How to Start a Stump Grinding Business

How do you start a stump grinding business from scratch?

Register the business, call your state about tree or arborist licensing, buy general liability, get a grinder and a trailer, learn to grind by ear, then quote stumps for local tree crews.

This trade has a low floor. You can start by renting a walk-behind for $85 to $160 a day and reselling that day at $150 to $500 per stump, or you can put $20,000 into a tracked machine and go straight at lot clearing. Most people who last start in the middle: a used grinder and a trailer for $6,000 to $10,000, grown out of cash flow.

The order below matters. Insurance and the 811 call come before the first paid job, not after. One clipped fiber line or one cracked irrigation main on a job you were not insured for is how a new stump business ends in week three.

• Pick your lane. Residential single stumps are the volume business at $131 to $438 a job. Subcontracting for tree removal companies pays $800 to $2,500 a day, but only when they have a backlog to hand you.
• Form an LLC, get an EIN, then call your state. About a dozen states license tree work, and California treats stump grinding as licensed tree contracting on any job where labor plus materials passes $500.
• Buy general liability before you touch a stump. A solo operator pays $500 to $1,500 a year. Tree-rated policies run $138 to $237 a month because the risk class sits above lawn care.
• Rent before you buy. A Home Depot walk-behind is $85 to $160 a day. A 25 to 30HP Sunbelt tracked walk-behind is $300 to $400 a day and needs its own equipment trailer to move, so price the haul before you price the job.
• Buy the machine and the trailer together. A used grinder plus a utility trailer is the $6,000 to $10,000 lean start, and new 6x12 utility trailers run $1,675 to $2,595.
• Grind ten free stumps first. Your own yard, family, one street of neighbors. Learn the sound of rock versus wood, learn your sweep speed, and learn how long a 24 inch stump really takes.
• Set your per-inch rate and your minimum. $3 to $7 per diameter inch with a $100 to $150 minimum charge is the structure customers already expect to hear.
• Call 811 two full business days before the first paid grind. Locates are free. Hitting a buried gas or fiber line runs $3,500 and up in repairs, plus fines and liability.

How much does it cost to start a stump grinding business?

A used walk-behind grinder plus a trailer puts you on the road for $6,000 to $10,000. A tracked production machine, truck and full insurance program pushes the real number past $20,000.

The whole spread is the machine. Published starting ranges for this trade run $6,000 to $10,000 for a used grinder and trailer, and $20,000 and up once you want advanced equipment. Broader tree service startup numbers land at $10,000 to $50,000 basic, or $80,000 to $130,000 once you own a chipper and a full truck setup.

Do not buy the machine you want in year three. Rental exists precisely so you can prove demand first, and industry advice is to keep renting grinders until weekly volume justifies buying one.

What licenses, certifications and insurance do you need to grind stumps?

No federal license exists. Thirteen states license tree work, from California's C-49 to Louisiana's arborist license at $100 a year. Everyone needs general liability, usually $500 to $1,500 solo.

Requirements vary by state, and in a lot of places by city. Treat the list below as a map and confirm with your own state board before you quote. The baseline in most states is simple: a state landscaping or tree service business license, proof of general liability, and 811 compliance.

