Bolthole Index

Lincoln County, Montana

Building permits, zoning and land rules in Lincoln County, Montana

74Index Score / 100
#7 of 56 in Montana

Unincorporated Lincoln County, Montana does not require a building permit for a single-family home because state law exempts qualifying residences and the county has no certified local building-code program12. County zoning is limited rather than countywide: the identified unincorporated districts cover the airports and Kootenai Business Park near Libby34. A local septic permit is still required through Lincoln County Environmental Health56.

At a glance

Building permit
Not required for a qualifying single-family home in unincorporated Lincoln County; separate trade permits may apply12
Zoning
Limited to the identified airport and Kootenai Business Park districts in unincorporated Lincoln County34
Septic permit
Required through Lincoln County Health Department Environmental Health56
Owner-builder
An owner may work on their own property, subject to the resale limitation and all separate permits78
Tiny home
A qualifying factory-built tiny house may be a single-family dwelling on a permanent foundation; placement parks have county standards910
RV living
Rules for one RV on ordinary private land could not be confirmed; multiple-space permanent RV parks are regulated11
Floodplain permit
Required before development in a Special Flood Hazard Area12
County-road driveway
A permit is required for a new or modified approach onto a county road13

Who to call

Planning & zoning

Lincoln County Planning Department

Planning contact for subdivision, zoning, floodplain, lakeshore and buildings-for-lease-or-rent questions

(406) 283-2309

[email protected]

512 California Ave, Libby, MT 59923

Online permits →

Septic permits

Lincoln County Health Department, Environmental Health

Local onsite wastewater permits and site-evaluation questions

283-2442

Online permits →

Roads & driveways

Lincoln County Road Department

County-road approach questions; separate Libby, Troy and Eureka shops are listed

293-4557

Contact details are copied from each office’s official page and were checked against it on September 28, 2026.

Do you need a building permit in Lincoln County, Montana?

A qualifying single-family home in unincorporated Lincoln County does not need a building permit12. Montana exempts residential buildings containing fewer than five dwelling units in areas under the state program, except buildings serving transient guests, and Libby and Troy are certified only within their city limits1415. The exemption does not erase every approval: electrical, plumbing or mechanical permits may still apply, and septic, floodplain and road-access permits are separate261213. Lincoln County's published materials do not confirm whether an exempt home receives a building inspection or certificate of occupancy, so ask the Planning Department before relying on either document for financing or insurance16.

Who issues permits in Lincoln County, Montana?

Lincoln County has no county building department issuing permits for qualifying single-family homes in unincorporated areas115. Start with the Lincoln County Planning Department for parcel-specific zoning, subdivision and floodplain questions; its office is at 512 California Ave in Libby, with forms available through its website1617. Contact Lincoln County Health Department Environmental Health for the local wastewater permit and site evaluation518. Contact the Lincoln County Road Department before creating or changing an approach onto a county road1913. A new or changed approach onto a state highway instead goes through the appropriate Montana Department of Transportation district office20.

Does Lincoln County, Montana have zoning?

Lincoln County has limited zoning, not a general countywide zoning ordinance34. The county's Growth Policy identifies airport zoning and the Kootenai Business Park near Libby as the zoning regulations in unincorporated areas, while Libby has separate municipal zoning2122. The published county material does not confirm a general minimum dwelling size, minimum residential lot size, lot-coverage limit, building-height limit or setback for ordinary unincorporated parcels; the Planning Department should confirm the rules for the parcel and any special district16. Subdivision rules still apply when land is divided, and floodplain, sanitation and access approvals can apply even where no general zoning district covers the parcel2312613.

How do septic permits work in Lincoln County, Montana?

Lincoln County Environmental Health requires a local permit before a non-public onsite wastewater system is installed56. The system location, type and size depend on a Certificate of Subdivision Approval or a site evaluation by a qualified evaluator6. A Certificate of Subdivision Approval does not replace the local drainfield permit24. Only 4.1% of Lincoln County soils are rated without severe limitations for a conventional septic drain field, so obtaining the site evaluation before fixing the house location or buying the parcel can prevent an expensive surprise25. Large public systems serving more than 24 people for more than 60 days a year or having more than 14 connections fall under Montana DEQ's primary responsibility26.

