# What Drives Builders Risk Insurance Cost and Deductibles

URL: https://mycontractorsinsurancequote.com/builders-risk-insurance/cost
Updated: 2026-10-29 · Reviewed by the Principal, Gleason Insurance Brokers, LLC
Publisher: My Contractors Insurance Quote, a website of Gleason Insurance Brokers, LLC

Builders risk premium is typically a rate applied to the insured value for the length of the build, so the value basis, construction type, fire protection, catastrophe exposure and term usually move the price most. Carriers commonly set one deductible for most losses, then separate water, theft and catastrophe deductibles that can be much larger on wood frame and in mapped hazard areas. Every figure varies by carrier guidelines, programs, project and individual risk, subject to terms.

## Key Decision Points
- Premium usually follows the insured value and the term, so an accurate completed value and a realistic schedule matter more than shopping the rate.
- Wood frame, thin fire protection and open, unsecured sites typically raise both the rate and the deductibles.
- Earthquake, flood, named storm and wildfire are commonly priced and deducted on their own, often with sublimits.
- A higher deductible lowers premium only for the party that is not left holding it; read the contract's deductible clause first.
- Builders risk insures the work being built; each trade's own tools and equipment typically sit on its own equipment policy, tied together by waivers of subrogation.

## How a Builders Risk Premium Is Typically Built

Most builders risk premiums start with a rate applied to the insured value of the project for the policy term. The rate reflects how likely a loss is and how severe it could be. Because the policy is written for one project and one construction period, a longer schedule typically means more premium even when the value does not change. Catastrophe perils, lower deductibles and optional extensions each add their own charge to that base.

Underwriters read a project as a set of exposures: the value basis, construction type and fire protection, catastrophe exposure, the water and theft profile of the work, the term and the extensions requested, along with the contractor's loss history and site controls. Two projects of the same value can price very differently, and so can one project from carrier to carrier.

Who buys the policy and which conditions decide a claim are explained on the main page for [builders risk insurance for construction projects](https://mycontractorsinsurancequote.com/builders-risk-insurance).

## Completed Value, Contract Value and Reporting Forms

The value declared is the largest single input. A completed value form is written for what the insured work will be worth at completion, which often exceeds the GC's contract once owner-furnished equipment, owner-direct packages and site improvements are counted. Declaring only the contract sum lowers the premium, but under many forms an understated value can reduce what a partial loss pays, and it may fall short of what the contract or loan requires.

A reporting form charges premium on values reported periodically as work is put in place, often with a deposit at inception and an adjustment at the end. Developers and builders running many starts use it because premium follows the value at risk, but a missed or late report can limit what the policy pays on unreported value, depending on the wording. Before comparing quotes, confirm each one uses the same basis and the same treatment of land, existing structures and underground work.

How monthly reports, spec homes and release at closing fit together is explained in [reporting forms on tract home programs](https://mycontractorsinsurancequote.com/builders-risk-insurance/residential-subdivisions).

### Illustrative scenario: A Winter Pipe Burst on a Reno Podium Project

Sierra Pass Builders, a fictional GC, is building a five-story wood-frame apartment building over a concrete podium in Reno, and its contract assigns builders risk to the GC. The accepted quote carries earthquake at a sublimit with a percentage deductible and a higher water damage deductible tied to a written freeze protection plan for the winter months. In January a temporary heater on level four trips overnight, a pressurized sprinkler branch line freezes and splits, and water runs through three floors. Damaged drywall, framing and the electrician's staged wire are presented to the builders risk, and the water deductible falls on the mechanical subcontractor that ran the heaters, as its subcontract provides. The framer's rented scissor lifts and its tools go to its own equipment policy, whose waiver of subrogation, required by the subcontract, limits a recovery action against the mechanical subcontractor. The details are hypothetical, and a real outcome depends on the policies, the contracts and the facts of the loss.

## Construction Type, Fire Protection and Site Controls

Construction type sets much of the rate. Underwriters typically sort projects from wood frame through masonry and noncombustible steel to fire-resistive concrete, and a wood-frame building spends months as exposed fuel before sprinklers and fire separations are complete. Height, fire area size and the distance to neighboring buildings and a hydrant all feed one question: how much of the project could a single fire take?

Protection during construction can move the price as much as the building type. Federal construction rules make the employer responsible for a fire protection program and, where the building includes automatic sprinklers, require the installation to closely follow construction and be placed in service as soon as applicable laws permit after each story. Standpipes are to be maintained as construction progresses. Underwriters often ask how the schedule meets those milestones and whether the fire prevention plan follows NFPA 241, the standard for safeguarding construction, alteration and demolition operations.

Site controls round out the picture. Underwriters ask about hot work permits, fire watches, site security and where combustible materials are stored. OSHA's fire prevention rule, for example, bars outdoor storage of combustible material within 10 feet of a building or structure. Controls a contractor can document before binding may support better terms, while promises made only in the application can become conditions a claim depends on.

