Serving Arnold, MO & Surrounding Areas

Excavating Services

A small excavator digs near a house, operated by a person in a red shirt. Soil is excavated and piled.

Professional Excavating Services

At Bob Mahoney Plumbing and Excavating, we offer professional excavating services for residential and commercial projects throughout Arnold, MO and surrounding communities.


Whether you need land clearing, foundation excavation, or trenching for utilities, our experienced team has the equipment and expertise to handle projects of any size. We prioritize precision, safety, and efficiency to ensure every job is completed on schedule and within budget.

Why Choose Us?

With years of hands-on experience and a commitment to outstanding service, we provide dependable excavation solutions tailored to your project’s specific needs. Proudly serving Arnold, Festus, Desoto, Barnhart, Fenton, Imperial, and Hillsboro, we focus on delivering quality workmanship and reliable results you can trust.

Complete Excavating Services

Land Clearing & Site Preparation

Proper site preparation is essential for a successful build. We provide thorough land clearing and grading services to create a solid foundation for new construction and development projects.

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Foundation Digging & Structural Excavation

Our team specializes in precise foundation excavation for residential and commercial builds. We work carefully to ensure accurate measurements and stable groundwork for long-term structural integrity.

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Utility Trenching & Installation Prep

We offer professional trenching services for water lines, sewer systems, and other underground utilities. Our safe and efficient approach ensures your utility installations are properly prepared and built to last.

Start Your Excavation Project Today

When you need reliable excavating services in Arnold, MO or the surrounding areas, trust Bob Mahoney Plumbing and Excavating. Contact us today to discuss your project and schedule a consultation.