Cottonwood County, Minnesota Building Permit Guide

In rural Cottonwood County the Environmental Office at 210 10th Street in Windom issues a building setback permit for any new building, addition, deck, moved structure, portable shed or grain bin, certifying that it meets Zoning Ordinance No. 28. The January 2025 application charges $20 to $100 depending on project cost, doubled if work starts before approval, and the permit lasts 24 months or until the project is finished. Septic permits come from the same address, and each city handles its own zoning.

What requires a permit in Cottonwood County?

Section 8 of Ordinance No. 28 requires a building setback permit to erect, expand or relocate any building or part of one, and the permit certifies that the work will comply with the ordinance. The county’s fee page spells the rule out: any new construction, any addition that enlarges a building’s outside dimensions, moving a structure onto a new location, and portable sheds and grain bins.

Several approvals stand apart from the setback permit. Septic systems need a septic permit, uses listed as conditional in a district need a conditional use permit, quarries and hot mix plants an interim use permit, and feedlots their own registration or construction short form; a sign needs its own permit application showing the owner’s or occupant’s consent. Every lot that holds or will hold a structure must contain at least 2.5 acres (108,900 square feet).

What the county decides and what the state holds

The county sets the zoning districts, setbacks, lot sizes, shoreland and floodplain rules and septic standards for the unincorporated county; federal and state land is outside its zoning control. Ordinance No. 28 creates a County Building Inspector post, but the duty it gives is to inspect construction for compliance with the county’s own ordinances, and the county’s pages describe no State Building Code plan review. Electrical permits come from the Department of Labor and Industry, and wells are regulated by the Minnesota Department of Health.

Cottonwood County building department: who handles permitting

The Environmental Office runs planning and zoning, the feedlot program, septic permits and inspections, the agricultural inspector’s weed work, water planning and county ditches. Its Planning and Zoning Technician takes setback permit questions and applications, and the Wetland Conservation Act contact works from the same office. Wetland Conservation Act decisions are brought to the County Board, as on its January 6, 2026 agenda. The Planning Commission seats a member from each of the five commissioner districts plus a county commissioner, and the Board of Adjustment has five district members and a reserve.

Cities in Cottonwood County

Ordinance No. 28 stops at city limits, so each city sets its own zoning and building-code policy. The septic ordinance reaches unsewered land in incorporated areas too, except where a city runs its own county-approved program. Flood-program status is from FEMA’s Community Status Book.

Cottonwood County permit types

The office handles setback permits, conditional and interim use permits, variances, rezonings, subdivision review and survey approval, floodplain and floodway questions, feedlot permits, septic permits and rural 911 address signs. Forms revised in January 2025 cover the setback permit, conditional use and variance applications; the conditional use form states that it is not a building or sewage system permit.

Residential permits

A new house takes a setback permit and a septic permit, and the setback form asks at what stage the septic system is, a question that also applies to house additions and shops with floor drains. Blueprints go with the form, plus erosion control steps when the site is in shoreland. Buildings stand 65 feet back from a public road right-of-way, 100 feet from expressways and four-lane highways, and 10 feet from side and back lines; field windbreaks and wildlife block plantings keep 100 feet from county and township roads.

Shoreland is land within 1,000 feet of a lake, pond or flowage larger than 25 acres, or 300 feet of a river or stream or the landward edge of its floodplain, whichever is greater. On lakes, Section 17 sets unsewered structure setbacks of 150 feet on Natural Environment, 100 feet on Recreational Development and 75 feet on General Development waters, with 20-foot side yards, a 30-foot height limit for non-farm buildings and impervious surfaces capped at 25 percent of the lot. Where a lake lot is sewered the structure setbacks drop to 150, 75 and 50 feet, septic systems keep those same 150, 75 and 50 feet from the water, and an unsewered lake lot needs 2.5 acres.

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

Commercial and other permits

Projects such as a commercial shop, a truck sales lot or a new feedlot can be conditional uses that go before the Planning Commission and County Board; in 2026 the board approved permits for a shop, a turkey feedlot, a commercial truck sales business and a shoreline restoration, each conditioned on erosion control and a waste receptacle during construction. A confinement barn starts with a meeting with the feedlot officer and the Planning and Zoning Technician to sort out feedlot registration, a construction short form and the setback permit. Interim use permits cover quarries, hot mix plants and other temporary uses, and mining permits have a five-year life.

What comes before the permit

• Septic design. A licensed designer and installer, an initial site visit with soil borings and county approval of the plan come before installation.
• Bedrooms and bathrooms. A compliance inspection of the septic system is required before a setback permit for adding a bedroom or bathroom.
• Hearings. Conditional uses, interim uses and rezonings go through a public hearing and a County Board decision; variances go to the Board of Adjustment.
• Driveways. A new driveway onto a county road uses Public Works’ rural driveway request form.
• Wetlands. Draining or filling wetlands falls under the Wetland Conservation Act; call the office before grading low areas.