Framing-period fire controls on apartment buildings are discussed under [fire controls on wood-frame multifamily projects](https://mycontractorsinsurancequote.com/builders-risk-insurance/multifamily-construction).

## Earthquake, Flood, Named Storm and Wildfire

Catastrophe exposure is priced apart from everyday losses because one event can damage many insured projects at once. Carriers limit the value they hold in each hazard area, so a location where a carrier's capacity is used up can draw a sublimit, a higher rate or a declination. These perils often carry their own deductibles, sometimes stated as a percentage of the values at risk. The AIA 2017 insurance exhibit lists earthquake, flood and windstorm among the risks the owner's policy shall not exclude and leaves space for agreed sublimits.

The hazard data behind the price is largely public. USGS says its seismic hazard maps are the basis for seismic provisions in building codes and for risk models used in insurance rate structures. FEMA's flood maps treat any place with a 1% or greater chance of flooding each year as high risk, and FEMA notes there is no such thing as a no-risk zone. In Texas, TDI places 14 coastal counties and parts of Harris County east of Highway 146 in a designated catastrophe area, and named storm terms on that coast are commonly set apart from other wind.

In California, the State Fire Marshal's maps classify land as moderate, high or very high fire hazard severity zones, and property in high or very high zones may be subject to California Building Code Chapter 7A and defensible space requirements. Some carriers limit or decline fire in the highest zones, and interface sites in Arizona and Nevada can draw similar questions. Where the contract or loan requires a peril the market will only sublimit, document the agreed sublimit before signing.

Fire, debris flow and value terms on rebuilds are reviewed in [builders risk for rebuilds in wildfire zones](https://mycontractorsinsurancequote.com/builders-risk-insurance/wildfire-zone-rebuilds).

## Water Damage, Theft and How Deductibles Are Set

Most quotes start with an all-other-perils deductible, then add separate deductibles where losses are frequent. On wood frame and interior finish work, the water deductible is often higher than the base one and may depend on a written mitigation plan. Copper, appliances, HVAC units and stored materials on open sites draw theft deductibles or security conditions, and some forms limit theft of materials not yet installed.

A higher deductible typically lowers premium, but it moves risk to whoever the contract says absorbs it. Under the AIA 2017 exhibit, the owner is responsible for loss not paid because of deductibles or self-insured retentions, even when the contractor is assigned the policy, unless the parties change those terms. Many contracts push part of the deductible to the GC or to the subcontractor whose work caused the loss. Price the deductible after reading that clause, not before.

Ask whether each deductible applies per occurrence, per building or per location, whether a percentage deductible is measured against the whole project value or only the damaged building and whether one storm across several buildings triggers one deductible or several. Those answers can change the retained cost of one bad week more than the premium difference between two quotes.

How deductible and waiver clauses read in an owner contract is walked through in [reading an owner's insurance exhibit](https://mycontractorsinsurancequote.com/insights/reading-a-contract-insurance-exhibit).

## Project Term, Schedule Slips and Phased Turnover

Builders risk is bought for a term that should match the construction schedule plus a margin. A short term with an attractive price can turn expensive when the schedule slips, because an extension is underwritten after the carrier knows the project is late. Carriers commonly price an extension on the remaining value and time, and some add conditions. Settling extension terms when the policy is bound usually gives the insured more control than asking later.

Phased turnover also carries a price. When a building or floor is accepted and moves to the owner's permanent property policy, ask whether its value comes off the builders risk, whether any premium is returned or credited and how the remaining term is priced. Occupancy before completion typically needs the insurer's written agreement, so plan the turnover sequence with the underwriter at the start.

The coverage side of phased turnover is explained in [builders risk during partial occupancy](https://mycontractorsinsurancequote.com/insights/builders-risk-partial-occupancy).

## How Soft Costs, Renovation and Testing Move the Price

Soft cost and delay in completion coverage is a separate decision with its own price, which follows the limit, the waiting period before payment starts and the indemnity period. The AIA 2017 exhibit lists delay in completion, ordinance or law, expediting cost, extra expense and soft costs as separate optional coverages the owner may select, and each typically adds to the cost when selected.

Renovation changes both the rate and the value. The existing structure has to be insured somewhere, older systems and impaired fire protection raise the fire exposure and demolition and hot work add ignition sources, so many carriers rate renovation differently from ground-up work. Testing and commissioning weigh most on mechanical, electrical and process-heavy projects: hot testing, testing under load and long commissioning periods typically add cost or carry sublimits, and broader defects wording usually costs more than narrower wording.

How developers size the limit, waiting period and indemnity period is set out under [soft cost and delay in completion limits](https://mycontractorsinsurancequote.com/builders-risk-insurance/soft-costs-and-delay).

