Mandatory Water Leak Detectors in Quebec Condos?

In a divided co-ownership, water damage is the leading source of insurance claims. A simple seepage under a water heater can cost tens of thousands of dollars in repairs, not to mention the impact on deductibles and insurance premiums. This raises a question we often hear from boards of directors: can water leak detectors be made mandatory in condos?

This article explains, in clear Quebec French, what the law allows in Quebec, the best practices for your by-laws of the immovable, and the practical steps for deploying these devices with your syndicate, condominium manager and co-owners.

What the law allows in Quebec

The syndicate’s mission is to ensure the preservation of the building, the maintenance of the common portions and the safeguarding of the rights pertaining to them (see section 1039 of the Civil Code of Quebec, on LégisQuébec). In this capacity, it may adopt reasonable prevention measures, such as installing water leak detectors, particularly where there is a demonstrated risk.

The by-laws of the immovable may impose rules relating to safety, use and maintenance that apply to the common portions and, within certain limits, to the private portions (see section 1066 of the Civil Code of Quebec). Such by-laws are adopted or amended at a meeting of the co-owners (annual general meeting or special meeting), with the majorities prescribed by the Civil Code of Quebec for the type of decision concerned. Where the measure affects the interior of the units (private portions), it must respect the destination of the building, must not unreasonably infringe on the rights of co-owners and must be justified by a safety or prevention objective.

Financially, expenses related to collective prevention measures affecting the common portions form part of the common expenses to be allocated (see section 1064 of the Civil Code of Quebec). For equipment required in the private portions, the by-laws may specify who is responsible for purchasing, installing and maintaining it (often the co-owner, under the syndicate’s supervision), as well as the penalties for non-compliance.

Useful references:

• LégisQuébec – Civil Code of Quebec, section 1039 (the syndicate’s mission): https://www.legisquebec.gouv.qc.ca/fr/document/lc/CCQ-1991?article=1039
• LégisQuébec – Civil Code of Quebec, section 1066 (by-laws of the immovable): https://www.legisquebec.gouv.qc.ca/fr/document/lc/CCQ-1991?article=1066
• LégisQuébec – Civil Code of Quebec, section 1064 (common expenses): https://www.legisquebec.gouv.qc.ca/fr/document/lc/CCQ-1991?article=1064

When can a detector become “mandatory”?

Several situations justify requiring a water leak detector through the by-laws of the immovable, always in compliance with the Civil Code of Quebec and the declaration of co-ownership:

• Insurer requirement: your insurer makes continued coverage or a premium reduction conditional on installing sensors or automatic shut-off valves in units at risk (for example, rooms containing a water heater or washing machine).
• Claims history: the divided co-ownership has experienced repeated water damage, documented in the board of directors’ and annual general meeting minutes.
• Technical risk: ageing risers, sensitive flooring or a lack of floor drains.
• Regulatory consistency: your declaration of co-ownership or current by-laws already provide for maintenance obligations for appliances that could cause a claim (for example, periodic replacement of water heaters). Adding detectors follows the same prevention logic.

In these situations, the board of directors can submit draft by-laws requiring, for example, one sensor with a local alarm in every bathroom and one sensor under every water heater, with proof of installation provided to the condominium manager.

Access to private portions and respect for privacy

The syndicate may require prevention measures in units where this is reasonable and necessary for the preservation of the building. Access to private portions must, however, follow the proper process: notice, a legitimate reason (inspection, urgent work or compliance verification) and respect for privacy. In practice, prioritize self-installation by co-owners with validation (dated photos, invoice and serial number), and schedule visits only as a last resort or during periodic inspections provided for in the by-laws.

For installation by a contractor, choose professionals who hold the appropriate licences and comply with industry standards. Also consult industry best practices for divided co-ownership:

• RGCQ – Resources and best practices: https://rgcq.org/

Deployment scenarios and responsibilities

Every divided co-ownership has its own reality. Here is a framework for allocating tasks and costs between the syndicate and co-owners. Adapt it to your declaration of co-ownership, the destination of the building and your insurer’s recommendations.

Also consider the following:

• Standardize the type of equipment (for example, sensors with an audible alarm and optional connectivity) to avoid a jungle of different devices.
• Specify minimum sensor locations: under water heaters, near washing machines, dishwashers and refrigerators with a water line.
• Document all installed devices (serial number, date and location) in the maintenance logbook (EUC), and keep the supporting documents in the syndicate’s records.

