Cellular Antenna and Quebec Co-ownership: A Board Guide

Installing a cellular antenna on the roof of a divided co-ownership raises legal, technical and financial questions. Telecommunications operators often offer lucrative leases, but the board of directors must assess the full impact on co-owners. This article summarizes the essential considerations for making a sound decision and documenting each step.

Updated as of 2026-05-29.

Installing a cellular antenna: issues for the syndicate

The roof is generally a common portion. An antenna can improve cellular coverage in the area and generate recurring income for the syndicate. On the other hand, it adds a structural load, requires regular access and involves ongoing compliance monitoring.

• Potential benefits:
  • Rental income to support the common expenses budget and contingency fund.
  • Improved mobile coverage in the building and surrounding neighbourhood.
  • Opportunity to negotiate related work (e.g., localized resurfacing of the membrane).
• Risks and constraints:
  • Leaks if penetrations and seals are poorly designed or maintained.
  • Visual impact and potential co-owner sensitivity to radiofrequency (RF) waves.
  • Additional contractor access to common portions, health and safety coordination, and fire safety requirements.

Before moving forward, review the declaration of co-ownership and the by-laws of the immovable. Many declarations of co-ownership regulate the use of the roof, the types of equipment permitted and the approval thresholds required. The board of directors should also anticipate the co-owners’ views, particularly if the destination of the immovable (residential or mixed-use) is raised at the annual general meeting.

Legal framework and required votes in divided co-ownership

The roof, like most structural and building-envelope elements, is a common portion within the meaning of the Civil Code of Quebec (C.C.Q.; see common portions). The decision to install an antenna there and lease part of the roof to an operator goes beyond routine maintenance and requires authorization from the meeting of co-owners.

• Nature of the act to be authorized:
  • Signing a lease or occupancy agreement granting a third party a right of use over a common portion.
  • Possible creation of a real right (e.g., a servitude of use) or a long-term commitment enforceable against future purchasers.

Depending on the scope of the right granted, a special resolution may be required. Decisions involving the creation of real rights over a common portion or a form of disposal of its use require a higher approval threshold (see section 1097 C.C.Q.). A change in the destination of the immovable, if at issue, requires unanimity (see section 1098 C.C.Q.). The board of directors should obtain a legal opinion to confirm the type of resolution required and record the decision in the minutes.

Procedural best practices:

1. Analysis by the board of directors (need, scenarios and risks), and engagement of a professional to conduct a legal review of the project and proposed lease.
2. Calling a meeting (annual general meeting or special meeting) with a clear agenda and explanatory documents.
3. Voting at the proper threshold; providing detailed minutes and, where applicable, publishing the act in the land register to ensure it is enforceable against third parties.

To support your administrative process and access meeting notice/minutes templates, see our administrative management services: https://www.multirent.ca/services/#gestion-administrative

Useful references:

• Civil Code of Quebec (co-ownership and decisions of the meeting): https://www.legisquebec.gouv.qc.ca/fr/document/cs/CCQ-1991

Negotiating and managing the antenna lease

Operators often propose a multi-year lease with automatic renewals. A line-by-line review protects the syndicate and clarifies responsibilities. Economic value is not enough; transferability, civil liability and relocation are equally important.

Clauses to review and negotiate

• Description of the premises and sealed plan: exact area, rights-of-way, access routes, anchor points and penetrations.
• Term and renewals: limit automatic renewals and provide for a review of the terms.
• Relocation and end of lease: the syndicate’s right to move the installation in the event of major work; schedule and costs to be borne by the operator.
• Access and protocols: intervention hours, escorts, advance notice, and recording in the work log.
• Insurance and indemnification: minimum limits, waivers of subrogation, and liability for damage to common portions and private portions.
• RF compliance: compliance with public exposure standards, signage and exclusion-zone marking.
• Maintenance and repairs: who pays for what; approved methods to preserve the membrane warranty.
• Indexation and fees: clear adjustment mechanisms; late-payment penalties.

Administrative monitoring and reporting

• Maintain a schedule of renewals and notices.
• Archive insurance certificates, permits, engineering reports and technical interventions.
• Record the related income and expenses under a dedicated heading in the financial statements; present the information at the annual general meeting.

For structured support with negotiations and monitoring, see our operations management services: https://www.multirent.ca/services/#gestion-des-operations

Safety, maintenance and technical compliance

A rooftop antenna requires increased vigilance regarding health and safety and preventive maintenance. Before signing, require validation by an engineer (loads, anchor points, vibrations and possible interference). The BTU output of related equipment (radio cabinets and power supply) and heat dissipation must also be considered.

Essential technical considerations:

• Structure and membrane: engineering calculations, mechanical protection, pads and supports approved by the roofing manufacturer; compatible seals.
• Drainage and snow: keep drainage paths clear; avoid obstacles that create ice dams.
• Access safety: guardrails, lifelines and certified anchor points; work-at-height plan and contractor access permits.
• Fire and electrical safety: firestopping at penetrations, disconnect devices and secured cable routes.
• RF zones: signage, markers and procedures to limit exposure; record disconnections during work near the antenna.

External resources:

• RBQ – Work at heights and fall protection: https://www.rbq.gouv.qc.ca/securite-sur-les-chantiers/travail-en-hauteur/protection-contre-les-chutes.html

Document updates:

• Maintenance logbook / EUC: add technical data sheets, as-built plans, inspection dates and maintenance dates.
• Work log: retain all work orders and intervention reports.
• Contractor licence: require contractors to hold the appropriate subcategory licence and comply with RBQ rules.

For technical coordination and maintenance, see our services: https://www.multirent.ca/services/#gestion-des-operations

Income, taxation and accountability

An antenna lease generates income that must be budgeted transparently. The board of directors may allocate part of it to the contingency fund or operating fund, depending on the needs and the declaration of co-ownership. Present the details at the annual general meeting and record the decisions in the minutes.

• Accounting: create separate “Antenna income” and “Antenna maintenance” items to make the financial statements easier to understand.
• Forecasts: include the fees in the budget, but remain cautious if termination clauses exist.
• Allocation: prioritize the long-term viability of the roof; establish a specific reserve for relocation during major rehabilitation work.

Taxes:

• Depending on the circumstances, rental income may create tax or QST/GST obligations. Check whether registration for tax accounts is required and the impact on the syndicate’s tax status.
• Consult Revenu Quebec for the rules on tax registration: https://www.revenuquebec.ca/fr/entreprises/taxes/tvq-tps/inscription/

Best practices and industry reference:

• RGCQ – Co-ownership resources and best practices: https://rgcq.org/
• Civil Code of Quebec (decisions requiring a higher majority: see section 1097; change in destination: see section 1098): https://www.legisquebec.gouv.qc.ca/fr/document/cs/CCQ-1991

To structure your financial and budget reporting, see our financial management services: https://www.multirent.ca/services/#gestion-financiere

For more practical content, visit our blog: https://www.multirent.ca/blogue/

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

This article provides general information and does not replace advice from a tax specialist or accountant. Refer to Revenu Quebec and the CRA for the exact requirements.

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