County Building Permits
Cass County, MN - 2026 Building Permit Guide
How to apply for a building permit in unincorporated Cass County, Minnesota. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
Unincorporated Cass County and county-administered land use, building, shoreland, septic, and related regulated work.
- Department
- Cass County Environmental Services
- Address
- Courthouse Annex, 1st Floor, 303 Minnesota Ave W, Walker, MN 56484
- Phone
- 218-547-7241
Online Permit Portal
Platform: MuniciPAY • Account required: No • Submission: In-person only
Application Process
- Start with the correct county permit form.
- Complete all pages and the required site sketch, including setbacks, structures, and elevations.
- Ensure corners of proposed structures are flagged before submittal.
- Submit fees with the application.
- County staff review the packet for completeness and ordinance compliance.
- The permit is issued after Environmental Services Department approval.
General Requirements
Permits are required for new construction, additions, accessory structures, fences, decks, changes of use, shoreland work, septic-related work, driveway approvals through the road authority, and other regulated land use work.
Required Documents
- Owner or agent signature
- Site sketch
- Setbacks
- Dimensions
- Elevations
- Contact information
- Parcel ID
- Acreage
- Contractor information
- Septic compliance if pressurized plumbing is involved
- Impervious surface worksheet if under 1 acre
- Permit validity
- Construction permits are valid for 2 years.
- Owner-builder
- Owner or authorized agent may sign; if the applicant is not the owner, agent authorization is required.
- Contractor requirements
- Contractor name and phone are required on the form; the reviewed county materials do not state a separate county license checklist.
Fees
- Minimum permit fee
- Residential structures minimum $150 for new home, attached garage, and decks; accessory structures minimum $100; uncovered decks $100; fences $100; E-911 address assignment $100
- Permit fee formula
- Residential structures $0.35 per sq ft; additions $0.45 per sq ft; accessory structures $0.30 per sq ft
Fees change. Verify current amounts at the official fee schedule.
Work That Does NOT Require a Permit
Contact the Cass County Environmental Services to confirm whether your project requires a permit before starting work.
Inspections
How to Schedule
Typical inspection sequence: Site staking or flagging, application review, possible site inspection, approval, and permit issuance.
Erosion control must be in place before construction; violations can trigger stop work and additional administrative fees.
Additional Resources
- Zoning information: View zoning info
- License lookup guide: Minnesota Contractor License Requirements
- Contract template: Minnesota Homeowner-Contractor Agreement
- Minnesota hub: Minnesota Contractor License & Permit Hub
Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Cass County Environmental Services before applying.
Frequently Asked Questions
Cass County Building Permit FAQ
- Do I need a building permit in unincorporated Cass County, MN?
- Permits are required for new construction, additions, accessory structures, fences, decks, changes of use, shoreland work, septic-related work, driveway approvals through the road authority, and other regulated land use work.
- How much does a building permit cost in unincorporated Cass County, MN?
- The minimum permit fee is Residential structures minimum $150 for new home, attached garage, and decks; accessory structures minimum $100; uncovered decks $100; fences $100; E-911 address assignment $100. Fees are calculated as: Residential structures $0.35 per sq ft; additions $0.45 per sq ft; accessory structures $0.30 per sq ft.
- How do I apply for a building permit in unincorporated Cass County, MN?
- 1. Start with the correct county permit form. 2. Complete all pages and the required site sketch, including setbacks, structures, and elevations. 3. Ensure corners of proposed structures are flagged before submittal. 4. Submit fees with the application. 5. County staff review the packet for completeness and ordinance compliance. 6. The permit is issued after Environmental Services Department approval.
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