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About Us
Foundations & Septic

Sean Mergenthaler Construction was established in 2019, but Sean has been involved in excavation work in Montana for 20 years, working for various companies. He is committed to delivering dependable, cost-effective, and high-quality excavation and hauling services in the Gallatin Valley and throughout Montana.

Services
Hauling & Transport

Looking for excavation services? We've got you covered! Our services include foundations, grading and digging, site prep, parking prep, road builds and improvement, septic tanks and system install, hauling, and transport.

Gallery
Excavation

Here's a gallery of our company's work. Take a look at our past projects and see the quality of our work for yourself. We take pride in delivering exceptional results and exceeding our clients' expectations. Contact us today to discuss your excavation needs.

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