GK Excavating is a mid-sized excavation company fully bonded and insured that operates within residential, commercial, industrial and municipal endeavors. From large-scale site developments to small backyard landscaping projects GK Excavating is comprised of skilled machine operators whose care and attention to detail is well established.

GK Excavating offers a wide array of services and capabilities such as: driveway and road construction and reconstruction, piping installations, commercial and private sewer and water installations and replacement, design and installation of standard and engineered septic systems, foundations and underground utilities. Additionally, GK Excavating can provide dump truck service, equipment hauling, excavator and dozer service, land clearing, fuel reduction, delivery and installation of topsoil and gravel. When you need earthwork GK Excavating specializes in retaining walls, rockwork, pound construction and snow removal in the winter.

GK Excavating’s strength lies in their attention to detail and the emphasis they place on good communication with the client. Greg Kulkowsky, the owner of GK Excavating, is committed to not just meeting, but exceeding the customer/clients expectations by keeping the job on time and on budget. GK Excavating has the depth, experience, and capabilities of a large company, yet the expertise and flexibility of a medium-sized organization able to tackle the most challenging projects.

Excavation services

Foundations:  full basement, crawl space, slab and footings. Utility Lines: City water, sewer: sanitary or storm, septic, electrical, phone and cable.  Level or steep terrain, rocky or loose soils, we have the expertise to get the job done.

Site development: Residential and Commercial

Services include land clearing, road building, foundation excavation, utility installation, parking lots, storm water detention ponds, and grading for drainage. We work with many general contractors across the valley and understand the importance of keeping on budget and to a schedule.

Roads and Driveways

Route finding, tree and brush removal, cutting the rough grade, culvert installation, graveling, final grading and compaction.  Road maintenance includes graveling, grading, culvert cleaning, and re ditching.  Got potholes?  Call us for a quote.

Retaining walls types

Natural stone, concrete, masonry block, and gabion.  We consider design, craftsmanship, and quality materials are the fundamentals of a superior retaining wall.

Septic systems

Licensed, certified designer and installer.  Types I, II, and III.  An engineered system meets the demands imposed by a smaller parcel size, by soil or groundwater conditions, or by other factors that a conventional system or a basic sand mound system can’t adequately address. We work closely with several local engineering firms should this need arise.

Land clearing / Thinning

Site clearing, view corridors, fire reduction, and logging. Let us improve safety, forest heath, and improve views.


Grading for drainage, swales, privacy berms, black dirt, retaining walls, and focal point: stone, boulders, and trees. 

Snow Removal

Plow truck, loader, skid steer, and dump trucks. We service residential and commercial accounts in the North Flathead Valley area. Snow can be piled on site or hauled away. Call us today for an estimate.


We have a single axle dump truck which fits the tight spots and a tri axle dump truck to efficiently move large quantities of material. Our trucks can deliver sand, gravel, drain rock, ornamental stone, black dirt, loam, mulch, compost, rip rap, landscape materials, and boulders.  Our large trailer can haul equipment up to 18 tons and our small up to 7 tons.