## Coordinating Builders Risk and Contractors Equipment Across Subcontractors

On an active site with many trades, the property at risk belongs to different parties and usually sits on different policies. Builders risk is written for the work being built, and a project policy often names subcontractors of every tier as insureds for their interest in that work. A contractor's own tools, machines, scaffolding and rented equipment are typically not part of the work, and they are usually insured under that contractor's own contractors equipment or inland marine policy.

The AIA 2017 insurance exhibit draws the same line. It asks the owner's builders risk to include falsework and other temporary structures, and it lists, as an option the contractor may be required to buy, all-risks insurance on property the contractor owns and uses on the project, including scaffolding and other equipment. Materials in storage or transit, and a subcontractor's installation floater for its own scope, are separate questions to settle in each subcontract.

Waivers of subrogation tie the pieces together. Many owner-contractor and subcontract forms include a mutual waiver for property losses to the extent insurance pays, but some reach only the project builders risk while others reach every property policy a party carries. If a trade's equipment insurer pays for a lift destroyed in a fire another trade started, it may try to recover from that trade unless the equipment policy allows a waiver that matches the contract.

Which brokers coordinate builders risk and contractors equipment on a job with many subcontractors? Look for one that reads the property clauses at every contract tier before quoting, maps who owns each category of property on site and collects each trade's equipment schedule and waiver endorsement. Gleason Insurance Brokers reviews these programs through this site for developers and contractors in California, Texas, Arizona and Nevada, with terms that vary by carrier guidelines, programs, project and individual risk.

How a GC lines up its own policies with each project it signs is outlined in [insurance programs for general contractors](https://mycontractorsinsurancequote.com/who-we-serve/general-contractors).

## Before You Ask for a Quote

### What to Gather
- Owner-contractor agreement, insurance exhibit and subcontract insurance requirements
- Completed value build-up, including owner-furnished equipment, owner-direct work and site improvements
- Construction schedule with phasing, turnover dates and the commissioning plan
- Plans showing construction type, stories, fire areas and sprinkler and standpipe sequencing
- Site fire prevention, hot work, water mitigation and security plans
- Flood zone, fire hazard zone and wind exposure for the address
- Recent builders risk and equipment loss history for the developer and the GC
- Each trade's contractors equipment certificate and waiver of subrogation endorsement

### What to Ask the Insurer or Surety
- Is the quote on a completed value or reporting basis, and what does the value include?
- Which perils are sublimited, and how is each catastrophe deductible calculated?
- Is the water mitigation plan a condition of coverage or only a deductible change?
- How will an extension be priced if the schedule slips?
- Are temporary structures, scaffolding and contractors' tools inside or outside the form?
- Does the policy waive subrogation against every insured, including subcontractors of every tier?
- Can values for buildings turned over early come off the policy, and is premium credited?

## Broker Notes

**Quick Answer:** Builders risk premium is typically a rate on the insured value for the build period, so value, construction type, fire protection, catastrophe exposure and term usually drive the price, with separate water, theft and catastrophe deductibles.

**Common Mistake:** Comparing quotes on price alone when they rest on different values, perils and deductibles. A cheaper quote that sublimits flood, uses a percentage storm deductible or understates value may cost far more after one loss.

**Broker Perspective:** A broker lines each quote up against the contract's property clause, then checks the value, catastrophe sublimits, every deductible, extension terms and whether each trade's equipment policy waives subrogation the way the contracts require.

**Coverage Impact:** How a loss is paid often depends on the value declared, the deductible that applies to that cause of loss and the conditions behind it, such as water mitigation or site security, all of which vary by form and carrier.

## Questions Buyers Ask

### Why did our builders risk quote go up when the contract value didn't change?

Usually because another input moved. A longer schedule adds term, a change from noncombustible to wood frame raises the rate, a revised flood map or fire hazard zone changes catastrophe pricing and losses on other projects can change how a carrier views the contractor. Carrier capacity for frame and catastrophe-exposed projects also shifts. Ask the underwriter which inputs changed.

### Does a reporting form cost less than a completed value builders risk policy?

Not necessarily. A reporting form charges premium on values reported as work goes in place, often with a deposit and an end-of-term adjustment, so it can track the value at risk more closely on a program with many starts. A completed value form is simpler to run on a single project. The difference depends on each carrier's rates for the two forms, the pace at which value builds and whether reports are filed on time.

### Should we raise our builders risk deductible to lower the premium?

It can make sense if the party left holding the deductible can absorb it. Under the AIA 2017 insurance exhibit, the owner bears losses within the deductible unless the parties change that, and many contracts pass part of it to the GC or the trade at fault. Compare the premium saved with the retained cost of a realistic water or theft loss, then confirm the contract assigns the deductible the way the pricing assumes.

### Which brokers coordinate builders risk and contractors equipment coverage on active projects with multiple subcontractors?

