A single fire can destroy $2 million in framing, materials, and labor in under an hour. Without builders risk insurance, that loss comes out of your pocket. Every general contractor managing ground-up construction or major renovations needs this coverage. Yet 23% of construction claims involve disputes over what builders risk actually covers.

This guide breaks down everything you need to know about builders risk insurance for contractors. You will learn what it protects, what it excludes, how much it costs, who buys it, and how to verify coverage on every subcontractor certificate of insurance that crosses your desk.

What Builders Risk Insurance Covers

Builders risk insurance (also called course of construction insurance) protects the physical structure under construction and the materials going into it. The policy covers direct physical loss from named perils or, on better forms, all risks subject to exclusions.

Covered property typically includes:

The building or structure under construction
Building materials and supplies on site
Building materials in transit (up to a sublimit, often $25,000-$100,000)
Temporary structures like scaffolding and formwork
Foundations below the lowest basement floor (when specified)
Fixtures and equipment that will become part of the building

Common covered perils:

Fire and lightning
Wind and hail (subject to separate deductibles in coastal zones)
Explosion
Vandalism and malicious mischief
Theft of building materials
Weight of ice and snow
Water damage from burst pipes

The key distinction: builders risk covers the project itself. It does not cover your workers, your general liability exposure, or your owned equipment. Those need separate policies.

What Builders Risk Insurance Excludes

Knowing what the policy will not pay for saves you from expensive surprises. Standard builders risk exclusions include:

Exclusion	Why It Matters	Solution
Employee injuries	Workers comp is a separate requirement	Require workers comp COIs from all subs
Existing structures	Renovation projects need installation floater	Add an existing structure endorsement
Earthquake	Standard forms exclude seismic events	Purchase earthquake endorsement (adds 0.5-2% to premium)
Flood	NFIP or private flood required separately	Standalone flood policy for projects in zones A or V
Faulty workmanship	The defective work itself is never covered	Resulting damage may be covered depending on policy form
Mechanical breakdown	Equipment failures from internal causes	Equipment breakdown endorsement
War and nuclear hazard	Industry-standard exclusions	No available coverage
Normal settling and shrinkage	Expected construction conditions	No available coverage
Voluntary parting	Giving property away by choice or fraud	Crime/fidelity coverage

Pay special attention to the faulty workmanship exclusion. The policy will not pay to redo bad work. But if a plumber installs a pipe incorrectly and it bursts, causing $50,000 in water damage to finished drywall, that resulting damage may be covered. The distinction between defective work and resulting damage drives roughly 30% of builders risk claim disputes.

Builders Risk Insurance Policy Types

Two main policy structures exist. Understanding the difference affects your coverage and your premium.

Completed Value Form

You insure the full completed value of the project from day one. The premium is calculated on the total finished value. This is the most common form for projects under $10 million.

Example: A $5 million apartment project at a rate of 0.25% costs $12,500 in annual premium. You have full coverage from the first day, even though only $200,000 in materials sit on the site.

Reporting Form

You report the value at risk monthly or quarterly. The premium adjusts based on actual values on site. This form works well for large projects over $10 million where paying for full coverage on day one creates unnecessary cost.

Example: That same $5 million project might cost $8,000-$9,000 under a reporting form because you only pay for the value actually at risk each reporting period.

Feature	Completed Value	Reporting Form
Premium timing	Full premium upfront	Deposit premium, adjusted monthly/quarterly
Best for	Projects under $10M	Projects over $10M
Administrative burden	Low	High (requires monthly value reports)
Coinsurance risk	None	Penalty for under-reporting values
Typical rate range	0.15%-0.40% of project value	0.10%-0.35% of project value

Project-Specific vs. Master/Annual Policies

A project-specific policy covers one job. A master builders risk policy covers all your projects within a policy period. If you run 5 or more projects simultaneously, a master policy saves 15-30% compared to buying individual policies.

Who Purchases Builders Risk Insurance

The contract dictates who buys the policy. Three common arrangements exist:

Owner-purchased: The project owner buys the policy and names the GC and all subcontractors as insureds. This is the most common arrangement on commercial projects. AIA A101 and ConsensusDocs 200 both default to owner-purchased builders risk.

Contractor-purchased: The GC buys the policy. Common on residential and smaller commercial projects. The GC typically adds the cost to the bid or charges the owner directly.

Subcontractor-purchased (rare): Individual subs carry their own coverage. This creates dangerous gaps because each sub only covers their own work, leaving no single policy protecting the entire project.

The best practice: one policy covering the entire project with all parties named as insureds. This eliminates finger-pointing after a loss and prevents subrogation among project participants.

How Much Does Builders Risk Insurance Cost

Premiums typically run 1-4% of total project value, but most standard commercial and residential projects fall in the 0.15-0.50% range. Several factors push the rate up or down.

Factor	Low Rate Impact	High Rate Impact
Construction type	Concrete/steel (fire-resistive)	Wood frame
Location	Inland, low crime	Coastal, high crime
Project duration	Under 12 months	Over 24 months
Deductible chosen	$25,000+	$2,500
Fire protection	Hydrant within 1,000 feet	Rural, no hydrant
Occupancy during construction	None	Partial occupancy
Prior loss history	Clean 5-year history	Multiple claims

Real-world example: A $3 million wood-frame residential project in Texas with a $5,000 deductible and 14-month duration typically costs $6,000-$12,000 for builders risk coverage.

