Buying a Home with a Septic System in Andover: A Buyer’s Guide
Our Septic Installation, Inspection & Repair Experts have been working in Andover, MN and the surrounding areas for over 30 years. Because we have been around the block, we would like to share some tips for homeowners that may have just stumbled into a world that involves a septic system.
If you are looking at properties in the spacious, beautiful neighborhoods of Andover, MN, there is a good chance your dream home relies on a private septic system rather than city sewer lines. For first-time rural or suburban homebuyers, the word “septic” can sound intimidating. However, a properly designed and well-maintained septic system is safe, highly efficient, and environmentally friendly. Before you sign on the dotted line, you need to understand exactly what is buried in the backyard.
Here is your comprehensive guide to buying a home with a septic system in Andover, and how Custom Septic Inc. can protect your investment with expert installation and repair services.
1. The Non-Negotiable: Septic Compliance Inspections
In Minnesota, standard home inspections do not cover septic systems. You need a specialized septic compliance inspection performed by a state-licensed inspector. In Anoka County and the surrounding areas, this inspection is typically required before a property transfer can occur.
The inspector will determine if the system is “Compliant” or “Non-Compliant” (often referred to as an Imminent Threat to Public Health or Failing to Protect Groundwater).
- If it passes: You will receive a Certificate of Compliance, generally valid for three years for existing systems.
- If it fails: The system must be repaired or replaced, usually within 10 months (or sooner, depending on the severity). As a buyer, you can negotiate with the seller to have them cover the cost of a Andover septic system installation or hold funds in escrow to complete the replacement after closing.
2. Know What You Are Inheriting
Not all septic systems are the same. Soil type, property size, and water tables in Andover dictate the type of system installed. When reviewing the property, ask the seller for the following:
- System Age: A standard gravity system lasts 20 to 30 years. If the home was built in the 1990s and still has the original tank and drain field, budget for a replacement in the near future.
- System Type: Does the property have a traditional gravity system, a pressure-dosed system, or a mound system? Mound systems are very common in Minnesota areas with high water tables or heavy clay soils.
- Pumping Records: A healthy system should be pumped every 1 to 3 years. Consistent maintenance records are a great indicator that the sellers took care of the property.
3. Look for Red Flags During the Walkthrough
While a licensed professional must do the official inspection, keep your eyes open when touring the property. Warning signs of a failing system include:
- Unusually lush, bright green grass over a specific area of the yard (the drain field).
- Spongy, soggy ground or pooling water in the backyard.
- Foul sewage odors outside or near the lower-level drains.
- Slow-draining sinks or gurgling sounds from the plumbing.
If you spot any of these, call a professional for septic repair services in Andover, MN immediately to assess the damage before you commit to buying.
4. Factor in Future Expansion Plans
A septic system is sized based on the number of bedrooms in the house, not the number of bathrooms or occupants. If you are buying a 3-bedroom home but plan to finish the basement to add a 4th bedroom, the current septic system may not be legally or functionally large enough to handle the expansion. You would need to upgrade the system, which requires a new septic design and installation.
Custom Septic Inc.: Your Local Andover Septic Experts
Whether you are negotiating a home purchase that requires a brand-new drain field or you need a reliable contractor to fix a failing tank, Custom Septic Inc. is your trusted partner in Big Lake, Andover, and the surrounding MN communities.
With decades of experience navigating Minnesota’s strict environmental codes, we provide comprehensive services for homeowners:
- Custom Septic Design: We tailor plans to your property’s exact soil conditions and local Anoka County regulations.
- Septic System Installation: From mounds to gravity systems, we execute flawless installations with minimal disruption to your property.
- Expert Repair Services: We diagnose issues quickly and provide cost-effective repairs to extend the life of your existing system.
Buying a home with a septic system doesn’t have to be a gamble. Armed with the right information and a reliable contractor, you can buy with total confidence. Contact the Professionals at Custom Septic today if you need help with any Septic Related Issues.


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