A rugged dark-rock shoreline on a vast cold lake in the Arrowhead, with dense spruce, fir and birch forest climbing the ridge above.
St. Louis County, Minnesota Duluth & the Arrowhead

Barndominium Builders in St. Louis County, Minnesota

Barndominium builders near St. Louis County work across a county that runs from the townships ringing Duluth to Iron Range towns, lake country around Ely and Tower, and forest land running up to the border lakes. Most buyers here want acreage: a home and a heated shop on 5, 10 or 40 acres, often with a lake or river nearby. We supply barndominium kits for owners who build their own, draw custom plans, and deliver turnkey homes with site preparation and permit work included. What changes from parcel to parcel is who regulates it. A handful of cities enforce the State Building Code with their own inspectors; across most townships the code still sets the standard but no local office inspects the work. Either way, the county's Planning and Zoning Department (or a township with its own ordinance) issues the land use permit, sets the lot size and shoreland setbacks, and permits the septic system. Tell us the township and parcel number through the survey and we will map out the permits before any drawings start.

St. Louis County at a glance

County
St. Louis County
Building permit
County or township, by location
Land use
More than one zoning authority
Wastewater
Septic (SSTS) via the county
Frost depth / snow load (state rule)
5 feet / 60 psf

Pole Barn Homes near St. Louis County

A pole barn home sets its frame on posts and trusses (the engineering term is post-frame), which often suits a simple, wide layout with a shop bay under the same roof. Whether it fits your parcel comes down to the zoning and the site, set out below.

Permits, Zoning & Septic in St. Louis County

Who issues the permit, who zones the land and who handles septic can change at a city limit or a county line. Here is who decides each part in St. Louis County, taken from the office or document that publishes it. Rules change, so check them again against your parcel before anything is drawn.

Who issues the building permit County or township, by location

City building officials where adopted; St. Louis County Planning & Zoning for land use permits elsewhere

In St. Louis County, 11 of the 187 cities and townships in DLI's directory have adopted the State Building Code, including Duluth, Hibbing, Ely, Chisholm and Hermantown; those cities permit separately. The county itself says it does not administer the State Building Code, but it requires a land use permit for new construction, including a foundation, in county-administered townships. The code still applies everywhere.

Source: Apply for a Land Use Permit, St. Louis County (stlouiscountymn.gov)

Who decides the land use More than one zoning authority

Land Use Division, St. Louis County Planning & Zoning (or the township, where it zones)

The county's Land Use Division administers Zoning Ordinance 62 and Subdivision Ordinance 60 in county-administered areas. Districts include Forest Agricultural Management (FAM), Multiple Use, Shoreland Multiple Use and Residential. A township that files its own zoning ordinance, at least as restrictive, replaces Ordinance 62 there, though its shoreland rules must stay consistent with the county's.

Source: Land Use, St. Louis County Planning & Zoning (stlouiscountymn.gov)

Sewer or septic Septic (SSTS): county

Onsite Wastewater Division, St. Louis County Planning & Zoning

The county's Onsite Wastewater Division runs the SSTS (septic) program under Ordinance 61, with standards the County Board last amended on March 28, 2023, and takes septic permit applications through the county's online portal. MPCA-licensed professionals design and install the system.

Source: Onsite Wastewater (Septic Systems), St. Louis County (stlouiscountymn.gov)

Is the State Building Code enforced here?

In St. Louis County, 11 of the 187 cities and townships in DLI's State Building Code Jurisdiction Directory have adopted the State Building Code, including Biwabik, Buhl, Chisholm, Duluth, Ely, Hermantown; elsewhere the county's zoning, shoreland and septic rules still apply.

Source: State Building Code Jurisdiction Directory (Local Code Lookup), Minnesota Department of Labor and Industry (secure.doli.state.mn.us), read 27 September 2026. Check it again for your parcel, then call that office.

Design figures the state sets for St. Louis County
Frost footing depth
5 feet (frost Zone I), unless an engineer competent in soil mechanics determines otherwise.

Source: Minn. R. 1303.1600, Footing Depth for Frost Protection (revisor.mn.gov)

Ground snow load
60 pounds per square foot of ground snow load, the starting point for the structure's snow design.

Source: Minn. R. 1303.1700, Ground Snow Load (revisor.mn.gov)

Lot sizes come from a numbered standard
Zoning Ordinance 62 pairs every district on the zoning map with a numbered dimensional standard. Minimum lot area runs from 35 acres (standards 1 and 1a) through 17, 9 and 4.5 acres down to 2.5, 2 and 1 acre, so two FAM parcels can carry very different minimums (Ordinance 62, amended May 5, 2026).

Source: Zoning Ordinance of St. Louis County, Minnesota (Ordinance Number 62) (stlouiscountymn.gov)

Township zoning
Section 11.6 of Ordinance 62 says the county ordinance does not apply in a town that has adopted and filed with the county recorder a zoning ordinance consistent with and as restrictive as the county's; towns that run shoreland rules must match the county's shoreland standards.

Source: Zoning Ordinance of St. Louis County, Minnesota (Ordinance Number 62) (stlouiscountymn.gov)

Building on land near St. Louis County

Rural land in St. Louis County is mostly forest, wetland and lakeshore, with large blocks in public or corporate ownership. Before you buy, look up the parcel's district and its numbered lot standard, check whether it falls within 1,000 feet of a lake or 300 feet of a river, and ask whether it fronts a maintained road. Bedrock, peat and a high water table can limit where a septic system fits, which in turn fixes where the house can go. For the cities, see the Duluth and Hibbing pages; for the county to the south, see Carlton County.

Other places in this part of Minnesota

Have land in or near St. Louis County? Tell us about the parcel and what you want on it, and we will check it against the local rules before anything is drawn.

Building in St. Louis County: questions

Start the survey
How much does it cost to build a barndominium in St. Louis County?
It turns on size, finish and the site. On northern acreage, the driveway, clearing, a well, a septic system sized for the soils and power extension can add up quickly before the shell goes up. Our barndominium cost guide gives sourced per-square-foot ranges, and the survey lets us look at your parcel.
Do I need a building permit for a barndominium in St. Louis County?
It depends on where the land is. In a city that enforces the State Building Code, such as Duluth, Hibbing or Virginia, Minnesota, the city issues a building permit. In most townships nobody issues one, but the county requires a land use permit before construction, including the foundation, and a septic permit. State electrical and plumbing rules apply everywhere. We build to the Minnesota Residential Code on every site and handle the permitting.
Does my township or the county handle zoning?
Usually the county, under Ordinance 62, but a township that has filed its own zoning ordinance with the county recorder administers zoning itself, and it must keep shoreland rules consistent with the county's. The county's land use page links an administration-of-zoning list; check it, then ask that office about your parcel's district and lot standard before you design a pole barn home or shop.

Other places near St. Louis County

Nearby places with their own pages. Across a city limit or a county line the permit office, the zoning and the septic rules can change, so each is covered separately.

Building in St. Louis County?

Start with the survey. Tell us where the land is and what you want on it, and we will come back with which offices decide it, what the zoning allows, and a plan to fit.