State building permit guide
Minnesota building permits — complete guide (2026)
Minnesota has a mandatory statewide building code with one of the deepest frost requirements in the continental US. Minneapolis-St. Paul leads in permit volume. Minnesota's energy code is among the strictest in the nation.
Avg cost: $150–$600
Processing: 1–5 weeks
~28,000 permits/year
87 counties
$150–$600Average permit cost
1–5 weeksProcessing time
~28,000Permits issued/year
Partial — improvingADU-friendly
Minnesota requires licensed contractors for all electrical, plumbing, and HVAC work. Homeowners are not permitted to do their own electrical or plumbing work in Minnesota — this is stricter than most states. The Minnesota State Building Code applies statewide with no local exemptions.
Permit costs by type — Minnesota
| Permit type | Fee range | Processing time | Notes |
|---|---|---|---|
| Electrical | $100–$275 | 1–5 days | NO homeowner electrical exemption in MN |
| Plumbing | $90–$250 | 1–5 days | NO homeowner plumbing exemption in MN |
| HVAC / Mechanical | $100–$275 | 2–6 days | Furnace/boiler replacement high volume |
| Roofing | $125–$350 | 1–4 days | Snow load design critical statewide |
| New Construction | $600–$1,800 | 2–6 weeks | Energy code adds cost vs. other states |
| Room Addition | $350–$950 | 2–5 weeks | Frost depth 42–72 inches depending on area |
| Deck / Patio | $150–$450 | 1–4 weeks | Very deep frost footings required |
| ADU | $350–$900 | 2–5 weeks | Minneapolis adopted ADU ordinance 2020 |
| Pool | $175–$475 | 1–4 weeks | Short season but barrier required |
| Solar | $100–$275 | 1–5 days | Minnesota solar incentives available |
How to get a building permit in Minnesota
1
Contact your municipality's building department
The Minnesota State Building Code applies statewide. Minneapolis (CPED) and St. Paul have online systems. Suburban and outstate MN systems vary.
2
Understand Minnesota's strict trade licensing
Minnesota does not allow homeowner electrical or plumbing work. All electrical and plumbing must be done by state-licensed contractors. This is unique among Midwest states.
3
Submit plans for structural work
Additions and new construction require architectural plans. Minnesota energy code compliance (MnECC) is required.
4
Pay fees
Minnesota fees are moderate. Trade permits are flat-rate. Construction permits based on valuation.
5
Phase inspections
Minneapolis and St. Paul have robust inspection systems. Greater Minnesota jurisdictions may have shared inspectors with longer wait times.
Permit costs by county — top Minnesota counties
Hennepin (Minneapolis) County
$175–$600
2–6 weeks
Ramsey (St. Paul) County
$150–$525
2–5 weeks
Dakota County
$125–$450
1–4 weeks
Anoka County
$125–$425
1–4 weeks
Washington County
$125–$425
1–4 weeks
St. Louis (Duluth) County
$100–$375
1–4 weeks
Frequently asked questions — Minnesota permits
Why can't Minnesota homeowners do their own electrical work?
Minnesota Statute 326B.33 requires licensed electrical contractors for all electrical work. Unlike most US states, there is no homeowner exemption. This is strictly enforced.
What is the frost depth in Minnesota?
Minnesota's frost depth ranges from 42 inches in the Twin Cities to 72 inches in northern Minnesota. This is among the deepest in the continental US and significantly affects foundation and deck costs.
Is Minneapolis ADU-friendly?
Yes. Minneapolis adopted a comprehensive ADU ordinance in 2020 as part of its Minneapolis 2040 plan. ADUs are allowed on all single-family and small multi-family lots citywide.
What is Minnesota's energy code and how does it affect permits?
Minnesota's Energy Conservation Code (MnECC) is one of the strictest in the US. New construction and major renovations must meet high insulation, air sealing, and mechanical efficiency standards. This adds cost but significantly reduces energy bills.
Data sources: US Census Bureau BPS 2024 · Minnesota Minnesota Department of Labor and Industry — Construction Codes and Licensing · Shovels.ai permit aggregator