Septic Installation & Excavation Services in Harvester, MO – House Excavating LLC

Professional Residential & Commercial Septic Systems, Drain Fields, Land Grading, Excavation, and French Drains in Harvester, MO 63303 and All Surrounding Areas

House Excavating LLC is the trusted local expert for septic installation and excavation services in Harvester, St. Charles, St. Peters, Cottleville, O’Fallon, Weldon Spring, and throughout St. Charles County. With over 20 years of experience working in the unique soil conditions and strict county regulations of our area, we deliver clean, code-compliant, long-lasting septic systems and excavation work that homeowners and businesses count on.

Call us today at (636) 213-5003 or (573) 203-1123 for a free on-site evaluation and quote.

Proudly Serving Harvester, Missouri – A Growing St. Charles County Community

Harvester (ZIP 63303) is one of the fastest-growing and most desirable areas in St. Charles County, with a current population of approximately 21,087 residents (Harvester Township, 2025 estimate). Families and businesses love Harvester for its quiet neighborhoods, top-rated schools in the Francis Howell and Fort Zumwalt districts, easy access to Highway 94, I-70, and I-364, and its perfect balance of suburban peace with quick commutes to St. Louis.

As more homes and commercial properties are built on the beautiful rolling land here, proper septic systems and site preparation become absolutely critical. House Excavating LLC lives and works right here in the community – we understand the local clay soils, high water tables in certain spots, and the latest St. Charles County onsite wastewater treatment system (OWTS) regulations better than anyone.

Our Services – Everything You Need Under One Roof

• Residential Septic Installation & Replacement – New conventional, chamber, mound, or advanced treatment systems designed specifically for your lot size and soil percolation.
• Commercial Septic Systems – Engineered systems for restaurants, offices, churches, and multi-family properties that meet or exceed county health department standards.
• Drain Field / Leach Field Installation & Repair – Complete replacement or rejuvenation of failing fields using the latest gravelless chamber technology when needed.
• Land Grading & Site Preparation – Rough & finish grading for new home builds, additions, pole barns, pools, and driveway installations.
• Excavation Services – Basements, ponds, demolition, utility trenching, and boulder walls.
• French Drains & Surface Water Management – Professional yard drainage solutions that stop basement flooding and soggy lawns for good.

Every project is fully permitted, inspected, and 100% compliant with St. Charles County Division of Building and Code Enforcement requirements.

What Our Customers Say – Real Reviews from Harvester & St. Charles County Neighbors

⭐⭐⭐⭐⭐ “House Excavating replaced our 40-year-old septic system in Harvester last spring. They handled everything – permits, soil testing, tank removal, new install, and even regraded the yard perfectly. The crew was professional, on time, and left the place spotless. Best contractor we’ve ever worked with!” – Mike & Sarah T., Harvester, MO 63303

⭐⭐⭐⭐⭐ “We built a new shop on our property in St. Peters and needed a commercial septic system fast. House Excavating had us permitted and operational in under 3 weeks. Their price was fair and the work is flawless. Highly recommend!” – Jason R., St. Peters, MO

⭐⭐⭐⭐⭐ “After heavy rains kept flooding our basement, we called House Excavating for a French drain system. They fixed our drainage issues permanently and the yard looks better than before. True professionals who stand behind their work.” – Jennifer L., St. Charles, MO

⭐⭐⭐⭐⭐ “Needed emergency drain field repair when our system backed up right before Thanksgiving. They came out the same day, diagnosed the problem, and had us back up and running by the weekend. Saved our holiday!” – The Williams Family, O’Fallon, MO

Why Choose House Excavating LLC is the #1 Choice in Harvester & St. Charles County

• Local, family-owned and operated – we live right here in the 63303/63304 area
• Fully licensed, insured, and St. Charles County-permitted installer
• Latest equipment = faster completion and less mess on your property
• Transparent pricing – no hidden fees, ever
• 5-year warranty on all new septic installations
• Emergency service available 7 days a week

Don’t trust your property to fly-by-night contractors or out-of-town companies that don’t understand our local soil and regulations.

Get your septic and excavation work done right the first time.

Call House Excavating LLC today at (636) 213-5003 or (573) 203-1123 or message us for your free estimate.

House Excavating LLC – Digging Excellence in Harvester, St. Charles, St. Peters, O’Fallon, and all of St. Charles County since 2003.