Your Insurance Changes When You Renovate
Most Calgary homeowners don’t know that a major renovation can void your existing home insurance if you don’t notify your insurer. Here’s what you need to know.
Tell Your Insurer Before You Start
Any renovation that:
- Costs over $10,000-$25,000 (varies by insurer)
- Involves structural work
- Involves electrical, plumbing, or gas changes
- Leaves your home partially vacant during construction
…requires notification to your insurer. Failure to notify and then making a claim = potential claim denial.
What Your Home Insurance May NOT Cover During Reno
- Damage caused by the contractor (their insurance covers this)
- Materials stored on-site before installation
- Water damage from plumbing work in progress
- Theft of materials from an unsecured site
- Fire from electrical work
What the Contractor Must Carry
- Commercial General Liability (CGL): Minimum $2M, covers damage caused by the contractor on your property
- WCB Coverage: Covers workers injured on your property (without this, YOU could be liable)
- Tools and Equipment Insurance: Their problem, not yours
Always get certificates of insurance dated within 30 days, directly from the insurer — not photocopied documents.
Course of Construction (COC) Insurance
For major renovations, ask about a Course of Construction (also called Builder’s Risk) policy. Covers the building and materials during the construction period. Some home insurance policies add this as an endorsement; others require a separate policy.
- Cost: Typically 1-2% of construction value per year
- Example: $150,000 renovation = ~$1,500-$3,000/year for COC
Vacancy Clauses: The Sneaky One
If you move out during renovation, your home is considered “vacant.” Most Calgary home insurance policies suspend coverage after 30 days of vacancy. Ask your broker about a vacancy endorsement or a specific policy for unoccupied homes under renovation.
After the Renovation: Update Your Coverage
- Notify your insurer when renovation is complete
- Update your home’s insured replacement value (it just went up)
- Document completed work with photos
- Add any high-value additions to your coverage (wine cellar, luxury kitchen, etc.)
The Short Version
- Call your insurer before renovation starts
- Ask about COC coverage for big projects
- Get proof of contractor’s liability and WCB
- Update coverage when you’re done
Related Articles
Pillar Guide: Home Renovations Calgary: The Complete Guide
Also read: How to Choose a Renovation Contractor Calgary | Calgary Renovation Costs Master Guide 2026
Contact Olympic City Renovations for a free consultation.
Olympic City Renovations serves Calgary, Priddis, Okotoks, and surrounding communities.

