EXCAVATION CONTRACTOR — BOZEMAN, MT
PROFESSIONAL EXCAVATION AND SITE DEVELOPMENT IN MONTANA
From foundations and site prep to septic systems, grading and land clearing, Hennessy Development delivers reliable earthwork solutions throughout Gallatin County.
Explore Our Services
We provide every service below throughout Bozeman and Gallatin County. Click on one of these to learn more specifics of that service.
Turnkey site preparation and site development from clearing through final grading managed under one team for faster coordinated timelines.
Site Preparation
Precision Excavation for residential and commercial site work with GPS surveying capabilities and experienced local operators.
Excavation
Rough and finish grading for erosion control, drainage, road construction, and lot preparation. Completed with GPS lazer level precision.
Grading
Foundation Excavation
Frost depth compliant foundation digs for custom homes, cabins, and commercial buildings coordinated with your engineer and general contractor.
Utility Trenching
Full service trenching for water, sewer, gas, and electrical trenching built to proper code depth. We locate and protect existing utilities before we dig.
Septic System Installation
Complete septic system design, permitting coordination, and installation built for Montana soil conditions.
Brush removal, tree clearing, and stump grinding to prepare your property for construction with selective clearing practices.
Land Clearing
Foundations, monoslabs, flatwork, and structural concrete built with Montana rated mix designs for freeze thaw durability.
Concrete Work
Explore Our Service Areas
We provide excavation and earthwork services throughout southwest Montana. Click on one of these to for your area.
WHAT OUR CLIENTS SAY
Read what property owners and builders say about working with Hennessy Development.
"William has done a variety of work for me, from clearing brush to excavation. His dedication to excellent work shows in the superb results. Always on task, but never too busy to understand the details of the project."
TODD DRONE
Excavation & Land Clearing
"I selected Hennessy Development for my excavation and foundation job for my log cabin. William and his team were exceptional. Their attention to detail and professionalism exceeded expectations."
KARL MECKLENBURG
Cabin Foundation, Big Sky MT
"Hennessy has done a great job on earthwork and utility projects for us. Great communication and very responsive to changes. They've been awesome to work with."
RYAN KRATKY
Earthwork & Utilities
Why Choose Us
Hennessy Development is built on the kind of work ethic Montana is known for: early mornings, tough conditions, and doing the job right the first time. We bring local knowledge, modern equipment, and unwavering dedication to every site in the Gallatin Valley.
Built on Trust & Precision
Proven track record of delivering exceptional excavation and earthwork results.
QUALITY WORK
HONEST SERVICE
Transparent pricing, honest assessments, and a commitment to doing what is right.
Deep knowledge of Gallatin County soils, frost depths, and building requirements.
LOCAL EXPERTISE
Every grade, every trench, every foundation is executed with precision and care.
ATTENTION TO DETAIL
EXCEPTIONAL COMMUNCATION
We keep you informed at every stage of your project with clear updates and responsive service.
Well-maintained fleet of excavators, loaders, and grading equipment ready for your project.
RELIABLE EQUIPMENT
Featured Projects
Browse our portfolio of completed excavation, foundation, grading, and site development projects across Southwest Montana.
EXPLORE OUR WORK
Foundation Excavation
Custom Home Foundation
Bozeman, MT
Septic System
Septic System Install
Gallatin County, MT
Land Clearing
Land Clearing
Bozeman, MT
Grading
Access Road Grading
Bridger Canyon, MT
Utilities
Utility Excavation
Four Corners, MT
Site Development
Complete Site Development
Big Sky, MT
Contact Hennessy Development today for a free estimate on your excavation, septic, foundation, or grading project in Gallatin County.
READY TO DIG IN?
Whether you're building a custom home, installing a septic system, or clearing land for development, we're here to help. Fill out the form and we'll get back to you within one business day to discuss your project.
Let's Talk About Your Project
Gallatin County, Montana