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Let's Break Ground.

Reach out for expert excavation, grading, utilities, and hardscaping services. Quick response, straight answers, and a free project consultation.

Call Cody 406-214-0606 Call Dev · 406-581-8903

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Keystone Contracting LLC

Cody Mechling
406-214-0606Cdmech@mtkeystone.com

Dev Thomas
406-581-8903Dthomas@mtkeystone.com

Service Area
90-mile radius of Bozeman, MT

Bozeman
Big Sky
Three Forks
Livingston
Belgrade
Gallatin Gateway

Taking on new projects now — winter routes fill early, too.

Digging for retaining wall installation. General contractor excavation partner Big Sky. Precision land leveling for building pad. Excavation of steep slopes Bozeman area. Heavy hauling of excavated materials. New home build site preparation.

. Repairing broken water main line. New construction utility excavation. Installing holding tank for commercial property. Septic field replacement in rural Montana.

Safe and efficient residential excavation. Commercial building foundation dig. Earthwork services for ranches and estates. Preparing subgrade for new driveway installation. Building pad construction services.

Gravel hauling and delivery services near Three Forks. Dump truck delivering aggregate material. Construction material hauling and trucking. Site stabilization and compaction services.

Road base material delivery. Professional dirt hauling contractor. Erosion control grading techniques. Hauling rock and crushed asphalt. Grading contractor for equestrian facilities. Land grading for drainage and water runoff.

Man operating construction vehicle through glass enclosure

Keystone Contracting heavy equipment operator Bozeman. Excavation company team members Big Sky. Professional site work Montana. Trusted general contractor partner. Local excavation experts Gallatin Valley. Commercial and residential groundwork servic

Clearing trees for new road construction. Utility trenching in rocky Montana soil. Digging for retaining wall installation. General contractor excavation partner Big Sky. Precision land leveling for building pad.

Basement excavation and hauling. Digging foundation footings for a luxury home. New construction groundwork services. Professional site development Bozeman. Excavator moving dirt on large ranch property.

Two men in black hoodies and red caps operating heavy construction machinery outdoors, partially obscured by steam or smoke, with green foliage in the background.

Basement excavation and hauling. Digging foundation footings for a luxury home. New construction groundwork services. Professional site development Bozeman. Excavator moving dirt on large ranch property.

Basement excavation and hauling. Digging foundation footings for a luxury home. New construction groundwork services. Professional site development Bozeman. Excavator moving dirt on large ranch property.

Excavator working near Livingston, MT. Safe and efficient residential excavation. Commercial building foundation dig. Earthwork services for ranches and estates. Preparing subgrade for new driveway installation.

Road base material delivery. Professional dirt hauling contractor. Erosion control grading techniques. Hauling rock and crushed asphalt. Grading contractor for equestrian facilities. Land grading for drainage and water runoff.

Preparing subgrade for new driveway installation. Building pad construction services. Final grade excavation for landscaping. Excavator bucket loading dirt into dump truck. Custom home foundation dig out. Site work for ADU foundation Bozeman.

Preparing subgrade for new driveway installation. Building pad construction services. Final grade excavation for landscaping. Excavator bucket loading dirt into dump truck. Custom home foundation dig out. Site work for ADU foundation Bozeman.

Gravel hauling and delivery services near Three Forks. Dump truck delivering aggregate material. Construction material hauling and trucking. Site stabilization and compaction services.

Gravel hauling and delivery services near Three Forks. Dump truck delivering aggregate material. Construction material hauling and trucking. Site stabilization and compaction services.

Reliable site work solutions. Experienced excavation crew Bozeman MT. Foundation preparation specialists. Contact Keystone Contracting for a free quote. Licensed and insured excavation company.

Reliable site work solutions. Experienced excavation crew Bozeman MT. Foundation preparation specialists. Contact Keystone Contracting for a free quote. Licensed and insured excavation company.

Excavation company in Big Sky. Excavation Company in Livingston. Excavation company in belgrade. Excavation company in Bozeman. Excavation company in gallatin county.

Keystone Contracting heavy equipment operator Bozeman. Excavation company team members Big Sky. Professional site work Montana. Trusted general contractor partner. Local excavation experts Gallatin Valley.

Backyard construction site with an excavation trench for plumbing, wooden decking, a pile of firewood, a swing, tools, and household items.

Construction site in front of a house with an excavator moving large rocks onto a flatbed truck, a person operating the excavator, and a broom leaning against a parked vehicle. The house has gray siding, white trim, and a wooden roof, with a garage d

Keystone Contracting heavy equipment operator Bozeman. Excavation company team members Big Sky. Professional site work Montana. Trusted general contractor partner. Local excavation experts Gallatin Valley.

