Commercial Builder's Risk Insurance Calculator

About the Commercial Builder's Risk Insurance Calculator

Builder's risk insurance (also called course of construction insurance) covers buildings and structures during construction or renovation against fire, weather, theft, vandalism, and other perils. This temporary policy protects the owner, general contractor, and subcontractors' interests in the project.

This calculator estimates builder's risk premiums based on the total completed project value, construction type, project duration, and optional coverages like soft costs and flood/earthquake. Rates typically range from 1-4% of total project value depending on risk factors.

This is an educational estimate only. Builder's risk premiums vary by location, specific project details, and carrier. Projects in hurricane zones, flood plains, or earthquake-prone areas pay significantly more. Consult a construction insurance specialist for binding quotes.

When This Page Helps

During construction, a partially completed building is vulnerable to storms, fire, theft, and vandalism. Standard property insurance doesn't cover buildings under construction. Builder's risk protects millions of dollars in materials, labor, and equipment already invested in the project.

How to Use the Inputs

1. Enter the total completed project value (hard costs).
2. Select the construction type.
3. Enter the project duration in months.
4. Select whether to include soft costs coverage.
5. Indicate if the project is in a high-risk zone.
6. Review the estimated premium.

Example Calculation

Tips & Best Practices

• Builder's risk should cover the full completed value including materials on-site and in transit.
• Name all parties as additional insureds — owner, GC, and key subcontractors.
• Soft costs coverage protects against additional interest, permit fees, and professional fees from delays.
• Theft and vandalism are covered but require reasonable security measures at the job site.
• Install temporary fire protection and CCTV to reduce risk (and sometimes premium).
• This is an educational estimate — consult a construction insurance specialist for project-specific quotes.

Why Builder's Risk Is Essential

Construction projects combine high-value materials, temporary structures, and incomplete protective systems (no sprinklers yet, no security systems). This makes construction sites particularly vulnerable to fire, weather, and theft. A single event can set a project back months and cost millions.

Rate Factors for Builder's Risk

Construction type is the primary rate factor — frame construction is riskiest, while fire-resistive steel and concrete have the lowest rates. Location matters too: coastal areas, flood zones, and earthquake zones carry surcharges. Project duration affects premium since longer projects have more exposure time.

Managing Builder's Risk Costs

Protect construction sites with perimeter fencing, security cameras, and on-site security for high-value projects. Install temporary fire protection as early as feasible. Accurate project timelines prevent paying for coverage longer than necessary.

Frequently Asked Questions

• What does builder's risk insurance cover?

  Builder's risk covers the structure under construction, building materials on-site and in transit, temporary structures, and installed equipment against fire, wind, hail, theft, vandalism, and other named perils. Some policies offer all-risk (open peril) coverage.

• Who should buy builder's risk?

  Either the property owner or general contractor can purchase builder's risk. The owner typically purchases it on larger projects, while the GC may provide it on smaller projects. The policy should name all parties with an insurable interest.

• Does it cover flood and earthquake?

  Standard builder's risk excludes flood and earthquake. These can be added as endorsements at additional cost, and they're essential in exposed areas. Flood endorsements can add 30-100% to the premium in high-risk zones.

• What are soft costs?

  Soft costs are additional expenses incurred when construction is delayed by a covered loss: loan interest, permit extensions, architect fees for redesign, marketing costs, and additional rental income lost. This endorsement typically adds 15-20% to the premium.

• Does builder's risk cover renovations?

  Yes. Builder's risk is available for new construction, renovations, and additions. For renovation projects, make sure the existing structure is covered under a separate property policy, as builder's risk typically only covers the new work.

• When does builder's risk coverage end?

  Coverage ends when the building is completed and occupied, when the owner accepts the project, or when the policy term expires — whichever comes first. Ensure a seamless transition to a permanent property policy.