Lyon County, Minnesota Building Permit Guide

Outside the incorporated cities, Lyon County requires a land use permit from its Planning and Zoning office at 1424 East College Drive in Marshall before anyone erects, alters or moves a building. The office also issues septic permits under the county SSTS ordinance, administers shoreland rules and runs the delegated feedlot program. The county’s pages describe no building-code plan review or inspection program, and permit fees are set by County Board resolution rather than posted online.

What requires a permit in Lyon County?

Section 28.1 of the Lyon County Zoning Ordinance sets the basic rule: no one may erect, alter or move any building, or part of one, without first getting a land use permit. The Planning Commission agendas, which list each month’s issued permits, show how broad that is in practice: hay sheds, garages and storage sheds, grain bins, pole sheds, decks and generator slabs all appear.

An after-the-fact permit, for work started without one, costs double the normal fee, and a violation of the ordinance is a misdemeanor, with each day a separate offense.

What the county decides and what the state holds

Lyon County decides land use: zoning districts, setbacks, conditional uses, shoreland and floodplain rules and septic standards. Its land use permit is issued once the Zoning Administrator finds that the building plans and application comply with the ordinance. The county’s pages describe no building-code plan review or inspection program, and the agendas’ “building permits” are these land use permits. Septic design follows Minnesota Rules chapters 7080 to 7083, applied through the county’s own SSTS ordinance (Article 24 of the zoning ordinance), and the shoreland program is the state’s, run locally by the county.

In the “A” Agricultural District of Section 8.5, a new lot must be at least 5 acres, 150 feet wide at the building line and 200 feet deep; lots of record when the ordinance was enacted are excepted, and smaller lots are possible only by clustering under a conditional use permit. Buildings on new building sites stand at least 130 feet from the road right of way, while sites that existed before March 16, 2007 keep the older 100-foot minimum, and a corner lot has a front setback on each road. Side and rear yards are at least 25 feet, but a structure taller than 25 feet must be set back its own height. Impervious surfaces may cover no more than 25 percent of a lot, nothing (structures, buildings or trees) may go within 120 feet of the center of a county or judicial drainage ditch, and an accessory structure must sit on the same property as the use it serves.

Near a city, the “UE” Urban Expansion District of Section 10.6 ties rural development to the neighboring city’s adopted land use plan: the applicant first meets the city about whether annexation is feasible, and the Zoning Administrator sends the city a copy of the application at least ten days before the meeting.

Lyon County building department: who handles permitting

Planning and Zoning, headed by Planning and Zoning Administrator John Biren, handles land use permits, septic systems, shoreland management, feedlots and county ditches, keeps the comprehensive plan, whose 2024–2025 update has its own agendas and minutes, and handles pesticide applicator testing. Under Section 3.1 the zoning ordinance covers all of Lyon County outside the incorporated limits of its cities, so every township is in the county’s zoning jurisdiction.

Cities in Lyon County

Each city runs its own zoning and makes its own building-code decision; the county ordinance stops at city limits. Flood program status in the table is from FEMA’s Community Status Book.

Lyon County permit types

Applications are made on the county’s own forms, available from Planning and Zoning. An application goes to the Zoning Administrator on the county’s forms with a plan drawn to scale showing the lot’s dimensions and the size and location of the building and any accessory buildings.

Residential permits

A house, garage, deck or addition in a township needs the land use permit, issued after the fee is paid and the plans are found to comply. Septic work is a separate permit: inspections are required for all new and replacement systems, and an existing system must be inspected when a building permit adds a bedroom, or when any building permit or variance is sought for a property whose system is in a shoreland area. Septic systems must also comply with chapters 7080 to 7083 when the property is transferred. Section 24.7 makes it unlawful to build, install, modify, replace or operate a system without a county septic permit; the permit covers a new or replacement system and any repair that changes how a system works, its capacity, location or design, but not minor repairs that change none of those. The owner or the owner’s agent obtains it, and the work is done by an appropriately certified or licensed business. Under Section 24.8 every new or replacement system needs a management plan filed with the permit application, setting out operating, monitoring and maintenance tasks and the location of the additional soil treatment area, and revised before the certificate of compliance if the design changes during construction. Owners upgrading a system can borrow through the local watershed districts for up to 10 years at 4%, repaid as a special assessment on property taxes.

Building or remodeling a home here? Alliance handles residential permit applications, so the crew isn't waiting on the counter.

Commercial and other permits

Uses that a district allows only conditionally, such as the rural-oriented towing business heard in July 2026, need a conditional use permit from a public hearing. Lyon County became a delegated feedlot county in April 2009 and administers the program for feedlots under 1,000 animal units, working to a 2026–2027 delegation work plan. Pipelines pay an inspection fee of up to $500 per mile or fraction of a mile.

