Stump Grinding Costs: What Contractors Charge and Why

Stump grinding is the fastest removal method for most residential stumps, but quotes vary by 3x or more for the same diameter stump depending on access, wood hardness, and how much the contractor wants the job. Here is what the numbers actually look like.

The base rate: diameter pricing

Most contractors price by stump diameter measured at ground level, with rates between $2 and $5 per inch. A 20-inch oak stump — typical for a 30-year-old shade tree — lands between $40 and $100 on the diameter formula alone. The problem is that formula only works for standalone stumps with open access. Almost nothing else does.

Expect a minimum charge of $75–$150 regardless of stump size. Many contractors will not mobilize for less than $150.

What pushes the price up

• Root flare width. The grinding head has to chew through the full flare, not just the trunk. A 20-inch trunk with a 36-inch flare gets priced on the flare.
• Wood hardness. Hickory and locust grind at roughly half the speed of pine or silver maple. Contractors who quote a flat diameter rate and then see hickory will often revise upward.
• Depth required. Standard grinding goes 6–8 inches below grade — enough to sod or reseed over. Going 12+ inches to plant a tree in the same spot costs more and may require a different machine.
• Access. A stump behind a fence line or on a slope adds $50–$150 for hand-carried equipment or extra setup time.
• Debris haul-off. Grinding produces 2–5 times the stump’s volume in chips. Haul-away adds $50–$150 or more depending on quantity.

Multi-stump discounts

Contractors price the first stump to cover mobilization. Getting 3+ stumps done in one visit often drops the per-stump rate by 20–35%. If you have a neighbor with stumps, coordinating the same contractor visit can save both of you money.

DIY: rental rates and reality

Stump grinder rentals run $150–$400 per day depending on machine size. A 9-HP self-propelled unit is barely adequate for stumps under 10 inches. Anything larger wants a 25-HP or bigger machine, which may not be available at every rental center.

Realistic DIY time for a 20-inch stump: 2–4 hours including setup, grinding, and raking chips. Roots extending outward slow things down considerably — the machine only cuts what it can reach.

What grinding leaves behind

The chips left in the hole decompose over 3–7 years depending on wood species and soil moisture. They are nitrogen-hungry as they break down, which can yellow grass seeded directly over them. Fill the hole with topsoil, not just chips, if you intend to plant within two years.

Grinding does not kill roots that extend beyond the grind radius. Some species — cottonwood, aspen, cherry laurel — will send up sprouts from surviving roots. If regrowth is a concern, ask the contractor about grinding radius or treat cut roots with a concentrated triclopyr solution within 30 minutes of cutting.