Building permits, zoning and septic rules in Goodhue County, Minnesota

Goodhue County requires a building permit for work covered by the building code in county-administered jurisdictions¹. Goodhue County has adopted the Minnesota State Building Code for buildings and structures within its jurisdiction, and the code covers construction, alteration, moving, demolition, repair, and use of buildings, structures, and building-service equipment⁷. For unincorporated townships, submit the building-permit application to the county after obtaining township zoning approval². Inside incorporated cities, some cities accept building-permit applications while the county reviews plans and performs inspections, and other cities administer the building code themselves; city zoning also replaces county zoning inside municipal limits^2,8. Those city arrangements do not move county-administered septic systems or well permits to the building office: Goodhue County Environmental Health handles those matters^3,4. Qualifying agricultural buildings may be exempt from the State Building Code, but the county-specific land-use conditions remain unconfirmed⁹.

Goodhue County's Building Division is part of Land Use Management at the Government Center, 509 W. 5th St., 1st floor, Red Wing, Minnesota, and is open Monday through Friday from 8:00 a.m. to 4:30 p.m⁷.. Reach the division at 651-385-3114 or buildingpermits@goodhuecountymn.gov⁷. The building official receives building-permit applications, reviews construction documents, issues building permits, conducts inspections, and authorizes use and occupancy⁷. The county publishes separate building-permit paths for unincorporated townships, cities where the county reviews plans and inspects, and cities that administer the building code themselves². Current building-permit fees were not confirmed; Minnesota lets the administering municipality set fees based on the cost of code administration and enforcement¹⁰. Driveway permitting onto county roads runs through Goodhue County Public Works, not the Building Division⁷.

Goodhue County zoning applies outside incorporated municipalities; cities set their own zoning, while township zoning approval comes before a county building permit in the unincorporated-township route^2,8. The county publishes zoning districts and an official zoning map, and each use must be permitted or conditionally approved in the parcel's district⁸. Lot size, setbacks, and building height vary by district, use, or sewer service⁶. In the Shoreland District, total impervious surface is capped at 25% of the lot⁸. An accessory dwelling unit is allowed on the primary home's tax parcel under the county ordinance, either attached, within the home, or within 100 feet; only one is allowed, it cannot be split from the primary parcel, and zoning approval plus building, well, and septic permits still apply⁶.

Goodhue County Environmental Health administers county septic systems under the SSTS ordinance and Minnesota Pollution Control Agency rules, including addresses inside cities when the system remains in the county program³. Reach Environmental Health at the Government Center, 509 W. 5th St., 1st floor, Red Wing, or at 651-385-6132⁴. A compliance inspection is required when a system is installed or replaced, before an SSTS construction variance, before a building permit for a bedroom or bathroom addition, and upon a property sale⁵. After inspection, the Certificate of Compliance or Notice of Noncompliance is due within 30 days⁵. Only about 10.8% of Goodhue County soils lack severe limits for a conventional drain field, so make the site evaluation an early contingency¹¹. Off-grid does not mean sanitation-free: county-regulated sewage must discharge to an approved SSTS or an MPCA-permitted facility, and a building cannot be occupied or used without compliant wastewater treatment¹².

Goodhue County's general rule for long-term RV occupancy on private land could not be confirmed, so ask the Zoning Division about the parcel and intended duration before relying on an RV for housing¹³. In a floodplain district, an RV must meet licensing, highway-ready, utility, and underlying-zoning criteria to qualify for specified exemptions; new or replacement units in floodway or flood-fringe areas face additional elevation, fill, access, and flood-stage rules⁶. Tiny homes used as dwellings must meet the Minnesota Residential Code, but Goodhue County's specific tiny-home siting rule and any general minimum dwelling size could not be confirmed^13,14. A new manufactured home installed for occupancy requires an installation inspection, while local zoning controls placement^13,15. In a county-regulated mobile home park, every mobile home must connect to the park's central water and sanitary sewer systems⁶.

1. Identify whether the parcel is in an unincorporated township or a city, because Goodhue County publishes different permit routes by jurisdiction².
2. Get township zoning approval before seeking a county building permit, and confirm the parcel's district, setbacks, lot-size rule, and any Shoreland or Floodplain overlay^6,7.
3. Send the Building Division the application and project-specific items; a single-family-home package includes a dimensioned site plan showing property lines and well and septic locations, a building certificate, and two full-size drawing sets¹⁶.
4. File the Owner as Contractor form if the property owner is applying as builder; this does not waive permits or code compliance².
5. Coordinate septic and any new-well permit with Environmental Health^3,4.
6. Contact Public Works for driveway permitting onto a county road⁷.
7. Leave permitted work exposed until each required inspection is approved¹⁷.

Start with the zoning map, township approval path, and district standards because minimum lot size, setbacks, and height vary across unincorporated Goodhue County^2,6. If future division matters, an R-1 parcel creating one or more additional dwelling sites must be platted, and a landlocked parcel may need a recorded driveway-access easement accepted by Land Use Management⁶. Check flood mapping before planning a house, fill, culvert, or bridge because those projects require a floodplain permit when located in the regulated floodplain¹⁸. A subdivision crossed by a watercourse, drainageway, channel, or stream must provide a storm-water easement or drainage right-of-way sized for the 1% annual-chance flood event¹⁹. Test septic feasibility early because only about 10.8% of county soils lack severe conventional-drain-field limits¹¹. Confirm water too: Environmental Health issues permits for new wells and sealing abandoned wells⁴.