We’ve placed owner-builder builders risk for self-managed custom homes, ADUs, and large additions across all 50 states, including projects standard markets declined the same week.

BuildersRiskNerd is a brand of ContractorNerd Insurance Services, LLC, a licensed insurance producer (CA License #6015566). We’re a broker, not an insurer. Tell us about the project, and we’ll come back with quotes from carriers that fit.

If you’re acting as your own general contractor, standard builders risk policies often won’t cover you. Owner-builder builders risk is a specialized version designed for homeowners managing their own construction. We shop coverage from specialty carriers in our panel, and your lender gets a certificate that satisfies their construction loan requirements. The full mechanics of how the product works, including coverage triggers and term length, live on our main builders risk guide.

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What “owner-builder” actually means

An owner-builder is the legal owner of the property who is also acting as the general contractor for the construction or renovation. You’re not hiring a GC. You’re pulling the permits, scheduling the subs, and signing off on the work yourself.

The legal definition varies by state, and that matters for both the building department and the carrier underwriting your policy. California is the strictest example. The Contractors State License Board allows owner-builders only on personal residences, only on properties you own and live in for at least 12 months after completion, and you can’t sell the home within a year without disclosing you built it yourself. Texas and Florida are more permissive but still require an owner-builder declaration filed with the local building department before permits issue.

Most states require that declaration in writing. Some require evidence the project is for personal use, not for resale. A handful require you to be on the construction loan as the borrower. If you’re financing the build, your lender will already have you set up correctly. If you’re paying cash, you’ll need to confirm the local declaration requirement yourself.

For California-specific rules, wildfire exclusions and the CSLB owner-builder process get their own page.

Why most builders risk policies decline owner-builders

Carriers price builders risk based on loss frequency and loss severity. The single biggest variable in loss frequency on residential construction is professional GC oversight. A licensed GC running the site has insurance, scheduling discipline, sub vetting, and a financial stake in preventing claims. An owner-builder, no matter how capable, doesn’t show up in the underwriting model the same way.

Most admitted carriers exclude owner-builder projects by default. You’ll see this in the application: “Is the owner acting as the general contractor?” Check yes on a standard form and the application either gets declined or routed to a different underwriter who may not write owner-builder at all. Some carriers will decline mid-policy if they discover an owner-builder situation that wasn’t disclosed. That rescission risk can leave you uninsured during the most expensive months of the build.

The carriers that do quote owner-builders sit in two camps. The first is specialty surplus lines markets, including Lloyd’s syndicates and a few non-admitted domestic carriers with owner-builder programs. These carriers ask additional underwriting questions about your construction experience, project complexity, whether you’re using a licensed sub-GC for oversight, and the protection class of the site. The second is a small group of admitted carriers in select states that quote owner-builders with extra scrutiny, often capping the project value or requiring a higher deductible.

When BuildersRiskNerd shops an owner-builder submission, we route it to the markets that actually quote this risk. If a carrier requires sub-GC oversight or specific experience documentation, we tell you upfront so you don’t waste time submitting where you’ll be declined.

The two policies owner-builders actually need

Most owner-builders walk in thinking they need one policy. They actually need two.

Builders risk covers the building under construction against fire, theft, vandalism, weather, and other named perils. It pays to rebuild if the structure burns down before completion. It does not pay if a delivery driver trips on your job site and breaks an ankle.

General liability covers third-party bodily injury and property damage caused by the work. If a subcontractor’s tool falls off scaffolding and damages a neighbor’s car, that’s a GL claim. If someone gets hurt on your site, that’s GL too.

When you hire a GC, the GC carries GL on the work and lists you as an additional insured. When you’re the owner-builder, you’re the responsible party. Your subs carry their own GL on their portion, but if a sub is uninsured or underinsured, the claim flows up to whoever signed the permit, which is you. That coverage gap between builders risk and general liability is the most expensive misunderstanding owner-builders make.