Coverage Triggers and Policy Duration

A builders risk policy begins on the date specified in the declarations. It ends at the earliest of:

The policy expiration date
When the owner accepts the project
When the building is occupied (unless an occupancy endorsement exists)
When the owner's permanent property insurance takes effect
A specified number of days after substantial completion (often 30-90 days)

Watch out for gaps. If your project runs past the policy expiration, you need an extension. Most carriers will extend for 30-90 days at pro-rata premium. Letting coverage lapse during the final punch-list phase is a common and preventable mistake.

Projects that include phased occupancy need a partial occupancy endorsement. Without it, the carrier can deny a claim on a floor that tenants already occupy, even if construction continues on other floors.

How to Verify Builders Risk on Subcontractor Certificates

When an owner provides builders risk covering the entire project, your subcontractors benefit from that coverage. But you still need to verify:

Named insured status. Confirm your company appears as a named insured or additional insured on the policy. Request a copy of the declarations page, not just the certificate.
Coverage limits match project value. The policy limit should equal or exceed the completed value of the project. Anything less triggers a coinsurance penalty at claim time.
Endorsements in place. Check for theft, transit, and testing endorsements relevant to your scope.
Waiver of subrogation included. This prevents the builders risk carrier from suing you or your subs to recover claim payments. Standard AIA contracts require this waiver.
Expiration date covers the full project timeline. Add a 90-day buffer beyond planned completion.

When your subcontractors carry their own builders risk on specific scopes, require certificates showing:

Policy number and carrier name (verify A.M. Best rating of B+ or higher)
Coverage dates spanning their work period
Limits adequate for their scope of work
Your company listed as loss payee or additional insured

Tracking these details across dozens of subcontractors on multiple projects gets complicated fast. SubcontractorAudit's COI tracking automates verification and flags coverage gaps before they become claim disputes.

Builders Risk Claims: What to Expect

The claims process follows a predictable path:

Step 1: Immediate notification. Report losses within 24-72 hours. Delayed reporting is the number one reason carriers reduce or deny builders risk claims.

Step 2: Protect the property. Take reasonable steps to prevent further damage. Board up openings, tarp exposed areas, pump standing water. These mitigation costs are typically covered.

Step 3: Document everything. Photograph damage before cleanup. Save damaged materials for the adjuster to inspect. Pull progress photos showing pre-loss conditions.

Step 4: Adjuster inspection. The carrier sends an adjuster within 3-10 business days depending on loss severity. Large losses (over $250,000) often involve a forensic engineering team.

Step 5: Proof of loss. Submit a sworn statement with supporting documentation within 60-90 days (check your policy for the exact deadline).

Step 6: Settlement. Average builders risk claim resolution takes 45-120 days. Disputes over scope or valuation can extend this to 6-12 months.

Average claim amounts by peril (industry data):

Peril	Average Claim Amount	Frequency (% of all claims)
Fire	$425,000	28%
Wind/Hail	$185,000	22%
Water damage	$142,000	19%
Theft	$67,000	15%
Collapse	$310,000	6%
Vandalism	$38,000	10%

Builders Risk and Your Other Construction Policies

Builders risk does not operate in isolation. Understanding how it fits with your other coverage prevents duplicate payments and coverage gaps.

Commercial General Liability (CGL): Your CGL covers bodily injury and property damage to third parties. Builders risk covers damage to the project itself. If a crane drops a beam that damages the building and injures a pedestrian, builders risk pays for the building damage while CGL handles the pedestrian's injury claim.

Inland Marine/Installation Floater: Covers your tools, equipment, and materials not yet incorporated into the structure. Some builders risk policies include limited transit coverage, but a separate installation floater provides broader protection.

Workers Compensation: Covers employee injuries regardless of fault. Builders risk has nothing to do with worker injuries. Never let anyone tell you that builders risk replaces the need for workers comp certificates from your subcontractors.

FAQs

Do I need builders risk insurance if the owner already has a policy? If the owner purchased a project-wide builders risk policy that names you as an insured, you do not need a separate policy. However, verify that the policy limits, endorsements, and duration match the project requirements. Get a copy of the declarations page and confirm the waiver of subrogation is in place.

What is the difference between builders risk and a standard property policy? Standard property insurance covers completed, occupied buildings. Builders risk covers buildings under construction. Property policies exclude structures under construction because the risk profile differs. The construction site has open exposures, stored materials, multiple trades working simultaneously, and no fire suppression systems until near completion.

Can I get builders risk insurance for a renovation project? Yes, but renovation projects require special attention. You need an existing structures endorsement to cover the portions of the building not under renovation. Standard builders risk only covers the new work. The existing structure endorsement typically adds 10-20% to the premium.

What happens if my project runs past the builders risk expiration date? You must request a policy extension before the expiration date. Most carriers grant extensions at pro-rata premium (meaning you pay proportionally for the additional time). If you let coverage lapse and a loss occurs during the gap, you have no coverage. Set calendar reminders 60 days before expiration.

Are subcontractor tools and equipment covered under builders risk? No. Builders risk covers materials and equipment that become part of the finished structure. A subcontractor's power tools, scaffolding, and temporary equipment are not covered. Subs need their own inland marine or contractor's equipment policy. If a sub's generator is stolen from the job site, builders risk will not pay that claim.

How do I determine the right coverage amount for my builders risk policy? The coverage amount should equal the completed value of the project, including materials, labor costs, and the contractor's overhead and profit. Do not use the contract price alone if it excludes owner-furnished materials. Include the value of existing structures if you add that endorsement. Underinsuring by even 20% can trigger a coinsurance penalty that reduces every claim payout proportionally.