Polk County, Minnesota Building Permit Guide

Outside the incorporated cities, Polk County requires a land use permit from its Planning and Zoning Department for any improvement to property unless the zoning ordinance exempts it. The office is in the Transfer Station Building at 320 Ingersoll Avenue in Crookston. A land use permit for a new house costs $200 under the fee schedule effective January 1, 2025 ($400 in a floodplain district), and issuing a permit may take one to two weeks. The county has not adopted the State Building Code, so its staff do not inspect construction.

What requires a permit in Polk County?

The Polk County Zoning Ordinance, in its version revised March 18, 2025 and amended by the County Board on April 21, 2026 (Resolution 2026-17), applies countywide except inside incorporated municipalities. The county’s summary is short: permits are required for any improvement to the property unless the ordinance specifically exempts it, and what applies depends on the zoning district (agriculture, village, commercial or industrial) and on the shoreland and floodplain overlay districts.

In the shoreland overlay district, a septic compliance inspection is required before any permit is granted. Floodplain projects are tied to the regulatory flood protection elevation, set 1 foot above the regional flood plus any rise caused by the floodway, and a compliant certificate of elevation earns back part of the fee. A preliminary update of the county’s FEMA flood maps can be viewed on FEMA’s site or the county GIS; the county says final approval is expected but has no date.

What the county decides and what the state holds

Polk County’s own handout is direct: the county has not adopted the State Building Code, including the electrical and plumbing codes, so county staff do not inspect that work. The handout tells homeowners that residential work must still comply with the State Building Code and sends non-residential projects to the Minnesota Department of Labor and Industry (DLI) to find out what applies. Electrical work is inspected by a state electrical inspector.

Polk County building department: who handles permitting

Planning and Zoning, part of Polk County Environmental Services, interprets and enforces the zoning ordinance, issues land use, septic and land alteration permits, and handles variances, conditional and interim uses, rezonings and plats. Staff meet landowners by appointment at the Transfer Station Building, and the county asks visitors to call ahead. Road and right-of-way permits belong to Public Works.

Joint-permitting townships and places that need a county permit

Thirteen townships keep local control through joint permitting with the county: Andover, Bygland, Crookston, Esther, Grand Forks, Huntsville, Liberty, Lowell, Northland, Onstad, Parnell, Rhinehart and Sullivan. In those townships the applicant must meet both the county ordinance and the township’s, the township enforces its own stricter rules, and a township official must sign the application before the county can approve it. The fee schedule also names Gentilly, Euclid, Tabor, Angus, Sherack, Keystone, Mallory and Eldred as communities that need a county permit.

Cities in Polk County

Polk County permit types

Building and septic work share one form, the Land Use/Zoning Permit Application, revised for 2026. Separate forms cover administrative alterations, administrative special uses, conditional and interim use permits, rezonings, variances, land alteration and plats.

Residential permits

The application lists up to four projects with their use, dimensions and height to the peak, and the total valuation of all work excluding land. It asks whether the owner is doing the work; if not, it records the contractor’s state license number, and the form notes that all residential building contractors must be licensed by DLI. The septic designer, installer and compliance inspector are listed with license numbers. A sketch plan drawn to scale shows the lot, structures, fill and the distance to any stream, lake or wetland. Submitting the form consents to inspections by zoning staff during and after construction. Before drawing the plan, the department’s one-page summaries of the agricultural, village, shoreland and floodplain district rules, and its sheet on accessory structures in shoreland, give the setbacks to work to.

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

Commercial and other permits

Commercial and industrial buildings, their accessory buildings and alterations have their own fee rows, and a structural change of use must be allowed in the zoning district. Uses that need review go to the Planning Commission as conditional or interim uses; administrative special uses and administrative alterations are decided by staff. Feedlots are permitted under Section 19 of the ordinance, and plats in shoreland or floodplain cost more than other plats.

What comes before the permit

• Township approval in the 13 joint-permitting townships.
• Septic compliance inspection in the shoreland district, by a licensed inspector from the county’s list.
• State and federal permits. The ordinance requires evidence that any needed state and federal permits were obtained before a permit, variance or conditional use is processed.
• Airport zoning. Inside an incorporated airport zoning district, an airport zoning official signs the application.
• Road access through the Public Works online permit site.

Polk County permit fees

The Polk County Fee Schedule for Zoning Permits was approved by the County Board on December 17, 2024 and took effect January 1, 2025; the county posts it as the 2025 schedule. Floodplain permits carry a higher fee, and $200 of it is refunded when a compliant certificate of elevation is received.