Cottonwood County permit fees

The County Board approves a “Fees Charged by County Offices” listing each January, most recently on January 6, 2026. The office’s own pages show two sets of figures: the setback application and hearing forms revised in January 2025 carry higher amounts than the older Schedule of Fees page. Both are below. The forms are the newer documents, marked as revised in January 2025, while the Schedule of Fees page and the FAQ carry no date; the board’s 2026 listing itself is not posted with its minutes.

Example under the January 2025 form: a $60,000 machine shed falls in the $25,001–$100,000 band, so the setback permit is $50 if issued before building starts and $100 if construction began first. Payments to Public Works by card carry a 2.4 percent fee, with a $1.50 minimum.

Trade permits and who may pull them

Cottonwood County’s permit pages include no electrical, plumbing or mechanical permits. Electrical permits are filed with the Department of Labor and Industry, whose 2026 National Electrical Code applies to permits filed on or after August 17, 2026, and contractors, electricians and plumbers hold state licenses rather than county ones.

• Septic contractors. Both a licensed designer and a licensed installer are needed for a new system; the office posts a list of licensed contractors registered with the county.
• Well drillers. The office keeps a well contractor list, and the Minnesota Department of Health, not the county, permits and regulates wells.
• Feedlot operators. The county feedlot officer permits and inspects feedlots, and a confinement site may also need a feedlot registration.

How to apply for a Cottonwood County permit

Review, corrections and what causes delay

The office reviews a plain setback permit when the application is brought in with its plans. Projects needing a conditional use, interim use, variance or rezoning wait for a public hearing; Planning Commission and Board of Adjustment meetings since August 26, 2021 are recorded on the Environmental Office’s YouTube channel. A septic design must be reviewed and approved by the county inspector before installation, and adding a bedroom or bathroom waits on a septic compliance inspection. Appeals of a staff decision must be filed within 15 days.

Inspections in Cottonwood County

For a new septic system the county septic inspector, designer, installer and owner meet for an initial soil inspection; the inspector then checks the tank once it is set but before it is covered, and the drainfield the same way. The owner or agent must notify the office two calendar days before permitted septic work. A new system’s certificate of compliance is valid for five years, and an existing system’s for three.

A compliance inspection of an existing system is also triggered by a property sale when the owner has no valid certificate, by a change or expansion of use, and by any permit or variance on a shoreland lot with a system that does not meet the ordinance. Zoning staff may stop work that violates the ordinance, and work stays stopped until the problem is fixed. Electrical installations are inspected under the state permit.

Minnesota building code

Cottonwood County administers Zoning Ordinance No. 28, the SSTS Ordinance No. 38, the mining Ordinance No. 36 and the buffer Ordinance No. 42; the shoreland section of Ordinance No. 28 was adopted October 3, 2017 and took effect November 1, 2017. FEMA’s Community Status Book lists the county as participating in the National Flood Insurance Program since January 2, 1981, with a current flood map dated September 24, 2021. County Board minutes record a short data center discussion on March 3, 2026 and, on July 21, 2026, a report on a July 20 public meeting in Mountain Lake about a proposed data center; no county moratorium appears in the minutes.

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

Cottonwood County permit search and official resources

The Environmental Office holds the county’s setback, septic and feedlot permit records; ask its staff for a copy of an earlier permit or a septic certificate. County Board agendas and minutes, including conditional use decisions, are posted on the county site.

• Cottonwood County planning and zoning
• Setback permit information
• Planning and zoning schedule of fees
• Planning applications and forms
• Setback permit application (January 2025)
• Conditional use application (January 2025)
• Planning and zoning FAQ
• County ordinances
• Ordinance No. 28, Section 8: building setback permits
• Ordinance No. 28, Section 17: shoreland regulations
• SSTS Ordinance No. 38
• County Board agendas and minutes
• Public Works permits and forms
• Minnesota Department of Health well programs
• State electrical permits (DLI)
• FEMA Community Status Book, Minnesota

Cottonwood County permit FAQs

Do I need a permit to build a deck?

Yes. The county requires a setback permit for decks as well as for new construction and home additions.

Do I need a permit to re-roof or replace windows?

No. Shingles, siding and windows need no setback permit if the building’s dimensions do not change.

Does a fence need a permit?

No. The ordinance has no setback requirement that calls for a setback permit for a fence.

How much is a setback permit?

The January 2025 application lists $20 to $100 by project cost; the older fee page lists $10 to $50. Starting work before approval doubles the fee.

Where do I apply for a septic permit?

At the office at 210 10th Street in Windom, through a licensed designer whose plan the county septic inspector approves.

Is a septic inspection needed when I sell?

Yes, unless the system has a valid certificate of compliance; a non-compliant system must be replaced within 10 months of the transfer.

How long is a setback permit good for?

24 months or until the building project is finished; a variance stays with the land.

Simplify Cottonwood 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 Cottonwood County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.