Written by Justin Goodman, CIC, CRIS, CCIP, CEO and Co-Founder, Total CSR
Published: August 24, 2026 · Last reviewed: August 24, 2026
In plain language: Builders risk insurance protects a building while it’s being built. It covers the structure, materials on site, and sometimes equipment against fire, storms, theft, and vandalism until construction is finished and the owner takes over.
Technical definition: Builders risk insurance (also known as builders all risk in some markets) is a specialized property insurance policy covering buildings, structures, and materials in the course of construction, alteration, or repair. It typically insures against direct physical loss, terminates upon completion or occupancy, and is written on either a completed value or reporting form basis.
Builders Risk Insurance at a Glance
Builders risk insurance is written as a distinct policy from standard commercial property coverage because construction sites carry different, often higher, risk exposures.
| Attribute | Detail |
|---|---|
| Also known as | Course of construction insurance, builder’s risk policy, builders all risk |
| Category | Commercial property / inland marine policy |
| Lines of business | Builders Risk, Commercial Property, Inland Marine |
| Industries most affected | Construction, real estate development, habitational and commercial builders |
| Related forms or endorsements | ISO CP 00 20 (Builders Risk Coverage Form), CP 10 30 (Causes of Loss – Special Form) |
| Who bears the risk | Property owner, general contractor, or lender, depending on contract terms |
| Common solution | Project-specific builders risk policy sized to total completed value |
| Also interacts with | Commercial general liability, commercial auto insurance, installation floaters, delay in completion coverage |
Key Takeaways
- Builders risk insurance covers a structure, materials, and sometimes equipment while a project is under construction, from the start of work until completion or occupancy.
- Agencies must confirm who is named as an insured, since owners, general contractors, and subcontractors often have separate financial stakes in the same project.
- The most common pitfall is letting coverage lapse or terminate automatically at the wrong milestone, such as substantial completion, leaving a gap before the permanent property insurance policy incepts.
- A quick win for agencies is confirming the policy’s coverage territory and off-site storage limits before materials are ordered, not after a theft claim is filed.
What Is Builders Risk Insurance in Insurance?
Builders risk insurance is a property insurance policy designed specifically for buildings, structures, and materials while they are under construction, renovation, or repair. Standard commercial property policies assume a finished, occupied structure with predictable exposures. A construction site is a moving target: framing lumber sits exposed to weather, materials are staged in unsecured areas, and the building itself changes form daily. Builders risk exists to bridge that gap between an empty lot and a completed, insurable property.
Both commercial builders risk and residential builders risk policies typically operate on a completed value basis, meaning the policy limit reflects the total anticipated value of the finished project even though the insured amount at risk grows as construction progresses. Some policies instead use a reporting form, where the insured periodically reports values in place and pays premium based on actual construction progress. Coverage can be written on either a replacement cost valuation or actual cash value basis, with replacement cost valuation being more common for new construction projects. Either way, the policy responds to direct physical loss from causes like fire, wind, hail, theft, and vandalism, subject to exclusions such as faulty workmanship or design defects.
Consider a developer building a 40-unit apartment complex. During framing, a wind-driven fire destroys two buildings before the roof is dried in. A standard commercial property policy would not respond, because the buildings were never completed or occupied and no policy was ever bound on them as finished structures. The builders risk policy responds instead, covering the framing lumber, in-place electrical rough-in, and staged materials destroyed in the fire, up to the reported or completed value limit.
Major carriers like Zurich builders risk and Chubb builders risk programs offer specialized coverage options including modular building coverage, engineering expenses, and expedited service expenses for projects requiring rapid reconstruction. When selecting a carrier, agencies should review financial strength ratings and customer satisfaction scores to ensure the insurer can handle complex construction claims efficiently.
How Does Builders Risk Insurance Work?
- The binding. The general contractor, developer, or property owner secures a builders risk policy before construction begins, scoped to the anticipated total completed value of the project with policy extensions available for specific exposures.
- The construction period. Coverage stays in force as work progresses, following the structure, installed materials, and often materials in transit or in temporary storage, subject to sublimits.
- The loss event. A covered peril, such as fire, windstorm, or theft, damages the structure or materials while the project remains under construction.
- The claim. The named insured reports the loss, and the adjuster evaluates the physical damage against the policy’s completed value or reported value at the time of loss.