Worked example: a new house with a detached garage over 800 square feet outside the floodplain pays $200 + $100 = $300; a homeowner-installed septic system adds $300. In the floodplain district the same house and garage cost $400 + $300, with $200 of the floodplain charge refundable on a compliant elevation certificate. The schedule also says that if an after-the-fact permit is not issued, the fees are refunded minus a $150 penalty.

Trade permits and who may pull them

Because the county has not adopted the electrical or plumbing codes, it issues no trade permits. Electrical permits for rural Polk County come from DLI, which applies the 2026 National Electrical Code to permits filed on or after August 17, 2026, and the county’s handout tells homeowners doing their own wiring to arrange a state electrical inspection. Plumbers and residential building contractors hold state licenses.

• Septic. A licensed designer must design every system; it can be installed by a licensed installer ($200 permit) or by the homeowner ($300 permit), and either way it is inspected by Polk County zoning staff before it is covered.
• Floor drains. The county handout warns that floor drains and oil separators cannot be tied into a septic drainfield and need a separate holding tank, which counts as a Class V injection well.
• Right of way. Culverts, entrances, irrigation crossings and ditch cleaning in county right of way are applied for on the Public Works online permit site.

How to apply for a Polk County permit

Review, corrections and what causes delay

Permit issuance may take one to two weeks. A missing township signature, an incomplete sketch, or a shoreland property without a valid septic compliance inspection stops the clock, and so does any unresolved violation, because the ordinance bars permits on property in violation until it is corrected. Variances and conditional uses go to the Board of Adjustment or Planning Commission, which meet on the fourth Friday of each month at the Transfer Station building. Once issued, the work must begin within one year and the structure be completed within two years, or the permit becomes void and a new application and fee are needed.

Inspections in Polk County

Zoning staff may inspect during and after construction to verify that the work matches the permit and the zoning ordinance, and an additional site visit costs $50. Every septic system is inspected by Polk County zoning before it may be covered, and commercial systems over 2,500 gallons a day pay inspection costs on top of the permit.

The county does not perform building, electrical or plumbing code inspections. For floodplain buildings, the county refunds $200 of the permit fee once it receives a compliant certificate of elevation. The county also runs a septic fix-up grant for noncompliant systems, paying 60% and up to 80% of installation cost to a maximum of $12,000 for income-qualified owners; the 2026 application deadline was May 8, 2026, with remaining funds offered first come, first served.

Minnesota building code

Polk County enforces its zoning ordinance in the townships but has not adopted the State Building Code. FEMA’s Community Status Book lists the county in the National Flood Insurance Program since August 15, 1983, on a flood map of the same date, with a map update still in preliminary form.

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

Polk County permit search and official resources

For an existing land use or septic permit on a rural parcel, ask Planning and Zoning in Crookston; Board of Adjustment and Planning Commission agendas and approved minutes are posted on the county site.

• Polk County Planning and Zoning
• Land Use/Zoning Permit Application 2026
• Fee schedule for zoning permits (effective January 1, 2025)
• Polk County Zoning Ordinance (revised March 18, 2025)
• 2026 zoning ordinance amendments (adopted April 21, 2026)
• Minnesota construction codes handout
• Land use and zoning applications
• Zoning requirement summaries
• Septic system information
• Septic system grant and loan program
• Board of Adjustment
• Planning Commission
• Polk County online permits (right of way, access, 911 address)
• DLI electrical codes and standards
• FEMA Community Status Book, Minnesota

Polk County permit FAQs

Does Polk County inspect new houses?

No. The county has not adopted the State Building Code, so its staff do not inspect building, electrical or plumbing work; they check zoning and inspect septic systems.

How much is a permit for a new house in rural Polk County?

$200, or $400 in a floodplain district with $200 refunded on a compliant elevation certificate.

Do I need a permit to reshingle or replace a water heater?

No. Siding, shingling, storm windows, painting, insulation, plumbing and electrical repairs and appliance installations are normal maintenance under the ordinance.

My township has its own zoning. Who signs off?

In the 13 joint-permitting townships, the township approves and signs the application first, then the county issues the permit.

Can I install my own septic system?

Yes, with a licensed designer’s design and a $300 homeowner permit; the county inspects it before it is covered.

How long does a permit take and how long is it good for?

Issuance may take one to two weeks; start within a year and finish within two.

When does the Board of Adjustment meet?

On the fourth Friday of each month at the Transfer Station building, 320 Ingersoll Avenue; it hears variances and appeals of staff decisions, and its members are the Planning Commission members from the five commissioner districts.

What if I build first and apply later?

The Board-approved fee schedule sets triple the permit fee and says a $150 penalty can be added; the 2026 application form says every after-the-fact permit pays three times the normal fee plus the $150 penalty.

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