What comes before the permit

• Variance. The August 18, 2026 meeting heard a variance from the standard 100-foot road right-of-way setback on County Road 73, in the Agriculture district.
• Conditional use. A public hearing before the Planning Commission; the October 13, 2026 agenda carried a new 700-animal-unit feedlot in Lyons Township.
• Feedlot setback. A new feedlot must stand at least 1,320 feet from neighboring dwellings, as the October 2026 agenda notes.
• Floodplain. Work in a mapped flood area falls under the county’s 2022 Floodplain Ordinance; the flood insurance rate maps are in the county GIS map gallery.
• Stormwater. Where a stormwater plan is required, the County Engineer approves it before the zoning permit or subdivision approval.
• Shoreland. Whatever the class of water body, structures stand at least 30 feet from the top of a bluff, 50 feet from an unplatted cemetery and 100 feet from the right of way of a federal, state, county or town road or public street, and nothing but stairways and landings goes in a bluff impact zone.
• Access. A new or modified driveway or entrance on a county road needs a Public Works permit.
• Address. Rural addresses are assigned in the county GIS from the driveway location along the road: send the E-9-1-1 Address Work Request Form to the county’s E9-1-1 Coordinator, under the Rural Address Signing Ordinance. Inside a city, addresses and street names are the city’s job.

Lyon County permit fees

Lyon County does not post a Planning and Zoning fee schedule. Under Sections 28 and 30 of the zoning ordinance, the County Board sets the fees for land use permits, rezonings, variances, amendments and conditional use permits by resolution, and the Zoning Administrator collects them before issuing the permit. Call the office at (507) 532-8207 ext. 3 for the current amounts. The ordinance itself fixes these fee rules:

For septic, feedlot and highway permits, ask Planning and Zoning or Public Works for the current charge when you apply.

Trade permits and who may pull them

The county’s land use permit does not cover wiring. Electrical permits come from the Department of Labor and Industry unless the local government runs its own electrical inspection; DLI applies the 2026 National Electrical Code to permits filed on or after August 17, 2026.

• Septic. Planning and Zoning permits systems designed for flows up to 10,000 gallons a day, and every new and replacement installation must be inspected; the installer must be an appropriately certified or licensed business.
• Builders, electricians and plumbers. Licensed by the state; Lyon County licenses none of them.

How to apply for a Lyon County permit

Review, corrections and what causes delay

A plain land use permit is the Zoning Administrator’s decision, but a variance or conditional use waits for the monthly meeting, held on the second Tuesday at 7 p.m. The 2026 dates are January 13, February 10, March 10, April 14, May 12, June 9, July 14, August 18 (moved from August 11), October 13, November 10 and December 8; the September 8 meeting was not held because there were no agenda items, and changes are posted 3 days ahead. A CUP also carries the applicant’s share of legal, engineering, recording and consultant costs, and a property in shoreland needs a septic inspection with any permit or variance request.

Inspections in Lyon County

The inspections the county describes are septic inspections. Every new and replacement system must be inspected, existing systems are inspected when a bedroom is added under a permit or when any permit or variance is sought in a shoreland area, and a system must be in compliance when a property changes hands. The Planning Commission agendas list each month’s sewer permits next to the land use permits.

A land use permit expires if the use has not begun within 12 months of the grant, unless the Zoning Administrator gives a written administrative extension of up to 12 more months.

Minnesota building code

Lyon County’s permit is a land use permit under its 2015 Zoning Ordinance, with floodplain rules in the 2022 Floodplain Ordinance and a 2017 Buffer Ordinance. FEMA’s Community Status Book lists the county as participating in the National Flood Insurance Program since June 1, 1998, on a flood map dated September 15, 2022, and lists nine of the county’s eleven cities as participants.

Minnesota has one State Building Code that applies statewide and overrides local building codes, but enforcement is local: whether a building permit is needed depends on whether the city, township or county enforces the code there. Electrical permits come from the Department of Labor and Industry unless the local government runs its own electrical inspection. Minnesota rules

Lyon County permit search and official resources

Each month’s Planning Commission agenda lists the land use and sewer permits issued since the last meeting, and past agendas and minutes are posted on the county site. The zoning and land use map and the flood insurance rate maps are linked from the Planning and Zoning page, the flood maps through the county GIS map gallery.

• Lyon County Planning and Zoning
• Planning and Zoning ordinances
• Lyon County Zoning Ordinance, effective April 1, 2015 (PDF)
• Lyon County Floodplain Ordinance, 2022 (PDF)
• Septic systems
• Shoreland management
• Feedlots
• Planning and Zoning agendas and minutes
• Highway permits (driveways, utilities, tile outlets)
• E9-1-1 rural addressing
• DLI electrical code adoption (2026 NEC)
• FEMA Community Status Book, Minnesota

Lyon County permit FAQs

Do I need a permit to build a shed or garage in rural Lyon County?

Yes. Erecting, altering or moving any building outside city limits needs a county land use permit.

How much is a Lyon County land use permit?

The County Board sets the fee by resolution and the county does not post the amounts; call Planning and Zoning. Starting without a permit doubles the fee.

Does Lyon County inspect construction?

Its pages describe no building-code plan review or inspections; what they require is septic inspections.

When does my septic system need an inspection?

For every new or replacement system, when a permit adds a bedroom, and for any permit or variance in a shoreland area; at a sale the system must comply with state rules.

Does the county handle permits in Marshall or Tracy?

No. The zoning ordinance covers only land outside city limits; each city handles its own.

When does the Planning Commission meet?

The second Tuesday of the month at 7 p.m. in the Government Center, 607 West Main Street, Marshall.

How long is a land use permit valid?

The use must begin within 12 months; the Zoning Administrator can grant a written extension of up to 12 months.

Who issues driveway permits on county roads?

Lyon County Public Works, 504 Fairgrounds Road, Marshall, (507) 532-8205.

Simplify Lyon County permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Minnesota. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Lyon County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.