The Concrete Council of Canada commissioned Globe Advisors to conduct a study which was called "Insurance Costs for Mid-Rise Wood Frame and Concrete Residential Buildings." Analyzing data from multiple sources and interviews with the Canadian Wood Council found that builder risk insurance rates per $100 monthly for comparable wood and concrete buildings are on average $0.008 for concrete and $0.053 for wood.
The rates went down further without the rates from the Canadian Wood Council to a 0.06 average for wood buildings. One of the key factors cited for wood being more expensive is the higher risk of water damage:
Wood-frame mid-rise buildings are much more susceptible to mold and rot than concrete structures. Water damage is already the leading cause of residential claims costs in Canada.