A dozer clearing brush on a rural parcel beside a compacted crushed-rock building pad, with sandy subsoil in the cut and a culvert set at the driveway entrance.

Barndominium Site Preparation in Minnesota

Site preparation is everything between buying the land and pouring the footings: finding where the house, septic system and well can legally go, then clearing, grading, building the driveway and preparing the pad. In Minnesota, lakes, rivers and wet soils make the first half as important as the second. We prepare barndominium sites across Minnesota, and we start with the rules that decide where the building can sit.

Frame drawings stamped by the manufacturer's engineer
Sized to your county's snow load and frost depth
Start your project

Shoreland, Septic and Well Before Any Dirt Moves

In Minnesota, shoreland is land within 1,000 feet of a lake or 300 feet of a river or stream. Lakes and rivers are classified by size and sensitivity to development, and the Department of Natural Resources says minimum setbacks and lot sizes differ by classification. Local governments administer those shoreland rules through their own ordinances, along with floodplain rules along rivers and streams. If your land is near water, the shoreland ordinance can decide where the house, the driveway and even the grading are allowed, so we check it before a stake goes in the ground.

Off city sewer, the septic system is next. The Minnesota Pollution Control Agency's rules on septic systems are implemented and enforced through local ordinances by counties, cities and townships, and the design and installation must be done by a business licensed for that work. For lots created after 23 January 1996, the state's rules require room for two soil treatment and dispersal areas, a primary and a backup. Compacted soil treats wastewater poorly, so we keep both areas free of traffic, grading and building and plan the house pad and driveway around them.

The well comes last in the plan and first in the ground. A well notification is filed with the Minnesota Department of Health before a new well is drilled, and only a licensed well contractor may drill it; you contract the well contractor directly. The state's isolation distances between a well and a septic system or other hazards set where the well can go, which is one more reason the site plan is drawn before anything moves.

Site Preparation: how the work runs

Four stages, in this order. The sequence matters more than it looks: finding out who enforces the building code on your land, where the septic system and well can go, and getting footings in before the ground freezes is what keeps a Minnesota build on schedule.

1

Rules and site plan

Zoning setbacks, shoreland and floodplain rules, the septic areas and the well location are set out on a site plan with the house, driveway and any shop. This is where we find out whether the building you want fits the land you have.

2

Clearing and access

Trees and brush are cleared from the building area and driveway only, keeping the septic areas untouched. The driveway is built to carry loaded concrete and steel trucks, which in Minnesota means planning around spring thaw.

3

Grading and drainage

The pad is graded so water runs away from the building on every side, with swales and culverts where the land needs them. Snow melt and spring runoff are part of the drainage plan, not an afterthought.

4

Footing excavation

Footings are excavated to the frost depth for your county's zone: five feet in the Zone I counties and three and a half feet in the rest of the state, unless a soils engineer determines otherwise. The pad is prepared for the gas-permeable layer that goes under a new home's slab.

An excavator grading a compacted gravel building pad on a cleared lot, with survey stakes, a drainage swale and an oak and aspen treeline behind.
Land of lakes

Near water, the shoreland ordinance draws the site plan

Minnesota's shoreland program sets minimum setbacks and lot sizes by waterbody class, and local governments administer it through their own ordinances. On a lake or river lot, that ordinance can decide where the house, driveway, septic system and grading are allowed. We read it before we clear a tree.

Where we deliver site preparation

In Minnesota the line that matters is often invisible on a map: whether the city, township or county your land sits in has adopted the State Building Code. Where one has, that office issues the building permit and inspects; where none has, the code still applies but nobody checks it. Zoning can be township or county, a shoreland ordinance governs land near lakes and rivers, and septic systems are permitted under a county, city or township ordinance. The snow load and frost depth the state sets change by county too, heavier and deeper across much of the north than in the south.

Barndominium builders across Minnesota.

Every city and county in Minnesota has its own answer on permits, zoning and septic. The service area pages set out what each one publishes.

View our full service area →
Before you commit

What actually decides the price

Square footage is the number everyone leads with, and it is rarely the one that moves a barndominium budget. These four do.

  • Clearing

    Wooded lots cost more to clear than open fields, and stumps, rock and debris removal add to it. Keeping clearing to the building area and driveway saves money and protects the septic areas.

  • Driveway length and soils

    A long driveway over soft or wet soil needs more base material and culverts to carry trucks through spring thaw. Access is often the biggest site-work line on rural land.

  • Slope and drainage

    Sloping lots need more cut and fill, and sometimes retaining walls or a walkout foundation. Poor drainage needs swales, culverts or drain tile.

  • Soil for the septic system

    The soil decides what kind of septic system the site needs, and the licensed septic designer prices that. Tight clay or a high water table can mean a larger or mound system and more space kept free of grading.

A dozer clearing brush on a rural parcel beside a compacted crushed-rock building pad, with sandy subsoil in the cut and a culvert set at the driveway entrance.

Site Preparation in Minnesota: common questions

8 questions we get asked most often about building in Minnesota. If yours is not on the list, ask it directly.

Start the survey
What does barndominium site preparation include?
The site plan, clearing, the driveway, grading and drainage, and excavation for footings. Septic design and installation are done by businesses licensed for that work, and wells are drilled by licensed well contractors; we plan around both.
Do shoreland rules affect where I can build?
Often, if the land is within 1,000 feet of a lake or 300 feet of a river or stream. Minnesota classifies waterbodies by size and sensitivity, and minimum setbacks and lot sizes differ by class. Your county or city administers the shoreland ordinance, and it can set where the house, septic system and grading go.
Who permits the septic system?
The county, city or township that administers the septic ordinance for your area. Minnesota Pollution Control Agency rules set the standards, and local governments implement and enforce them, sometimes with stricter local requirements.
Why does my lot need two septic areas?
Minnesota's rules require lots created after 23 January 1996 to have room for a minimum of two soil treatment and dispersal areas, so a replacement system has somewhere to go if the first one fails. We keep both areas free of traffic, grading and building so the soil stays usable.
Do you drill the well?
No. Only a licensed well contractor may drill a well in Minnesota, and a well notification is filed with the Minnesota Department of Health before drilling starts. You contract the well contractor directly, and we plan the site around the well location.
How deep are footings in Minnesota?
Minnesota Rules part 1303.1600 sets the minimum footing depth for frost at five feet in the Zone I counties across the north and west and three and a half feet in the rest of the state, unless an engineer competent in soil mechanics determines otherwise for the site.
Can site work be done in winter?
Some of it. Clearing is often easier on frozen ground, but excavation and grading are harder, and concrete needs protection from freezing. Most owners aim to have footings in before freeze-up.
Can you help me evaluate land before I buy it?
Yes. Before you buy, we can look at zoning, shoreland and floodplain rules, septic suitability and access, and tell you whether the barndominium you want is likely to fit.

Sources

Keep reading

The pages that answer the next question this one raises.

Permits & Approvals

The zoning, shoreland, septic and building approvals the site work waits for.

Read it

Are Barndominiums Legal in Minnesota?

Zoning, shoreland rules and the building code, and what each one decides.

Read it

Service Areas

The permitting, zoning and septic offices for each city and county we cover.

Read it

Ready to put site preparation against a real plan? Start there and the rest follows.

Start your build survey

Tell us about the land

Tell us where the parcel is and what you want on it, and we will come back with who enforces the building code there, what the land needs before it can be built on, and a realistic budget range. Starting the survey costs nothing.

Start your project