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When a permit is required
Permit triggers and exempt work for Cass County
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.
Note: The reviewed county materials indicate some minor work may be exempt, but they do not publish a complete county-wide exempt-work list.
- 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.
Application process
Application → plan check → issuance → inspection → final
- 01 Start with the correct county permit form.
- 02 Complete all pages and the required site sketch, including setbacks, structures, and elevations.
- 03 Ensure corners of proposed structures are flagged before submittal.
- 04 Submit fees with the application.
- 05 County staff review the packet for completeness and ordinance compliance.
- 06 The permit is issued after Environmental Services Department approval.
Fee schedule
Cass County building permit fees
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
Required inspections
Scheduling and sequence
Typical 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.
Frequently asked
Common questions about unincorporated Cass County permits
01 Do I need a building permit in unincorporated Cass County, MN? ▸
02 How much does a building permit cost in unincorporated Cass County, MN? ▸
03 How do I apply for a building permit in unincorporated Cass County, MN? ▸
Educational reference. Permit rules and fees change — confirm current requirements directly with Cass County Environmental Services before applying. Jaspector is not legal advice.