Practical steps for your board of directors

Here is a simple sequence, tested with syndicates we support, for adopting and deploying a detector program:

1. Risk assessment: review past claims and at-risk equipment (water heater age, risers and joints).
2. Consult the insurer: confirm requirements and potential impacts on the deductible and premium.
3. Legal advice: have the draft reviewed to ensure that it complies with the declaration of co-ownership and the Civil Code of Quebec.
4. Technology selection: establish a list of approved models and minimum locations for each bathroom or other room with water fixtures.
5. Draft by-laws: specify obligations, deadlines, progressive sanctions, proof of compliance, access procedures and medical/technical exceptions.
6. Notice and vote: include the item on the agenda for the annual general meeting (or special meeting); clearly explain the costs and benefits; have the resolution adopted by the required majorities.
7. Prepare the minutes: document the vote, procedures and timelines; publish the minutes within the required time.
8. Deployment: communicate with co-owners, provide frequently asked questions, allow a grace period and offer support for purchasing and installation.
9. Follow-up: send annual reminders for testing and battery replacement; conduct spot checks; update the maintenance logbook.
10. Review: adjust the by-laws based on experience and insurance requirements.

For day-to-day operations, a condominium manager can help you organize the inventory, reminders and follow-up. See our operations management services: multiRent – Services (operations).

What type of detector should you choose?

There are two main categories of equipment:

• “Puck” sensor with a local alarm: placed on the floor, it sounds as soon as it detects water. Advantages: inexpensive, easy to install and requires no plumbing. Limitations: no automatic shut-off, relies on batteries and on a neighbour hearing it.
• Sensor with a smart shut-off valve: when a sensor detects a leak, the valve shuts off the unit’s water supply. Advantages: significantly reduces the extent of damage and provides remote alerts. Limitations: requires installation by a plumber, costs more and requires maintenance.

Criteria for a board of directors to consider:

• Connectivity: Wi‑Fi (simple but depends on the unit’s router), mesh/LoRa (more robust, often through a syndicate gateway).
• Power supply: replaceable batteries and low-battery alerts.
• Centralized management: a dashboard for the syndicate to monitor sensor status and receive alerts.
• Compatibility with your policies: the ability to require a specific model or an approved list.
• Support and parts: local availability and clear documentation for co-owners.

If you hire a contractor to install shut-off valves, confirm their qualifications and applicable licences and take current Quebec standards into account. Consult the RGCQ for industry guides and information on divided co-ownership: RGCQ.

Financial and insurance impacts

A well-structured detector program can reduce the frequency and severity of claims, with positive medium-term effects on your premiums and deductible. The purchase and maintenance costs are often offset by avoiding a single serious water damage claim.

Here are some practical guidelines for the syndicate’s budget and accounting:

• Common expenses: the purchase of sensors for the common portions and, depending on your by-laws, a basic kit supplied to units may be charged to the common expenses (see section 1064 of the Civil Code of Quebec).
• Condo fees and penalties: if a co-owner fails to comply, a system of penalties may be provided for in the by-laws; verify its legality and proportionality with your legal adviser.
• Contingency fund: generally reserved for major replacements to the common portions; unit sensors do not fall within it.
• Transparent communication: explain the financial scenario at the annual general meeting and append it to the budget; keep the decisions in the minutes.

To explore the legal basis for these measures, refer directly to the Civil Code of Quebec on LégisQuébec:

• The syndicate’s mission (section 1039): official text
• By-laws of the immovable (section 1066): official text
• Common expenses (section 1064): official text

FAQ – Water leak detectors in condos

• Is it legal to require detectors in units?
  Yes, if this is provided for in by-laws of the immovable adopted with the required majorities, the measure is reasonable and related to safety, and it complies with the declaration of co-ownership and the Civil Code of Quebec. The wording must specify the procedures, deadlines and exceptions.
• Who pays for the purchase and installation?
  Often, the co-owner pays for sensors located in their unit, while the syndicate covers the common portions. Your by-laws and annual general meeting resolution must clarify the allocation of costs and proof of compliance.
• Can someone enter my condo to check the installation?
  The syndicate may provide for inspections with notice and legitimate reasons related to the preservation of the building. First encourage self-reporting (invoices and photos), then use visits only when necessary and during announced time slots.

This article provides general information and does not constitute legal advice. Consult a lawyer or notary regarding your situation.

Do you manage a divided co-ownership in Quebec? Discover our plans or contact us to assess your needs.

Would you like to explore other practical topics for your board of directors? Visit the multiRent blog and our Services – Operations Management pages for practical day-to-day support.