Construction & Contractor Insurance in Ontario: What's Actually Covered

Why Contractor Insurance Is Different

Construction and contracting present a uniquely layered risk profile. You're working on someone else's property, often alongside other trades, with tools and equipment that travel between job sites. Your work becomes part of the structure — and if it fails, the liability can extend for years. A standard business owner's policy isn't built for this. Contractors need a purpose-built program.

Durham Region's construction industry spans everything from residential renovation trades to large ICI (industrial, commercial, institutional) general contractors. The insurance requirements differ substantially across that spectrum, but the core components of a sound contractor insurance program apply across the board.

Commercial General Liability (CGL)

CGL is the foundation of any contractor's insurance program. It covers your legal liability for bodily injury and property damage to third parties — the homeowner whose property you damaged, the bystander injured by debris on a job site, the neighbour whose fence was hit by your equipment.

For contractors in Ontario, a minimum CGL limit of $2 million is standard, but many general contractors and project owners now require $5 million per occurrence. If you're bidding on municipal or provincial work, higher limits are often specified in tender documents.

Key CGL considerations for contractors:

• Products and completed operations — covers liability arising from your work after it's done. Critical for trades whose work could cause damage months or years after completion.
• Cross-liability clause — protects against claims between named insureds (e.g., a general contractor and their subtrades on the same policy).
• Non-owned automobile — covers liability when employees use their own vehicles for work purposes.

Builder's Risk Insurance

Builder's risk (also called course of construction insurance) covers the structure under construction against physical loss or damage — fire, theft, vandalism, wind, and other perils. It protects the project value, not just your tools.

Who buys it matters: on a large project, the general contractor or project owner typically arranges builder's risk. On smaller residential renovations, the homeowner's existing policy may or may not provide adequate coverage for the project. Clarifying this before work begins is essential — a coverage gap discovered after a fire mid-renovation leads to disputes about who bears the loss.

Builder's risk is typically project-specific and purchased for the duration of construction. A blanket annual policy is available for high-volume contractors with multiple projects running simultaneously.

Tools, Equipment, and Contractor's Equipment

Your commercial property policy, if you have one, likely covers equipment stored at a fixed location. It doesn't follow your tools to the job site. Contractor's equipment coverage (also called inland marine or floater coverage) covers owned equipment against loss or damage anywhere it travels.

For trades with significant equipment — excavators, lifts, compactors, specialty tools — the value of your equipment inventory can easily exceed $500,000. Replacing it out of pocket while keeping your crews working is not realistic for most small and mid-sized operations.

Rented equipment deserves specific attention. If you rent and something happens, your rental agreement likely holds you liable for damage. Covering rented equipment on your policy — or purchasing the rental company's damage waiver — is worth evaluating based on how frequently you rent.

Wrap-Up Liability Programs

On large construction projects, a wrap-up liability program — also called an Owner Controlled Insurance Program (OCIP) or Contractor Controlled Insurance Program (CCIP) — covers all parties to a project under a single policy. Instead of every trade verifying insurance certificates from every subcontractor, the project is insured as a whole.

Wrap-up programs are common on large municipal, commercial, and industrial projects in Ontario. If you're a general contractor or project owner managing significant subcontractor relationships, understanding how these programs work — and when they make financial sense — is worth a dedicated conversation with your broker.

What Most Contractors Get Wrong

The most common coverage gaps we see in contractor insurance programs in Durham Region:

• Relying on subcontractors' certificates without verifying the policy terms and limits actually match the project requirements
• Assuming a home-based business rider on a personal home policy covers business tools and equipment
• Underinsuring completed operations coverage on the CGL policy — the risk doesn't end when you leave the job site
• Not notifying the insurer when revenue or the scope of work changes significantly during the policy year

If you haven't reviewed your contractor insurance program with a specialist in the past 12 months, the coverage that protected you three years ago may not reflect what you're actually building today.