A gravel driveway leads towards green fields and mountains in the distance under a cloudy sky. On the left side, there is a house with a white fence, and on the right side, there are parked cars.

Residential utility line hookups. Commercial water and sewer line services. Backfilling utility trenches safely. Septic system design and installation expertise.

Construction site with soil, gravel, green metal pipes, and heavy machinery under a clear blue sky in a rural landscape.

Construction site with a partially built stone retaining wall, a house on the left, and a small tracked loader on the right. The area is being prepared with dirt and gravel, with rolling hills and sparse trees in the background.

A construction worker and a technician with a measuring instrument on a construction site with soil excavation.

Rock retaining wall under construction along a dirt driveway in a hilly, grassy area.

Underground utility installation with large black septic tanks and green corrugated pipes at a construction site next to a house.

Garden bed with black landscaping fabric and gravel, surrounded by green grass and wooden fencing, with houses and a tree in the background.

Excavating for a large boulder retaining wall in Bozeman. Keystone Contracting managing slope stabilization and erosion control.

Natural stone retaining wall construction in Big Sky MT. Structural earthwork to create level tiers on a steep hillside.

A yellow construction excavator working on a construction site with a concrete foundation, surrounding piles of dirt and gravel, against a backdrop of green trees, rolling hills, and a partly cloudy sky.

Construction site with foundation framing, gravel pathway, green trees, and mountains under a partly cloudy blue sky.

Natural stone retaining wall construction in Big Sky MT. Structural earthwork to create level tiers on a steep hillside.

Landscaping rock delivery and placement in Three Forks. Heavy equipment moving materials for a large hardscape project.

A construction site showing a trench with a metal grate and rocks, and a large earth-moving vehicle parked nearby. Big Sky Dirtwork done by Keystone Contracting.

Construction site with a trench filled with gravel and black corrugated pipe for underground utility installation, adjacent to a building with grass and blue sky in the background. Bozeman Excavation Company. Big Sky Excavation Company.

A small Bobcat excavator is digging a large hole in a residential driveway in front of a house, with construction tools and debris scattered nearby.

Construction workers building a stone retaining wall on a dirt road with heavy machinery and a hillside background.

Lawn area with construction work in progress, excavated trench with PVC pipes, construction tools, and equipment including a mini excavator in the background near a white house on a sunny day.

Construction site with excavators and a tarp on the ground, snow-covered landscape, mountains in the background at sunset.

Construction site showing a foundation being built with concrete walls, a yellow compact loader parked on dirt, snow-covered ground, bare trees, and a snowy landscape in the background.

A person standing in a hole with their feet visible, a black septic tank with an open lid, a yellow level tool, and a yellow cap inside the tank, with gravel surrounding the tank.

Snow-covered sidewalk and street in a residential neighborhood at dusk, with lit windows in houses, leafless trees, and streetlights in the distance.

Construction site with freshly tilled soil, tire tracks in the dirt, piles of soil, and a wooded hill in the background under a clear blue sky with sunlight.

A large yellow and black Caterpillar excavator and a smaller yellow and black compactor on a construction site with dirt and soil, in a rural area with hills and sparse trees in the background.

Underground installation of what appears to be a pipeline with blue insulated pipes, buried in a trench with dirt and gravel, in a rural area with snow on the ground and trees in the background.

A small construction vehicle on a cleared dirt site with a large pile of dirt, two buildings with snow-covered roofs, and a forest of trees in the background.

A yellow excavator working on a construction site during winter, with snow on the ground and trees in the background under a clear blue sky.

View from inside a construction vehicle focusing on an excavator bucket digging into dirt, with a residential house, trees, and snow in the background under a clear blue sky.

A construction site on a dirt road in a snowy, rural area with a excavator working, surrounded by houses with snow-covered roofs and a backdrop of pine trees under a clear blue sky.

Construction site with a yellow excavator and a large metal pipe in a trench with grass and leafless trees in the background.

Excavated trench with underground electrical or communication cables laid within, on a hillside with a wire fence on one side and distant hills under a cloudy sky.

A snowy construction site with a white pickup truck and an excavator parked on a muddy, snow-covered road, with snow falling and a cloudy sky in the background.

Construction site with a yellow excavator working on the dirt, with a backdrop of trees and a blue sky. Shadows of a person are cast on the ground.

Construction site with concrete foundation walls, gravel, and dirt mounds, set against hilly landscape with trees and blue sky.

Construction site in a rural landscape with excavators and trucks working on a dirt foundation, surrounded by open fields, trees, and distant mountains under a blue sky.

Construction site in a rural area with excavator, piles of dirt, a pickup truck, and open fields with mountains in the background under a clear blue sky.