Bolthole Index

Pennington County, Minnesota

Building permits, zoning and land rules in St. Hilaire, Minnesota

St. Hilaire, Minnesota is subject to the Minnesota State Building Code, but we could not confirm which local official issues residential building permits or administers zoning inside the city.1 New and replacement septic systems require a construction permit and inspection, although the responsible local unit for an address inside St. Hilaire should be confirmed before applying.23 Pennington County is the county context for the city.

At a glance

Building permit
Required for code-regulated work where the code is locally administered; confirm St. Hilaire's issuing official4
Zoning
City zoning rules and administrator could not be confirmed5
Septic
A permit and inspection are required for new and replacement systems23
RV living
City-specific residential RV rules could not be confirmed6
Tiny home
State construction standards apply, while local zoning controls whether and where one is allowed7
Owner-builder
A state contractor-licensing exemption is available for qualifying owners, but it does not waive permits8
Floodplain
City floodplain approval is required for regulated construction or fill9

Who to call

Septic permits

Pennington Soil and Water Conservation District (SSTS Program)

Septic permits for installing, replacing or repairing a system in Pennington County; ask whether the county program is the permitting authority for a St. Hilaire address

218-683-7075

201 Sherwood Ave S, Thief River Falls, MN 56701

Also useful

Pennington County Auditor-Treasurer's Office

Property-tax administration and county administration; a county starting point when the correct local office is unclear

218-683-7000

101 Main Avenue North Thief River Falls, MN 56701

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Off-grid gear

Going off-grid in St. Hilaire means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Do you need a building permit in St. Hilaire, Minnesota?

The Minnesota State Building Code is the statewide construction standard for covered buildings, including tiny houses.107 Where that code is administered, an owner must apply to the building official before starting regulated construction, enlargement, alteration, repair, moving, demolition, occupancy changes, or regulated building-system work.4 We could not confirm the building official or local enforcement arrangement for St. Hilaire. Ask St. Hilaire City Hall to identify the current building official and required application before signing a construction contract. If a permit is issued, the work is subject to inspection and must remain accessible until approved.11

Who issues building permits in St. Hilaire, Minnesota?

We could not confirm an official St. Hilaire building-department page, permit portal, fee schedule, or agreement naming another jurisdiction as the city's building official. Minnesota's process places code review and building-permit issuance with the certified building official where the code is administered.12 Local building departments establish their own fees, which may include plan review and separate building, plumbing, mechanical, septic, sewer, or water charges.13 Start with St. Hilaire City Hall and ask for the current building official, application form, inspection sequence, fee schedule, and certificate-of-occupancy requirements. The Pennington County Auditor-Treasurer's Office handles county administration and can help identify the county contact if the city refers part of the project to Pennington County.14

Does St. Hilaire have zoning for RVs, tiny homes and setbacks?

We could not confirm St. Hilaire's current zoning ordinance, zoning map, district schedule, setbacks, minimum lot size, minimum dwelling size, or RV-occupancy rule. Tiny houses used as dwellings must meet Minnesota residential construction standards, but local zoning decides whether a tiny house or accessory dwelling is allowed on a particular property.715 The statewide recreational-camping-area license applies to qualifying multi-unit camping operations and does not answer whether one household may live in an RV on a St. Hilaire lot.6 Ask the city for a written zoning determination tied to the parcel and proposed use before buying an RV, tiny home, manufactured home, or accessory dwelling for the site.

How do septic permits work inside St. Hilaire?

Minnesota requires a construction permit for every new or replacement subsurface sewage treatment system, and work cannot begin until the applicable local unit approves the application.2 A compliance inspection is also required for new and replacement systems.3 Pennington County requires permits for systems being installed, replaced, or repaired, but we could not confirm whether that county program or a separate city program has jurisdiction inside St. Hilaire.16 Call the Pennington Soil and Water Conservation District and ask it to confirm the permitting authority for the street address before commissioning a design. County-level soil data rates none of Pennington County's mapped soils as free from severe limitations for a conventional drain field, so budget for site evaluation rather than assuming a standard system will work.17

Can you build as an owner-builder in St. Hilaire?