BuildersRiskNerd shops builders risk only. For owner-builder GL, you have a few options. Some homeowners get a short-term contractor’s GL policy through a specialty broker. Others rely on rigorous sub-vetting and require certificates of insurance from every sub showing you as additional insured before they set foot on site. The cleanest path is both. We can refer you to a sister broker for the GL piece if you need a recommendation.

Either way, do not start construction without confirming who carries which coverage. A common scenario: the owner-builder buys builders risk, assumes the subs handle “everything else,” and finds out after a slip-and-fall that the lead sub’s GL excluded the type of work being done.

What lenders require from owner-builders

If you’re financing the build, your lender drives your insurance requirements. Most traditional banks won’t lend to owner-builders at all. Construction loans are already higher-risk products, and self-managed builds add a layer most retail banks won’t touch.

The lenders who do finance owner-builders are usually specialty construction lenders or non-bank private money funds. Lima One, Kiavi, RCN Capital, and a handful of regional credit unions are common names. Their certificate requirements typically include explicit owner-builder language, mortgagee and loss payee endorsements with “ISAOA ATIMA” formatting, and a policy term that runs at least through your loan maturity date plus a buffer.

Many of these lenders also require evidence of construction experience before they fund. A first-time owner-builder building a 4,500-square-foot custom home from scratch is a different file than a real estate investor on their fifth flip. Some lenders ask for a sub-GC oversight clause in the contract, where a licensed contractor agrees to supervise the build even though you’re the named owner-builder. That oversight clause sometimes makes the difference between an admitted carrier quote and surplus lines pricing.

When the certificate goes back to the lender, it has to match the loan documents exactly. The named insured needs to read identically to the borrower on the loan. The mortgagee clause language has to match. The address has to match the legal description, not just the street address. Lenders kick back certificates for spelling differences in street suffixes. BuildersRiskNerd issues lender-ready certificates same-day after a policy binds, with whatever endorsement language your specific lender requires.

What owner-builder builders risk typically costs

Owner-builder pricing runs roughly 20 to 30 percent higher than the same project would cost with a licensed GC running it. Some carriers price the delta as a percentage load on the base rate. Others underwrite from scratch with a different rate table.

Expect the following ranges based on submissions we’ve placed:

  • Smaller renovations and ADUs in the $150K to $300K project value range typically run $900 to $2,400 in annual premium, compared to $700 to $1,800 with a GC.
  • Mid-size custom homes in the $500K to $900K range typically run $2,200 to $5,500, compared to $1,700 to $4,200 with a GC.
  • Larger custom builds above $1.2M move into harder-to-place territory, often surplus lines, with premiums starting around $5,000 and rising sharply with complexity, slope, fire territory, and remoteness.

These are real ranges, not quotes. Final pricing depends on your state, protection class, construction type, term length, and the carrier’s appetite for owner-builder risk that month. The variable that surprises most owner-builders is term length: a 12-month policy on a build that runs 14 months means paying for a 6-month extension at a higher monthly rate. Build buffer in when you bind. We typically recommend term length and policy structure based on your actual schedule, not your optimistic schedule.

Common claims on owner-builder projects

Theft of materials is the number one claim on owner-builder sites. No GC means no full-time site supervisor, no daily lockup routine, and often no temporary security fencing during framing. Copper wire, lumber, appliances, and HVAC equipment all walk off sites, and the dollar amounts add up fast on custom builds where finishes are stored on-site for weeks before installation.

Three scenarios from claims we’ve seen on placed business:

A custom home in central Texas had $42,000 of cabinetry stolen from the garage three weeks before substantial completion. The cabinetry had been delivered early to dry in the conditioned space. Builders risk paid the replacement cost minus the deductible. The theft endorsement was the deciding factor; without it, the limit on stolen materials would have capped the recovery at $5,000.

A two-story addition in California had a hot work fire when a sub was soldering copper plumbing on a Friday afternoon. Smoldering insulation caught fire overnight after the sub had left. The fire damaged framing across two rooms and the new HVAC ducting. Total paid: $87,000.

