House Excavating LLC – Trusted Septic Installation & Excavation Experts in Potosi, MO 63660 & Surrounding Areas

Looking for reliable, licensed septic system installation in Potosi, Washington County, or anywhere in the 63660 zip code and nearby communities? House Excavating LLC has been the go-to local contractor for residential and commercial septic installations, drain field replacement, land grading, French drains, and full-service excavation since day one. With decades of combined experience and hundreds of satisfied customers across Potosi, Mineral Point, Cadet, Richwoods, and the greater Washington County area, we deliver quality work that lasts.

Call us today at (636) 213-5003 or (573) 203-1123 for a free estimate!

Why Potosi, MO Homeowners & Businesses Trust House Excavating LLC

Potosi, Missouri (population ≈ 2,538 as of 2025) is a charming rural community known for its rolling hills, historic mining heritage, and tight-knit feel. Located just 70 miles south of St. Louis in beautiful Washington County, Potosi sits on mostly clay-heavy soil with high water tables in many areas – conditions that demand properly designed and professionally installed septic systems. Whether you’re building a new home off Highway 8, adding onto your property near Mark Twain National Forest, or replacing a failing system in the historic downtown district, you need a local company that understands Potosi’s unique soil and terrain.

That’s where House Excavating LLC shines. We live here, work here, and know exactly what the Washington County Health Department and Missouri DNR require for septic permits and inspections.

Our Core Services in Potosi & Surrounding Areas

• New Septic System Installation (conventional, chamber, mound, and alternative systems)
• Septic Tank & Drain Field Replacement / Repair
• Land Clearing & Excavation
• Site Preparation & Land Grading
• French Drains & Surface Water Management
• Commercial Septic Systems for businesses, churches, and multi-family properties
• Perc Testing & Soil Evaluations

Fully licensed • Fully insured • Missouri DNR-compliant designs

What Our Potosi-Area Customers Are Saying

★★★★★ “House Excavating replaced our 40-year-old failing septic system in Cadet. They handled everything – permits, new tank, new drain field, and even re-graded our yard so water flows away from the house now. Fast, clean, and fairly priced. Highly recommend!” – Jennifer R., Cadet, MO

★★★★★ “Needed a new mound system for our new home build outside Potosi. These guys know the local soil better than anyone. Passed inspection the first time and stayed on budget. Couldn’t ask for better service.” – Mike & Sarah T., Potosi, MO 63664

★★★★★ “Commercial job – new septic for our shop on Highway 21. They worked around our hours, finished early, and the French drains they installed stopped our parking lot flooding issues for good. True professionals.” – Travis H., Owner, Mineral Point, MO

★★★★★ “Best excavating company in Washington County, hands down. Graded our 5-acre lot perfectly and installed French drains around the foundation. No more soggy yard after rain!” – Robert L., Richwoods, MO

Proudly Serving Potosi 63660 & All Surrounding Communities

• Potosi
• Cadet
• Mineral Point
• Richwoods
• Caledonia
• Belgrade
• Shirley
• Old Mines
• Blackwell
• Tiff
• Fertile
• Washington County
• Northern Jefferson County
• Southern St. Francois County

Same-day and emergency service available.

Ready for a Worry-Free Septic System in Potosi, MO?

Don’t trust your home or business to just anyone. Choose the local team that’s been digging, grading, and installing septic systems the right way for years.

📞 Call House Excavating LLC now at (636) 213-5003 or (573) 203-1123

📧 Message us for your free, no-obligation quote

🚜 We’re based right here in the 63660 area – when you call, you talk to a local expert, not a call center.

House Excavating LLC – Potosi’s trusted name in septic installation, excavation, and land grading since day one. Licensed | Insured | Local | Reliable