- The termination. Coverage ends automatically at a policy-defined trigger, typically substantial completion, occupancy, or acceptance by the owner, at which point the permanent commercial property policy must already be in force.
Real Claim Examples Involving Builders Risk Insurance
Fire Damage to a Mid-Construction Apartment Building
A developer building a 60-unit apartment complex lost the top two floors of one building to an electrical fire started by a temporary power panel. The commercial builders risk policy covered the framing, drywall, and installed plumbing fixtures destroyed in the fire, along with debris removal costs. Because the policy was written on a completed value basis with replacement cost valuation, there was no coinsurance penalty despite the building being only 70 percent finished at the time of loss.
Stolen Copper Wiring and HVAC Units
A commercial contractor building a strip mall discovered that copper wiring and two rooftop HVAC units had been stolen from the unsecured site over a weekend. The builders risk policy responded to the theft, but the adjuster reduced the payout because the policy carried a sublimit for theft of materials not yet permanently installed. The agency later added an endorsement raising that sublimit on future projects for the same client.
Coverage Gap at Substantial Completion
A general contractor assumed the builders risk policy would stay active through final punch-list work, but the policy terminated automatically at substantial completion as defined in the form. A hailstorm damaged the roof during the punch-list period, after the builders risk policy had already lapsed and before the owner’s permanent property insurance policy had incepted. Neither policy responded, and the loss became a dispute over which party’s insurance program should have covered the gap.
Builders Risk Insurance vs. Commercial Property Insurance: What Is the Difference?
Builders risk insurance and commercial property insurance both protect physical structures, but they are built for different phases of a building’s life. Builders risk covers a structure while it is incomplete and changing; commercial property insurance covers a finished, occupied building with stable, predictable exposures.
| Comparison area | Builders Risk Insurance | Commercial Property Insurance |
|---|---|---|
| Primary use case | Structures under construction, renovation, or repair | Completed, occupied buildings and business personal property |
| Coverage / concept type | Project-specific property form, often completed value basis | Ongoing annual property policy, scheduled or blanket limits |
| Typical exclusions | Faulty workmanship, design error, wear and tear, delay costs | Wear and tear, flood and earthquake unless added, intentional acts |
| Who is most affected by errors | Developers, general contractors, and lenders financing the project | Building owners and tenants relying on continuous coverage |
| Common mistakes | Letting coverage lapse before permanent policy incepts | Underinsuring after renovations increase replacement cost |
What Are the Most Common Mistakes With Builders Risk Insurance?
- Agents bind builders risk coverage without confirming the completion trigger date, leaving the insured exposed once the project reaches substantial completion but before the permanent property policy is bound.
- Policies are written with inadequate off-site storage or transit sublimits, so stolen or damaged materials staged away from the job site are underpaid or denied entirely.
- Named insured schedules omit subcontractors or lenders who have a financial interest in the project, creating disputes over who is entitled to claim proceeds after a loss.
- Soft costs such as additional interest, taxes, engineering expenses, expedited service expenses, and lost rental income are assumed to be automatically covered when they require a separate endorsement or sublimit.
- Coverage is bound at the original contract value and never adjusted when change orders increase the project’s total completed value, creating a coinsurance penalty at claim time even when cost escalation protection policy extensions available were not added.
- Renovation projects on occupied buildings are insured under a standard builders risk form that assumes an unoccupied site, leaving a coverage mismatch for the occupied portions.
How to Explain Builders Risk Insurance to a Client
Explaining Builders Risk Insurance to a personal lines client
Builders risk insurance is the coverage you need if you’re building a new home or doing a major renovation, since your homeowners insurance policy generally won’t cover a structure that isn’t finished yet. Think of it as protection for the lumber, materials, and partially built structure sitting on your lot. Residential builders risk policies typically provide replacement cost valuation rather than actual cash value, ensuring you can rebuild without depreciation deductions. Once the home is finished and you move in, this policy ends and your regular homeowners insurance policy takes over.
Explaining Builders Risk Insurance to a small business owner
Builders risk insurance protects the building you’re constructing or renovating, along with the materials on site, against fire, storms, theft, and vandalism while the work is happening. It’s separate from your regular business property insurance policy because a construction site has different risks than a finished building. We’ll make sure this coverage lines up with your construction schedule so there’s no gap when the project wraps up, and we can discuss policy extensions available for things like engineering expenses or cost escalation protection if your project timeline extends.
