, the only recourse is private insurance.
The distinction is fundamental and often misunderstood by owners of income properties: government flood aid applies only to properties located in recognized flood zones, exposed to river flooding. For damage caused by torrential rain — rapid accumulation of rainwater, backup of overloaded sewers, infiltration through windows and foundations — the Québec government offers no direct compensation.
"Owners affected by torrential rain generally have access to no government financial aid for the damage. Their only recourse remains insurance."
— La Presse, "Flooding: no financial aid for damage attributable to torrential rain", June 24, 2026This is a particularly worrying reality for plex owners on the North Shore: contrary to what many believe, having several damaged units in a single building does not grant access to larger emergency aid. The government only offers preventive grants — for work carried out before the next disaster, not to repair damage already suffered.
Source: La Presse — "Flooding: no financial aid for damage attributable to torrential rain" (June 24, 2026)
What your multi-unit insurance really covers
A standard property insurance policy for a plex and income property generally excludes surface water and sewer backup. These two protections require separate endorsements. Without them, a claim after torrential rain can be denied entirely.
The most common mistake made by owners of plexes and income properties on the North Shore is to believe that their policy covers all water damage. In reality, standard insurance covers a limited range of damage — and events tied to torrential rain are often explicitly excluded from it. Here are the main distinctions:
| Type of water damage | Standard policy | Endorsement needed |
|---|---|---|
| Internal pipe leak (burst pipe) | ✓ Generally covered | No |
| Appliance leak | ✓ Generally covered | No |
| Infiltration through the roof (windstorm) | Depends on policy — check | Sometimes |
| Municipal sewer backup | ✗ Generally excluded | Yes — backup endorsement |
| Surface water (torrential rain) | ✗ Generally excluded | Yes — overland water endorsement |
| Rising groundwater | ✗ Excluded | Limited or unavailable |
| River flooding (flood zone) | ✗ Excluded | Very limited depending on insurer |
For a plex or a multi-unit building on the North Shore, this insufficient coverage is multiplied: several units can be affected at once, and each rental unit represents a loss of income if it stays uninhabitable for a long time. The North Shore, with its many plexes built in the 1960s–1990s, is particularly exposed because of sometimes aging drainage networks.
Source: Radio-Canada — "Torrential rain and flooding: is your home insured?"
The essential endorsements for your income property on the North Shore
Four endorsements are a priority for any plex or multi-unit building owner on the North Shore: sewer backup, surface water, loss of rental income, and coverage of every unit. Check these four points with your broker before the next rainstorm.
If you own a plex, triplex, quadruplex or larger income property on the North Shore, here are the insurance endorsements to check or add to your policy immediately:
The 4 priority endorsements for your plex
- Sewer backup endorsement: covers damage caused by the backflow of municipal sewers during heavy rain. Inexpensive, it is one of the most important protections for plex basements on the North Shore.
- Overland water endorsement: covers water that enters your building through doors, windows, garage entrances or the foundation during torrential rain.
- Rental-income-loss insurance: reimburses lost rent during the repair period if a unit becomes uninhabitable. Crucial for keeping up your mortgage debt service.
- Coverage of every unit: make sure explicitly that your policy covers all the rental units, not just your personal unit.
Review your policy with a broker who specializes in income properties. Conditions vary considerably from one insurer to another, and the deductible amount can have a major impact on how worthwhile each endorsement is. A broker who knows North Shore multi-unit buildings well can point you toward the best protections available for your type of building.
Note: some insurers may refuse the overland water endorsement for properties with a claims history or located in high-risk areas. If that is your case, shop around with several insurers — eligibility criteria vary.
2026 grants to protect your plex against flooding
Starting October 1, 2026, provincial grants of $700 to $1,000 will be available for preventive work in all buildings in Québec, including the North Shore. The City of Montréal already offers a 40% reimbursement through its RénoPlex program for small buildings.