• Thirteen states run a tree or arborist credential: Alabama, California, Colorado, Connecticut, Florida, Hawaii, Iowa, Kansas, Louisiana, Maine, North Carolina, North Dakota and Oregon. New Jersey requires registration with the Board of Tree Experts plus a Licensed Tree Expert or Licensed Tree Care Operator at the principal office and each branch, renewed every two years.
• California is the strictest and the most cited. Stump grinding sits explicitly inside the tree contractor scope of work, and a license is required once combined labor and materials passes $500. The old C-61/D-49 Tree Service classification was replaced by C-49 Tree and Palm Contractor effective January 1, 2024. Budget $450 for the non-refundable application, $200 sole owner or $350 non-sole owner for the initial license, and a $25,000 contractor bond.
• Louisiana requires an arborist license to work on trees for a fee. The exam is $150 and the annual license is $100. The state licenses about 500 commercial arborists, and there is a separate Utility Arborist class for rights-of-way work.
• Connecticut charges $200 for the arborist exam and $200 for the application, with an initial license around $285. Sources disagree on renewal, listed both as $285 and as $125 on a three year cycle, so ask DEEP directly. Twelve continuing education credits are required within any five year period.
• Texas has no statewide tree contractor license and stump grinding is included in that. In Florida, Broward County dropped its Tree Trimmer Certificate of Competency on July 1, 2025 under HB 735, which had previously required ISA Certified Arborist status for the Class A license.
• ISA Certified Arborist is rarely required by law but it wins commercial and municipal bids. First attempt costs $335 for members and $419 for non-members. Eligibility is three years of full-time arboriculture experience, or an approved degree plus one to two years.
• The permit trap is the removal, not the grind. Grinding a stump is usually unregulated, but many cities gate tree removals at 6 to 12 inches diameter. Permits run $50 to $500, and unpermitted removal of a protected tree draws fines up to $30,000 per tree in San Jose and up to $100,000 per tree for protected oaks in Los Angeles.
• Bundling helps. Buying general liability, commercial auto and equipment coverage together typically saves 18 to 25 percent versus buying each separately.

How much should you charge for stump grinding?

Quote by diameter inch. Most operators charge $3 to $7 per inch with a $100 to $150 minimum, so a single residential stump lands between $131 and $438.

Diameter inch is the trade's quoting unit. Published ranges run $2 to $5, $2 to $6, $3 to $7, and $4 to $10 per inch at the premium or hard-access end. Measure at grade, across the widest point, not at the trunk. The national average for a single stump is about $272 per job, with the typical range $131 to $438.

Watch what straight per-inch math does to a big stump. A 30 inch stump at $5 an inch quotes out at $150, but the size tables put a 24 to 36 inch stump at $250 to $500. Grind time does not rise with diameter, it rises with the volume of wood, and volume roughly squares. Price anything over 24 inches at the top of the per-inch range or off a size floor, never off your small-stump rate.

WORKED EXAMPLE: Marcus runs a used tow-behind wheeled grinder and quotes a 26 inch silver maple in a fenced 1970s backyard, plus two 8 inch privet stumps in the same yard. The maple is a gate-access job on a hardwood stump, so he prices it at the top of the range, $10 per diameter inch, which is $260 and lands inside the $250 to $500 band a 24 to 36 inch stump belongs in. The two privets go on at $50 each, so $100. The homeowner wants the mound gone and grass by fall, so he adds chip haul-off on the maple at $4 per inch, which is $104, and topsoil backfill at $10 per inch, which is $260. He rakes the privet shavings into the bed for nothing. The ticket is $724. Two hours of grinding burns about 3 gallons of gas at the 0.8 to 1.6 gallons an hour a machine that size drinks, and he replaces four Greenteeth at $8 each, which is $32. Consumables land under $50 on a $724 ticket, which is why gross margin in this trade gets quoted as high as 85 percent before overhead. Net is the honest number. Established firms target about 30 percent profit per job once insurance, the truck, the hour spent driving and dumping chips, and his own time come out, and 30 percent of $724 is $217.

The two numbers that decide whether you make money are the minimum charge and the additional-stump price. Most contractors set a $100 minimum, with the range running $80 to $160. Each extra stump on the same visit bills $30 to $75 and costs you almost nothing, because the trailer is already unhooked and the machine is already warm.

Chips are the customer's real complaint. A grind leaves a mound of shavings, and haul-off is billed separately at $2 to $6 per diameter inch with topsoil backfill adding about $10 per inch. On a 24 inch stump that is roughly $120 in hauling and $240 in fill on top of the grind. Say this out loud during the quote or you will eat it.

How do you get your first stump grinding customers?

Tree removal crews are your best source, because every removal leaves a stump. Back that with Google Local Services Ads, yard signs on finished jobs, and door knocking the closest neighbors.

Start with the tree companies. Most of them hate stump work: it is twenty minutes of grinding, a separate machine, and a chip pile the homeowner complains about. Walk into every tree service, arborist and land clearing outfit within thirty miles with a one page rate card showing your per-inch price and your subcontract day rate of $800 to $2,500. Bring the insurance certificate to that first meeting. A tree company that subs work to an uninsured grinder inherits your liability, and the good ones know it, so the certificate is what closes the relationship. Three of those relationships will carry your first year.