Explaining Builders Risk Insurance to a CFO or risk manager
Builders risk insurance is a project-specific property form that should be sized to the total completed value of the project, not just the current contract price, to avoid a coinsurance penalty as change orders add value. We need to align the policy’s termination trigger with your actual occupancy and turnover schedule, and confirm whether soft costs like extended interest, engineering expenses, expedited service expenses, and lost income need a separate endorsement. I’d also recommend we review the named insured schedule against your contract documents to make sure lenders and key subcontractors are properly reflected. When selecting carriers, we should evaluate financial strength ratings and customer satisfaction scores, with options like Zurich builders risk or Chubb builders risk offering robust programs for complex commercial projects.
Frequently Asked Questions About Builders Risk Insurance
Who typically buys builders risk insurance?
The party bearing financial risk for the project typically buys the policy, which is often the general contractor, the property owner, or the developer depending on contract terms. Lenders financing the construction frequently require proof of builders risk coverage before releasing funds. The named insured should reflect whoever has an insurable interest, including relevant subcontractors when the contract requires it.
When does builders risk coverage end?
Builders risk coverage ends at a policy-defined trigger, most commonly substantial completion, occupancy, or owner acceptance of the project. Agencies should confirm this trigger date matches the actual construction timeline, since a mismatch can create a gap before the permanent commercial property policy takes over. Extensions are usually available if construction runs longer than expected, but they must be requested before the original policy terminates.
Does builders risk insurance cover faulty workmanship?
Builders risk insurance generally excludes faulty workmanship, design error, and defective materials as the direct cause of loss. It does typically cover resulting physical damage, meaning if faulty wiring causes a fire that destroys framing, the fire damage is usually covered even though the wiring defect itself is not. Agencies should review the specific policy language, since exclusion wording varies by carrier.
Can builders risk insurance cover renovations to an occupied building?
Builders risk insurance can cover renovations, but a standard course of construction form is built around an unoccupied structure and may not properly address an occupied building undergoing partial renovation. Carriers often offer a renovation-specific or occupied-building endorsement for these situations. Agencies should flag occupied renovation projects early so the right form is selected instead of a standard new-construction builders risk policy.
What is completed value versus reporting form coverage?
Completed value coverage sets the policy limit at the anticipated total value of the finished project from day one, with premium calculated on that full amount regardless of current construction progress. Reporting form coverage instead requires the insured to periodically report the value of work in place, with premium adjusted to match. Completed value is simpler to administer, while reporting forms can reduce premium on longer projects with slow value accumulation. Both can include cost escalation protection and other policy extensions available to address changing project values.
Related Insurance Terms
- Course of Construction Insurance: An alternate name for builders risk insurance, referring to the same coverage for a structure while construction is actively underway.
- Inland Marine Insurance: A broader category of property coverage for movable or specialized property, under which many builders risk policies are technically filed and rated.
- Commercial Property Insurance: The standard property insurance policy that takes over once a builders risk policy terminates at substantial completion, insuring the finished, occupied structure going forward.
- Delay in Completion Coverage: An optional endorsement to a builders risk policy covering lost income or extended interest costs when a covered loss delays a project’s completion date.
- Soft Costs Coverage: An add-on to builders risk insurance covering non-construction financial losses like additional interest, taxes, engineering expenses, expedited service expenses, and design fees resulting from a delay caused by a covered loss.
- Installation Floater: A related inland marine form covering materials and equipment being installed, sometimes overlapping with builders risk on projects involving specialized machinery.
Sources and References
- IRMI. Builder’s Risk Insurance.
About the Author
Justin Goodman, CIC, CCIP, CISC, CLCS, CRIS, PCIA, QCLS, MFHR
CEO and Co-Founder, Total CSR, Inc.
Justin Goodman is a third-generation insurance broker with over two decades in agency operations. He has trained more than 50,000 CSRs, account managers, and producers in commercial and personal lines coverage, from workers’ compensation to construction risk. He was named 2024 Insurance Journal Agent of the Year and one of the nation’s top five construction insurance experts by Risk & Insurance. He is the author of Retain, which applies cognitive science research on memory and knowledge transfer to insurance training, and speaks nationally on how agencies build durable technical expertise in their teams.