Minnesota exempts a qualifying residential owner-builder from the residential contractor-license requirement when the owner will occupy the property or retain it as a rental.18 The exemption does not apply to construction or improvements for resale or speculation, and it does not waive applicable building permits, inspections, or certificates of occupancy.8 Before acting as your own contractor in St. Hilaire, ask the city's current building official which permit applications, plans, trade permits, inspection calls, and occupancy approvals apply. If the project includes a new or replacement septic system, obtain the SSTS construction permit separately before work begins.2

Building a home in St. Hilaire: the steps in order

  1. Ask St. Hilaire City Hall for the current zoning administrator, building official, zoning map, dimensional standards, permit forms, and fee schedule.
  2. Obtain a parcel-specific zoning answer for the proposed dwelling type, placement, access, and any accessory dwelling. Local zoning determines whether a tiny home or accessory dwelling is allowed.15
  3. Confirm water and sewer availability; if an SSTS is proposed, identify the local permitting unit and secure approval before construction.2
  4. File the building-permit application with plans and the proposed construction valuation required by the building official.19
  5. Schedule required inspections and leave regulated work exposed until approval.11
  6. If the parcel is in a regulated floodplain, obtain the city's floodplain permit before building, placing fill, or installing a culvert.20

What should you check before buying land in St. Hilaire?

Get written answers on the parcel's zoning district, allowed dwelling type, setbacks, lot size, utilities, driveway authority, and floodplain status before closing. We could not confirm St. Hilaire's local standards for those items. A direct driveway connection to a Minnesota state highway requires MnDOT approval before construction or modification.21 A Minnesota water-supply well generally requires a notification and filing fee before construction rather than a general well-construction permit.22 Pennington County's effective property-tax rate is about 1.2%, with a median annual property-tax bill of about $2,300.2324 For floodplain property, a house, fill, culvert, or bridge requires local floodplain approval, and a dwelling cannot be built in the mapped floodway.2526

Watch-outs

  • Do not assume the statewide construction standard identifies St. Hilaire's issuing office; ask City Hall to name the current building official before work starts.4
  • Do not treat the state campground rule as permission for residential RV living on a city lot; St. Hilaire's parcel-specific rule could not be confirmed.6
  • Confirm whether Pennington County or St. Hilaire administers the septic permit for the address before hiring a designer or installer.27

Sources

  1. 2020 Minnesota State Building Codes (St. Hilaire), quoted and re-checked
  2. Minnesota Rules, part 7082.0500, Permit Program for SSTS (St. Hilaire), quoted and re-checked
  3. Minnesota Rules, part 7082.0700, Inspection Program for SSTS (St. Hilaire), quoted and re-checked
  4. Minnesota Administrative Rules, Part 1300.0120 — Permits (Minnesota statewide rule), quoted and re-checked
  5. (2026 county census)
  6. 2025 Minnesota Statutes, Chapter 327 (Minnesota statewide rule), quoted and re-checked
  7. Tiny Houses and the 2020 Minnesota Residential Code (Minnesota statewide rule), quoted and re-checked
  8. revisor.mn.gov (Minnesota statewide rule), quoted and re-checked
  9. Floodplain Regulations (St. Hilaire), quoted and re-checked
  10. Minnesota Department of Labor and Industry (St. Hilaire), quoted and re-checked
  11. 1300.0210 INSPECTIONS (Minnesota statewide rule), quoted and re-checked
  12. Minnesota State Building Code Adoption Guide (Minnesota statewide rule), quoted and re-checked
  13. Minnesota Building Code Adoption Guide (Minnesota statewide rule), quoted and re-checked
  14. Pennington County Auditor-Treasurer's Office (co.pennington.mn.us)
  15. Storage Sheds and the Minnesota State Building Code (Minnesota statewide rule), quoted and re-checked
  16. Pennington Soil and Water Conservation District (SSTS Program) (penningtonswcd.org)
  17. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  18. revisor.mn.gov (St. Hilaire), quoted and re-checked
  19. Code Administration Manual (Minnesota statewide rule), quoted and re-checked
  20. Floodplain Regulations (St. Hilaire), quoted and re-checked
  21. MnDOT Access Management Manual, Chapter 4 (Minnesota statewide rule), quoted and re-checked
  22. 2025 Minnesota Statutes, section 103I.205: Well Construction (Minnesota statewide rule), quoted and re-checked
  23. Effective property tax rate: Bolthole Index county data
  24. Median property tax bill: Bolthole Index county data
  25. Floodplain Regulations (Minnesota statewide rule), quoted and re-checked
  26. Floodplain Regulations (Minnesota statewide rule), quoted and re-checked
  27. Local septic system programs, quoted and re-checked

Written October 9, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for St. Hilaire

Rules another office applies inside St. Hilaire

St. Hilaire does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Owner-builder exemptionAvailable (with conditions)

    Owner licensing exemption for residential construction or improvement in St. Hilaire city.

    • The owner must occupy or intend to occupy the residential real estate for residential purposes, or retain ownership for rental purposes after completion.
    • The exemption does not apply when the owner constructs or improves residential real estate for resale or speculation.
    • An owner constructing or improving more than one property within any 24-month period is presumed to be acting for speculation unless the properties are retained for rental purposes.

    speculation presumption period: 24 months (unless the properties will be retained by the owner for rental purposes)

    “This exemption does not apply to an owner who constructs or improves residential real estate for purposes of resale or speculation.”
  • Building code adoptedAdopted (with conditions)

    Buildings in St. Hilaire city subject to the Minnesota State Building Code.