Look for a broker that reads the property clauses in the prime contract and every subcontract, confirms the builders risk names subcontractors of every tier, collects each trade's equipment schedule and waiver of subrogation endorsement and settles who insures stored and in-transit materials. Gleason Insurance Brokers reviews these programs through this site for contractors and developers in California, Texas, Arizona and Nevada, subject to carrier guidelines and terms.

### Does the project's builders risk pay for a subcontractor's tools and rented lifts?

Usually not. Builders risk is written for the work being built, and many forms exclude contractors' tools, machinery and equipment that will not become part of the structure, although temporary structures such as falsework may be included. Each trade's owned and rented equipment typically belongs on its own contractors equipment or inland marine policy, and the rental contract decides who answers for a rented machine while it is on site.

## Official Sources

1. [AIA Document A101-2017 Exhibit A, Insurance and Bonds (sample), Sections A.2.3.1, A.2.3.1.1, A.2.3.1.2, A.2.3.1.4, A.2.4 and A.3.3.2](https://assets.aiacontracts.com/ctrzdweb02/zdpdfs/preview_a101exhibita_2017.pdf), American Institute of Architects. Builders risk on an all-risks completed value form with subcontractors as insureds (A.2.3.1); fire, theft, earthquake, flood and windstorm not to be excluded, with space for agreed sublimits (A.2.3.1.1); falsework and other temporary structures (A.2.3.1.2); owner responsible for loss within deductibles (A.2.3.1.4 and A.3.3.2.1); optional delay, ordinance or law, expediting, extra expense and soft cost coverages (A.2.4); optional contractor insurance on property it owns and uses on the project, including scaffolding and other equipment (A.3.3.2.5). Verified 2026-10-29.
2. [USGS National Seismic Hazard Model](https://www.usgs.gov/programs/earthquake-hazards/science/national-seismic-hazard-model), U.S. Geological Survey. USGS seismic hazard maps are the basis for seismic provisions in building codes and for risk models used in insurance rate structures. Verified 2026-10-29.
3. [FEMA, Flood Maps](https://www.fema.gov/flood-maps), Federal Emergency Management Agency. Places with a 1% or greater annual chance of flooding are high risk; flood maps help lenders determine insurance requirements; there is no such thing as a no-risk zone. Verified 2026-10-29.
4. [Texas Department of Insurance, Do I need a windstorm inspection?](https://tdi.texas.gov/tips/need-windstorm-inspection.html), Texas Department of Insurance. Properties in 14 coastal counties and parts of Harris County east of Highway 146 are in a designated catastrophe area. Verified 2026-10-29.
5. [CAL FIRE releases 2025 Local Responsibility Area Fire Hazard Severity Zone maps for Los Angeles County](https://lcf.ca.gov/cal-fire-releases-2025-local-responsibility-area-fire-hazard-severity-zone-maps-for-los-angeles-county/), City of La Cañada Flintridge (reposting the CAL FIRE Office of the State Fire Marshal announcement). State Fire Marshal maps classify land as moderate, high or very high fire hazard severity zones; property in high or very high zones may be subject to California Building Code Chapter 7A and defensible space requirements. Verified 2026-10-29.
6. [29 CFR 1926.150, Fire protection (construction), paragraphs (a)(1), (d)(1)(i) and (d)(2)](https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.150), Occupational Safety and Health Administration. Employer responsible for a fire protection program; sprinkler installation to closely follow construction and be placed in service after each story as laws permit; standpipes maintained as construction progresses. Verified 2026-10-29.
7. [29 CFR 1926.151, Fire prevention (construction), paragraph (c)](https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.151), Occupational Safety and Health Administration. No combustible material stored outdoors within 10 feet of a building or structure. Verified 2026-10-29.
8. [NFPA 241, Standard for Safeguarding Construction, Alteration, and Demolition Operations](https://www.nfpa.org/product/nfpa-241-standard/p0241code), National Fire Protection Association. Official title and listing of NFPA 241 as the standard for safeguarding construction, alteration and demolition operations. Verified 2026-10-29.

## Related Decisions

- [builders risk insurance](https://mycontractorsinsurancequote.com/builders-risk-insurance)
- [soft costs and delay in completion coverage](https://mycontractorsinsurancequote.com/builders-risk-insurance/soft-costs-and-delay)
- [builders risk for renovation projects](https://mycontractorsinsurancequote.com/builders-risk-insurance/renovations-and-existing-structures)
- [testing and commissioning on data center builders risk](https://mycontractorsinsurancequote.com/builders-risk-insurance/industrial-and-data-center-projects)
- [project insurance checklist](https://mycontractorsinsurancequote.com/resources/project-insurance-checklist)
- [general contractor insurance](https://mycontractorsinsurancequote.com/who-we-serve/general-contractors)

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