WORKED EXAMPLE: Dana puts $600 into Google Local Services Ads in a mid-size market where tree service leads run about $45 each. That buys roughly 13 verified leads. She answers every call inside two rings and quotes from photos plus a same-day walk, and closes 5 of them. Those 5 jobs average $275, which is $1,375 in revenue against $600 in ad spend, so her lead cost per booked job is $120. That is 44 percent of a single-stump ticket, which is brutal on its own. What saves the math is that two of the five customers had a second stump in the same yard at $50 each, adding $100 for fifteen extra minutes, and every finished job puts a yard sign on a street where three other people have been staring at a stump for two years.

Lead prices vary hard by market. Tree service leads average $35 to $65, run $80 to $100 in major metros, and drop to $25 to $40 in smaller markets, with the overall range $20 to $80 per verified lead. Run the smaller-market math before you assume ads do not work.

• Rate card to every tree service, arborist, landscaper and fence company in a thirty mile radius. Fence crews hit stumps constantly on line clearing.
• Google Business Profile with photos of the hole filled and grass growing, not just the machine. Nobody buys a grinder. They buy a flat yard.
• Yard sign on every finished job, and knock the four closest doors before you hook the trailer back up.
• Google Local Services Ads, budgeted small. Tree service leads average $35 to $65, hit $80 to $100 in major metros, and drop to $25 to $40 in smaller markets.
• Ask property managers, HOAs and municipal parks departments about multi-stump lists. Stump removal inside a clearing job bills $150 to $500 per stump, so a list of twelve is $1,800 to $6,000. That is the same day of work a tree company would sub to you for $800 to $2,500, which is the argument for going direct.
• Offer the winter price. November through February is the trough and 10 to 30 percent off keeps the machine moving instead of parked.
• Take the small ugly jobs early. A $150 stump nobody else wants to drive to is still a review, a yard sign and a neighbor.

What equipment and software do you actually need?

One grinder, one trailer, a truck rated to tow it, spare teeth at $6 to $13 each, safety gear, and a phone app that quotes, invoices and takes card payments.

Teeth are the consumable that decides your month. Greenteeth run $6 to $10 each and Sandvik-style teeth about $13, and a full set gets chewed in one job if the stump hides rock, old fence wire or rebar. Sharpening instead of replacing averages about 70 percent savings, and re-tipping teeth that cannot be sharpened saves 30 to 50 percent.

Plan maintenance on hours, not on feel. Preventive service every 100 operating hours is the standard interval for most fleet-owned walk-behinds, and maintenance runs above 12 percent of annual operating cost for roughly 39 percent of small contractors. Fuel is smaller than people expect. A small gas walk-behind burns about 0.5 to 0.66 gallons an hour and a larger petrol machine 0.8 to 1.6, though operators quote 2 gallons an hour as a rough rule of thumb. Fuel came to about 10 percent of operating cost at one grinding company. Teeth cost you more than gas does.

What should the first 90 days look like?

Weeks one and two are paperwork, insurance and practice grinds. Weeks three to six are tree company introductions and your first paid stumps. Weeks seven to twelve build repeat referral volume.

Two things gate the first 90 days in this trade, and neither one is effort. The first is a certificate of insurance. No tree company hands subcontract work to an uninsured grinder, so the certificate is what actually unlocks the $800 to $2,500 day rate, not the sales call. The second is knowing your own minutes per diameter inch. Until you have a couple dozen stumps behind you, you cannot quote off a tape measure, and quoting off a tape measure in the customer's yard is the whole job.

What mistakes kill new stump grinding businesses?

Skipping the free 811 locate, quoting without walking the stump, grinding shallower than four inches, leaving the chip pile, and buying a $35,000 machine before you have steady weekly work.

Every mistake below is specific to this trade, and every one of them is common. Buried metal is the classic failure mode: old fence wire, nails and rebar dull or snap teeth, damage the wheel and cause violent kickback. There is a documented case of rebar wrapping a cutter wheel eight complete turns and breaking the shaft bearing carrier. Street-tree stumps are the worst offenders and barbed wire kills teeth outright. Rocks sound different from wood when you hit them, which is why experienced operators grind by ear.

