What insurance do I need for a Calgary basement suite?

You need to notify your home insurance provider and upgrade to a landlord or rental dwelling endorsement on your homeowner's policy before renting a Calgary basement suite. Failing to disclose a rental suite to your insurer can void your entire policy — including coverage for the main home — leaving you completely exposed in the event of fire, flood, or liability claims.

The first step is calling your existing home insurance company and informing them that you have (or are building) a secondary suite. Most major Alberta insurers — Intact, Aviva, Wawanesa, Co-operators, and TD Insurance — offer rental suite endorsements that add the suite to your existing policy. The premium increase is typically $300–$800 per year depending on the insurer, the suite's size, and your coverage limits. Some insurers may require confirmation that the suite is fully permitted and meets Alberta Building Code requirements before providing coverage — another reason permits are non-negotiable.

Your upgraded policy should cover property damage to the suite (fire, water, vandalism), liability protection in case a tenant or their guest is injured on the property, and loss of rental income if the suite becomes uninhabitable due to a covered event. Pay attention to your liability coverage limit — most insurance advisors recommend a minimum of $2 million in personal liability when you become a landlord. An umbrella policy providing additional liability coverage beyond your home policy costs roughly $200–$400 per year and is worth considering.

Tenant insurance is equally important and something you should require as a condition of the lease. Tenant insurance (also called renter's insurance) covers the tenant's personal belongings and provides liability protection from the tenant's side. It typically costs tenants $20–$40 per month and protects both parties. If a tenant causes a kitchen fire that damages the suite, their liability coverage responds first. Without tenant insurance, your homeowner's policy bears the full burden, potentially increasing your premiums for years.

There are a few specific risks Calgary suite owners should discuss with their insurer. Sewer backup coverage is critical — Calgary's spring snowmelt season and summer storms can overwhelm the storm sewer system, and basement suites are the first to flood. Ensure your sewer backup coverage limit is sufficient to cover the suite's finishes and contents — $50,000–$100,000 in sewer backup coverage is reasonable for a finished suite. Overland water coverage is a newer product that covers surface water flooding and is worth adding if available from your insurer.

An unpermitted suite creates a serious insurance gap. If damage occurs and the insurer discovers the suite was built without permits, they may deny the claim entirely. The cost of proper permits — typically $2,000–$3,500 for a Calgary basement suite — is insignificant compared to a denied insurance claim on a $40,000–$80,000 suite build. Browse the Calgary Construction Network directory for contractors who handle the full permit process as part of their suite construction service.