    • The 2020 Minnesota State Building Code is effective March 31, 2020, except the Minnesota Mechanical Fuel Gas Code, effective April 6, 2020.
    • The DLI page states the code is the minimum construction standard throughout Minnesota but also states it is not enforceable by municipalities unless adopted by local ordinance.
    “The 2020 Minnesota State Building Code is effective March 31, 2020, except for the Minnesota Mechanical Fuel Gas Code, which is effective April 6, 2020. It is the minimum construction standard throughout all of Minnesota. Although it is not enforceable by municipalities unless it is adopted by local ordinance, it creates a level playing field for the construction industry by establishing the Minnesota State Building Code as the standard for the construction of all buildings in the state.”
    One more reviewed finding on this topic
    • Adopted — Construction governed by the Minnesota State Building Code inside St. Hilaire city limits.
      “It is the minimum construction standard throughout all of Minnesota.”
  • InspectionsRequired

    Buildings and structures in St. Hilaire city for which a certificate of occupancy is required under the State Building Code.

    • The building official must inspect the building or structure and find no violations before issuing the certificate of occupancy.
    • The rule contains exceptions allowing a municipality to choose whether to require certificates for U occupancies, certain accessory structures, and used manufactured homes.
    “After the building official inspects a building or structure and finds no violations of the code or other laws that are enforced by the Department of Building Safety, the building official shall issue a certificate of occupancy containing the following:”
  • Certificate of occupancyRequired

    Use or occupancy of buildings and structures inside St. Hilaire city limits, including changes in occupancy classification, subject to the Minnesota State Building Code.

    • No building or structure may be used or occupied, and no change in existing occupancy classification may occur, until the building official issues a certificate of occupancy.
    • A municipality may choose whether to require certificates for U occupancies, certain accessory structures, and used manufactured homes.
    • Existing legal occupancy may continue without change under the rule.
    “No building or structure shall be used or occupied, and no change in the existing occupancy classification of a building, structure, or portion of a building or structure shall be made until the building official has issued a certificate of occupancy for the building or structure under this part.”
  • Septic permitRequired

    New construction or replacement SSTS inside St. Hilaire city, administered by the applicable local unit of government.

    • The local unit of government must review and approve or deny the application before issuing the construction permit.
    • Construction may not begin until the construction permit is granted.
    • Applications must include property and owner information, site evaluation, design report, management plan, and other information requested by the local unit of government.
    “Permits must be required for all new construction and replacement.”
  • Septic inspectionRequired

    Newly installed or replacement SSTS serving property inside St. Hilaire city limits.

    • Inspections determine whether design and installation meet code and protect public health and groundwater.
    • Inspectors must be certified by MPCA and either operate under an SSTS inspection business license or be qualified local-government employees.
    • Existing-system inspections address proper functioning but do not check every listed condition such as system size, horizontal setbacks, estimated longevity, current usage, or past abuse.
    “A compliance inspection for all new construction or replacement must be conducted:”
    One more reviewed finding on this topic
  • Building in a floodplainRequired

    Development and fill in floodplain areas inside St. Hilaire city limits.

    • Development must adhere to the community floodplain management ordinance.
    • The DNR page directs owners of property within a city boundary to contact the city.
    • The page states that building a house, placement of fill, or installing a culvert or bridge would require a floodplain permit.
    “Such projects as building a house, placement of fill, or installing a culvert or bridge would all require a floodplain permit.”
    2 more reviewed findings on this topic
    • Required — Development inside a mapped floodplain in St. Hilaire city.
      “Such projects as building a house, placement of fill, or installing a culvert or bridge would all require a floodplain permit.”
    • Required — Construction and fill in floodplain areas inside St. Hilaire city limits.
      “Construction and fill is generally permitted in portions of the floodplain, provided they adhere to their community’s floodplain management ordinance. Such projects as building a house, placement of fill, or installing a culvert or bridge would all require a floodplain permit.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask St. Hilaire or Pennington County directly.

  • Building permit — Residential building permits inside St. Hilaire city limits.
  • Local zoning — Zoning administered within St. Hilaire city limits.
  • Zoning districts — Published zoning districts and zoning map for St. Hilaire city limits.
  • Minimum dwelling size — Minimum dwelling size inside St. Hilaire city limits.
  • Minimum lot size — Minimum lot size inside St. Hilaire city limits.
18 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Short-term rentals
  • Permit fees
  • Permit process

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that St. Hilaire publishes no rule on the point, not that none exists. Pennington County’s page lists the county offices to call.

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