• Skipping 811. Locates are free if you call two full business days before you dig. Damaging a buried line makes you responsible for repairs averaging $3,500 and up, plus fines and liability.
• Quoting from a photo. Diameter at grade, backyard access, slope, fence gates and hidden rock all change the number. A phone quote on a 30 inch stump you have not seen is a job you will do for free.
• Grinding only three inches deep. The spec is 4 to 6 inches below grade so seed or sod will take. Shallower than four inches and grass will not grow properly, and you will be back for nothing.
• Quoting a replant or a patio at grind prices. Replanting a tree or pouring concrete in the same spot needs 12 inches or deeper, which is a different job at a higher price.
• Giving away the chips. Haul-off is $2 to $6 per diameter inch and backfill adds about $10 per inch. On a 24 inch stump that is roughly $120 plus $240 you just donated.
• Buying the big machine first. Self-propelled grinders run $35,000 to $55,000 used and $55,000 to $95,000 new. Rent at $85 to $400 a day until weekly volume covers the payment.
• Running one set of teeth. A single job with hidden wire can eat a set. Carry spares and use a sharpening service, which averages about 70 percent savings versus buying new teeth.
• No commercial auto policy. You tow a grinder on public roads. One truck with a trailer runs $1,500 to $3,000 a year and personal auto will not cover the claim.
• Ignoring the removal permit. The grind is usually unregulated, but the removal that created the stump may not have been. Fines run $500 to over $100,000 per tree depending on jurisdiction.

Is a stump grinding business worth it?

Yes, if you keep the machine cheap. Three jobs a week at a $275 average is about $42,900 in revenue and near $12,870 net. Multiple crews reach $300,000 to $400,000.

The published solo year-one model is three jobs a week at a $275 average, which is roughly $42,900 in revenue. Run it to the bottom line before you quit anything. At the 30 percent net margin established firms target, $42,900 becomes about $12,870 in your pocket, which is exactly why nobody stays at three jobs a week. That is part-time money for part-time hours, and it is achievable while still holding a job. One operator who documented the switch out of a W-2 grossed $9,000 in his first month and was on track to gross $200,000 in the year.

Margins are the reason people stay. A single trailer-mounted grinder earns $100 to $150 per hour of actual production, and one stump ground to chips in about twenty minutes bills $150 to $500. Gross margin gets quoted as high as 85 percent before overhead, but the number that matters is net: established firms target about 30 percent profit per job, and stump grinding services overall are cited at $110,000 to $650,000 a year at roughly 32 percent margins.

The ceiling is crew count and drive time, not grinding speed. At a $275 average ticket and twenty minutes of grinding per stump, the binding constraint is windshield time and setup, not the machine. Scaling to five or six days a week with multiple crews reaches $300,000 to $400,000, and full-service operations with owned ground machinery carry $85,000 to $150,000 or more in equipment to get there.

Route density is the whole game. Two stumps on the same street bill $150 to $300 for the first and only $30 to $75 for the second, but the second one costs you almost no time. Build a business that grinds three stumps in one neighborhood instead of three stumps in three towns.

When is stump grinding busiest during the year?

Spring through summer is peak, because storms and new growth drive removals and stump work trails each one. November through February is the trough, when discounts of 10 to 30 percent appear.

Your calendar is downstream of the tree removal calendar. Peak season starts in spring and runs through summer, driven by warm weather, storm damage and new growth. Atlantic hurricane season runs June 1 to November 30 and fills tree crew schedules with emergency calls, which means a queue of stumps waiting on someone with a grinder. After a major storm, homeowners can wait weeks or months for non-emergency work, and that backlog is your booking.

Winter is slower, not dead. December through February is generally the cheapest window for customers, with February and March cited as the cheapest months for removals, and off-season discounting of 10 to 30 percent is how crews stay working. Frozen ground also protects turf and beds, which is a real selling point on a manicured yard. Rural markets swing harder, with seasonal demand shifts up to 27 percent tied to harvesting and land preparation cycles.