Thinking about land or a newer home near Rochester? What to know about wells, septic systems, county permits and building in Olmsted County.
Olmsted County covers about 653 square miles, and much of it outside Rochester is farmland, woods and rolling countryside. That gives buyers real choices: a newer home in a growing subdivision, a few acres on the edge of town, or a lot where you can build. It also means a few extra steps that city buyers never think about. Here is what to keep in mind.
Growth you can see
The Census Bureau reports 542 building permits in Olmsted County in 2025, and the county's population rose from 144,248 in 2010 to 162,847 in 2020. Smaller cities nearby have grown even faster in percentage terms: Byron went from 4,914 residents to 6,312 over that decade, and Kasson from 5,931 to 6,851. New neighborhoods on the edges of these towns are a big reason why.
Wells: disclosure rules matter
Many acreage properties rely on a private well. Minnesota law requires sellers to disclose in writing, before signing a purchase agreement, the location and status of each known well, whether in use, not in use or sealed. At closing, a Well Disclosure Certificate is filed with the deed. If an unused well is not returned to use, sealed by a licensed contractor or covered by a maintenance permit before the sale, the buyer becomes responsible for that choice. A seller who knew or should have known about a well and did not disclose it can be liable for the buyer's attorney fees and sealing costs.
Septic systems
Rural homes often use a subsurface sewage treatment system. Olmsted County's Inspections team administers the county septic ordinance under Chapter 3400 of its code, coordinated with Minnesota Rules Chapters 7080 to 7083. The county issues permits for new systems and for repairs, conducts installation inspections and keeps system records. It administers the program directly for Eyota, Marion and Quincy townships and for cities without their own ordinance, while other townships handle their own, so the first question on any rural parcel is which office has jurisdiction.
Radon
Every Minnesota seller must disclose in writing, before a purchase agreement is signed, what they know about radon in the home, including any testing, results and mitigation systems, and must give the buyer the Minnesota Department of Health publication "Radon in Real Estate Transactions." New construction is no exception, so ask your builder about radon-resistant features.
Questions to ask before you buy land
- Which township or city controls zoning and septic permits for this parcel?
- Is there an existing well, and what is its status?
- Are there existing septic records on file with the county?
- How far is the drive to work, school and the nearest trailhead?
Life outside town
Living in the countryside does not mean giving up recreation. The Douglas State Trail runs through farmland from northwest Rochester to Pine Island, Chester Woods Park east of Rochester covers 1,333 acres, and Oxbow Park north of Byron offers about 8 miles of trails.
How David helps
This is where David Olson's background makes a real difference. He is a licensed general contractor and a fourth-generation builder as well as a Realtor and Broker, with more than 20 years of experience and 3,127 homes sold. If you are selling acreage or a newer home, he helps you gather well, septic and radon paperwork early, explains construction quality to buyers in plain terms, and prices the land and the house the way a builder sees them. Call 952-314-9446 before you list.
Sources
- U.S. Census Bureau QuickFacts: Byron, Stewartville, Kasson, Olmsted County
- Minnesota Department of Health: Well Disclosure
- Olmsted County: Subsurface Sewage Treatment Systems
- Minnesota Department of Health: Radon in Real Estate
- Minnesota DNR: Douglas State Trail
- Experience Rochester: Chester Woods Park
- Olmsted County: Trails
This guide is general information, not legal or tax advice. Rules change; confirm details for a specific property with the local office that has authority there.
You don’t have to figure it out alone. David will listen, explain your options and guide you through every step, from pricing to closing. Call or text 952-314-9446.
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