While the government does not reimburse past damage, it does offer aid for work that reduces future risks for your plex or income property. Two programs deserve your attention:
Provincial flood-protection program (starting October 1, 2026)
Starting October 1, 2026, owners of buildings in Québec will be able to obtain between $700 and $1,000 to carry out eligible preventive work, including:
- Installing a sump pump (submersible pump)
- Installing a backwater valve (anti-sewer-backup valve)
- Purchasing flood barriers (mobile anti-flood barriers)
For properties located in a government-recognized flood zone, provincial aid can reach $35,000 for larger adaptation measures. This program applies across the entire Québec territory, including the North Shore.
Source: La Presse — June 24, 2026
RénoPlex program — City of Montréal (already available)
For owners of small residential buildings of 1 to 5 units on the Island of Montréal, the City has enhanced its RénoPlex program with an envelope of $10.3 million. The program reimburses 40% of the cost of eligible anti-flood work:
- Installing a backwater valve
- Watertight doors
- Filling a sloped garage entrance
- Installing a green roof
Source: Radio-Canada — "Montréal enhances its aid program to prevent flooding"
For plex owners on the North Shore (outside Montréal): check with your municipality to see whether a similar program exists. Terrebonne, Laval, Blainville, Mascouche, Repentigny and several other cities sometimes offer incentives for drainage and prevention work. The provincial program (starting October 2026) nevertheless remains available everywhere.
How to document a claim for a successful insurance reimbursement
If your plex on the North Shore suffers water damage, the quality of your documentation largely determines the success of your claim. Here is what you must do in the first hours after the disaster.
In the event of water damage in your multi-unit building on the North Shore, documentation is your best protection. Acting fast and being precise with your evidence can make the difference between an accepted claim and a denial.
- Photograph immediately every affected room in each unit, the damaged equipment and the visible origin of the problem (crack, backup, etc.)
- Keep all receipts tied to emergency work (pumping, industrial drying, temporary repairs)
- Notify your insurer as soon as possible — reporting deadlines are strict and can invalidate a late claim
- Document lost rental income: if a unit becomes uninhabitable, note the exact dates and the rent lost
- Keep the move-in inspection reports for each tenant — they demonstrate the prior condition and protect against disputes
⚠ Don't delay notifying your insurer
Most insurance policies for plexes and income properties set a maximum deadline to report a claim. A late notice can lead to a partial or total denial of the claim. If you have any doubt about your coverage, call your insurer even before starting any cleanup — some mitigation measures can invalidate the claim if they precede the inspection.
If a tenant is the source of the damage, your insurance policy may cover the damage and then pursue a recourse (subrogation) against the tenant's civil liability or their insurer. A well-documented move-in inspection is essential to clearly establish liability.
The impact of uncorrected water damage on your plex's value
Undeclared or poorly repaired water damage is one of the most common latent defects in plex and multi-unit building transactions on the North Shore. It exposes the seller to legal claims and can reduce the sale price by 5 to 15%.
A serious buyer — or their inspector — almost always detects the traces of past water damage: ceiling stains, mold odors, sagging floors, damp cracks in the foundation. As the seller of an income property in Québec, you have a legal obligation to disclose any known material damage, including a history of infiltration and claims.
Failing to disclose this information exposes you to latent-defect claims even after the deed of sale is signed — and these claims can be costly. Conversely, a well-documented claims history accompanied by proven professional repairs (invoices, inspection reports) considerably preserves the value of your plex on the North Shore and reassures potential buyers.
Here is the typical impact on the value of a multi-unit building:
| Situation | Estimated impact on price |
|---|---|
| Well-documented claims history, proven professional repairs | Minimal impact (< 2%) |
| Declared claims, partial or unproven repairs | –3% to –8% |
| Undisclosed claims discovered during the inspection | –8% to –15% + risk of legal claims |
| Active mold or untreated structural problem | May block the buyer's financing |
ImmoMulti buys plexes and multi-unit buildings on the North Shore as-is — including buildings with a known claims history. If you are in a difficult situation or want to sell quickly, a direct ImmoMulti offer spares you the complications of a traditional listing and lets you obtain a firm price without delay.
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