Excavation & Concrete Contractor Insurance in Minnesota
Heavy iron, buried lines, and a very short pour season.
The William Tuttle Agency arranges insurance for excavation, concrete and site-work contractors across Minnesota — general liability with attention to underground utility strikes, inland marine for excavators, skid steers and attachments, commercial auto for dump trucks and lowboys, and workers' compensation once you have employees. Call (507) 451-1168 or request an excavation insurance quote.
Basements, footings, driveways, septic systems, drain tile, grading and the flatwork that has to cure before the first frost.
Site work has the most expensive equipment in residential construction and the most expensive mistake: hitting something buried. A gas line, a fiber trunk, a neighbor's well. General liability with attention to underground-utility wording is the core, joined by a substantial inland marine schedule for excavators, dozers, skid steers and attachments, commercial auto for dump trucks and the truck that pulls the lowboy, and workers' compensation once you have employees. Gopher State One Call before every dig is both the law and the best loss control there is.
The William Tuttle Agency writes excavation and concrete contractors from one office at 121 W Broadway St in Owatonna. We know the equipment list is long, the season is short, and the underwriter's first question is always about utility locates.
Does liability cover hitting a buried utility?
Generally yes as property damage to others, subject to the policy's exclusions, and it is the claim that defines the trade. Some carriers add specific underground-utility wording, limits or deductibles, so read that section. Minnesota law requires a locate request through Gopher State One Call before excavating, and a strike on an unmarked line after a proper locate is a very different claim from a strike with no ticket. Keep your tickets.
How do I insure excavators, skid steers and attachments?
On an inland marine schedule, sometimes called a contractor's equipment floater. Each major machine is listed by serial number with an agreed or actual-cash value; attachments, compaction equipment and small tools can sit under a blanket. Ask about rented and borrowed equipment, equipment in transit on a lowboy, and whether the policy responds to theft from a job site over a weekend — all three are common claims.
What about dump trucks and the lowboy?
Dump trucks, water trucks and the tractor pulling the lowboy belong on commercial auto, and heavier units may be rated as trucking exposure. Trailers are typically listed for liability while towed with physical damage on the inland marine schedule. If you haul for hire at all, say so — that changes the policy. See trucking insurance if hauling is a meaningful part of the business.
Is concrete flatwork a separate exposure?
Underwriters treat it that way. Flatwork and foundations carry completed operations claims — a heaved slab, a cracked foundation, a driveway that spalls after one winter — and concrete pumping and forming bring their own equipment. Tell us the split between excavation, foundations and flatwork so the classification is right.
What does workers' comp look like for site work?
Minnesota generally requires workers' compensation once you have employees. Trench collapses, struck-by injuries around moving equipment, and back injuries from forming are the serious ones, and the classification reflects that. Trench safety practices and equipment training matter to the underwriter as much as they matter on the job.
Do I need pollution coverage for septic or fuel work?
Often. Septic system installation, fuel-tank removal and any work that disturbs contaminated soil can fall under the pollution exclusion on standard forms. Contractor's pollution endorsements exist for exactly this; if you install or repair septic systems, ask about it by name.
What an excavation policy usually has to cover.
The checklist we work through with a site-work or concrete contractor, one line at a time.
| Coverage | What it responds to | Site-work note |
|---|---|---|
| General liability | Injury to others and damage to property that is not yours | Underground utility strikes are the defining claim |
| Completed operations | Heaved slabs, cracked foundations, failed drain tile | The concrete side of the business |
| Inland marine (heavy equipment) | Excavators, dozers, skid steers, attachments | Schedule each machine; ask about transit and job-site theft |
| Rented / borrowed equipment | Machines you rent for a job | Check the rental waiver against your own coverage |
| Commercial auto | Dump trucks, water trucks, lowboy tractors | Heavier units may rate as trucking |
| Trailers | Lowboys and equipment trailers | Liability follows the auto policy while towed |
| Contractor's pollution (limited) | Septic, fuel tanks, contaminated soil | Commonly excluded unless endorsed |
| Business personal property | Forms, rebar, tools and yard contents | Tied to the yard location |
| Workers' compensation | Employee injuries — trench and struck-by are the serious ones | Generally required in Minnesota once you have employees |
| Umbrella / excess liability | Limits above the underlying policies | Municipal and commercial contracts often require it |
What if a utility strike is on my record?
One large underground claim, a septic book, or a young company without loss history can each make the first carrier decline. Many agents represent a single company. We lead with Farmers Insurance and hold appointments with 20+ additional carriers, including commercial markets such as BTIS, AmTrust, RLI and Tapco — so an operation that does not fit the first market often has somewhere to go. It may simply not be the first market we call. You still deal with one licensed local person in Owatonna who answers the phone. See the carriers we represent.
How much does excavation & concrete insurance cost in Minnesota?
There is no list price for excavation & concrete insurance in Minnesota, and anyone who quotes one without asking questions is guessing. The premium is built from the equipment schedule — excavators and dozers drive the premium, payroll and trench work, dump trucks and lowboys, underground-utility claims history, septic or pollution exposure and contract limits you have to meet. A one-person operation and a ten-person crew doing the same work are priced nothing alike, and the same business is often quoted very differently by different carriers — which is the reason to compare more than one. The honest number is a quote: ten minutes with a licensed agent, and you will have it.
Do you need excavation & concrete insurance in Minnesota?
Minnesota generally does not require a business to carry general liability insurance by statute, but excavation & concrete insurance is required in practice far more often than by law: by landlords and leases, by general contractors and clients before you start, by lenders, and by licensing boards where they apply. Workers' compensation is generally required in Minnesota once you have employees, and any vehicle used for the business needs commercial auto. The question is rarely whether you need it; it is what the people you work with will ask to see.
How do I get a certificate of insurance for my business?
Call or text (507) 451-1168 with the name and address of whoever needs it. Certificates of insurance are part of the service, and when a contract asks for additional-insured status, a waiver of subrogation or specific limits, we read the requirement and tell you plainly whether the policy meets it before you sign. Send the insurance section of any contract over to us; that is what we are for.
Excavation insurance, answered plainly.
Is hitting a gas or fiber line covered?
Generally yes as property damage to others, subject to the policy's exclusions and any underground-utility wording. Call Gopher State One Call before every dig and keep the tickets — a strike after a proper locate is a very different claim.
How are excavators and skid steers insured?
On an inland marine schedule, listed by serial number, with attachments and small tools under a blanket limit. Ask about equipment in transit and theft from a job site.
Does my dump truck go on commercial auto?
Yes. Dump trucks, water trucks and lowboy tractors belong on commercial auto, and heavier units may be rated as trucking exposure.
Do I need pollution coverage for septic work?
Often. Septic installation and fuel-tank work can fall under the pollution exclusion on standard forms. Ask about a contractor's pollution endorsement by name.
How much does excavation & concrete insurance cost?
It depends on the equipment schedule — excavators and dozers drive the premium, payroll and trench work, dump trucks and lowboys and your claims history — there is no list price. Different carriers quote the same business very differently, so compare. A quote takes about ten minutes.
Is excavation & concrete insurance required in Minnesota?
Minnesota generally does not require a business to carry general liability insurance by statute, but excavation & concrete insurance is required in practice far more often than by law: by landlords and leases, by general contractors and clients before you start, by lenders, and by licensing boards where they apply.
How do I get an excavation insurance quote?
Call or text (507) 451-1168, stop by 121 W Broadway St in Owatonna, or request a quote online. A licensed agent will ask about your equipment list, trucks, the split between excavation and concrete work, payroll and any hauling, quote Farmers Insurance first, and check brokerage markets where they fit.