A vacant home renovation in Massachusetts had wind damage to the unfinished roof underlayment during a March storm. The roofer had dried-in the structure but hadn’t installed shingles yet. Water damage spread to subfloor and partial drywall on the second floor. The claim paid $31,000 after the named storm deductible.

Prevention on owner-builder sites mostly comes down to three things: temporary fencing on any site with high-value materials, a hot-work protocol with a 30-minute fire watch on every welding or soldering session, and dry-in milestones that match weather windows in your state.

Mistakes owner-builders make with insurance

The first mistake is buying a standard builders risk policy without disclosing owner-builder status. The application question gets answered honestly or the carrier finds out at claim time, and the claim gets denied for material misrepresentation. Disclose upfront, even if it costs more.

The second is buying builders risk and assuming GL is handled elsewhere. This goes back to the two-policy section above. The fix is either buying owner-builder GL alongside, or aggressively vetting subs for adequate GL before they start work.

The third is underestimating soft costs. Architects, permits, engineering, finish materials, and project management costs add up to 15 to 25 percent of total project value on a custom home. The base builders risk policy doesn’t always include soft costs by default. Ask whether your policy includes a soft costs endorsement, and increase the limit if your project leans design-heavy.

The fourth is buying a 6-month or 12-month policy on a build the contractor’s schedule says will take 8 or 14 months. Construction runs long. Plan for it.

How to get an owner-builder quote through BuildersRiskNerd

BuildersRiskNerd shops builders risk for owner-builders in all 50 states. The submission takes about 5 minutes online. Have these details ready before you start:

  • Project address and site protection class (your insurance agent or the local fire department can confirm)
  • Total project value, including soft costs
  • Construction start date and target completion date
  • Loan information if you’re financing, including the mortgagee clause language
  • Whether you’re using a sub-GC or self-managing fully
  • Any prior claims on the property or on you personally in the past 5 years

We come back with quotes within one business day on most submissions, faster if your state and project profile fit a market we shop frequently. Once you bind, the certificate goes to your lender same-day.

Start your owner-builder quote →

Frequently asked questions

Can I get builders risk insurance if I’m acting as my own general contractor? Yes, though most standard markets decline owner-builder business. You need carriers that specifically write owner-builder builders risk, which is a smaller subset of the market. BuildersRiskNerd shops owner-builder submissions to surplus lines and select admitted carriers that quote this risk class.

How is owner-builder builders risk different from a regular policy? The coverage is similar in structure, but premiums typically run 20 to 30 percent higher and underwriting questions are more detailed. Carriers ask about your construction experience, whether you’re using sub-GC oversight, and the project complexity. Some carriers cap the total project value or require a higher deductible.

Do I also need general liability if I’m an owner-builder? Yes, in almost every case. Builders risk covers the structure being built. General liability covers third-party injury and property damage caused by the work. If a sub is uninsured or underinsured, liability flows back to whoever pulled the permit, which is you as the owner-builder.

Will my lender accept the certificate? If your lender accepts owner-builder loans, they accept owner-builder certificates. We issue lender-ready certificates same-day after binding, with the mortgagee clause, ISAOA ATIMA language, and any endorsements your specific lender requires.

How long does owner-builder coverage last? Most policies are written for 6 to 12 months with extensions available if the project runs long. We typically recommend matching the term to your construction schedule plus a 60-day buffer, since extensions mid-policy often cost more per month than the original term.

How much does owner-builder builders risk cost? A $250K renovation runs roughly $900 to $2,400. A $750K custom home runs roughly $2,200 to $5,500. Builds above $1.2M start around $5,000 and rise based on complexity, location, and term length. Pricing depends on your state, protection class, and carrier appetite. The deeper cost breakdown lives here.

BuildersRiskNerd is a brand of ContractorNerd Insurance Services, LLC, a licensed insurance producer (CA License #6015566). All insurance products and services are offered through ContractorNerd Insurance Services, LLC. We’re a broker, not an insurer. Policies are underwritten by admitted and non-admitted carriers.