Can you live in an RV or tiny home in Lincoln County, Montana?

Lincoln County's published rules do not confirm whether one RV may be occupied temporarily or year-round on ordinary private land outside a placement park; ask the Planning Department before using an RV as a dwelling16. Multiple-space permanent RV placement parks outside municipal boundaries are regulated, including water, wastewater, access and floodplain compliance11. A qualifying factory-built tiny house may be used as a single-family dwelling when it has 400 square feet or less excluding lofts and is mounted on a permanent foundation, although separate local land-use, septic and floodplain rules still apply9. Multiple-space tiny-home placement parks also follow county standards, including 25-foot separation from a property line abutting a public road, 15-foot separation from other development property lines and 20-foot separation between units and attached structures10.

What are the steps to build a home in Lincoln County?

  1. Ask the Planning Department whether the parcel is inside an airport or business-park zoning district, a flood hazard area or a subdivision review area16412.
  1. Obtain the Environmental Health site evaluation and septic permit before setting the house footprint56.
  1. Apply for a floodplain permit before work if the parcel lies in a Special Flood Hazard Area12.
  1. Obtain a county approach permit for a new or modified driveway onto a county road, or contact Montana DOT for access to a state highway1320.
  1. Confirm separate trade permits, then proceed under the single-family building-permit exemption if the site is in unincorporated Lincoln County2.

What should you check before buying land in Lincoln County?

Test the proposed septic area first because only 4.1% of county soils are rated without severe limitations for a conventional drain field25. Review slope and clearing costs because 14.3% of Lincoln County land is at a slope of 15% or less and 92% is wooded2728. Confirm legal access and whether the driveway meets county-road or state-highway requirements1320. Check the flood map before choosing a building site because development in a Special Flood Hazard Area needs a county permit, and allowed construction must place the lowest floor 2 feet above the 100-year floodplain elevation12. For a land division, verify whether county subdivision review applies; an agricultural exemption restricts the new parcel to agricultural production or open space and bars residential, commercial and industrial buildings until the covenant is revoked and review occurs2329.

Watch-outs

  • A single-family building-permit exemption does not eliminate separate trade, septic, floodplain or access approvals261213.
  • Lincoln County's RV and tiny-home placement-park standards govern multiple-space developments; they do not answer whether one RV may be occupied on ordinary private land11.
  • The identified unincorporated zoning covers the airports and Kootenai Business Park, while municipal rules are separate; ask Planning to identify every rule attached to the parcel42216.

Sources

  1. Montana DLI - Certified City, County and Town Programs (2026 county census)
  2. Frequently Asked Questions, quoted and re-checked
  3. Lincoln County Growth Policy, 2019 Update (2026 county census)
  4. Lincoln County Growth Policy, 2019 Update, quoted and re-checked
  5. Lincoln County Health Department Environmental Health - Septic Application (2026 county census)
  6. Septic Permitting, quoted and re-checked
  7. Montana DLI Building Permit FAQ (2026 county census)
  8. MCA — Chapter 45: Construction Contractors, quoted and re-checked
  9. 2024 Building Code Amendments, quoted and re-checked
  10. Lincoln County Buildings for Lease or Rent Regulations, quoted and re-checked
  11. Lincoln County Buildings for Lease or Rent Regulations, quoted and re-checked
  12. Building in a Floodplain, quoted and re-checked
  13. Lincoln County Approach Permit Applications & Guidelines, quoted and re-checked
  14. Building Permits (Montana statewide rule), quoted and re-checked
  15. Certified City, County and Town Programs, quoted and re-checked
  16. Lincoln County Planning Department (lincolncountymt.us)
  17. Planning Forms, quoted and re-checked
  18. Lincoln County Health Department, Environmental Health (lincolncountymt.us)
  19. Lincoln County Road Department (lincolncountymt.us)
  20. Approach Manual for Landowners and Developers (Montana statewide rule), quoted and re-checked
  21. Lincoln County Growth Policy, 2019 Update, quoted and re-checked
  22. Lincoln County Growth Policy, 2019 Update, quoted and re-checked
  23. Lincoln County Subdivision Regulations, quoted and re-checked
  24. Engineering Infrastructure & Subdivisions (Montana statewide rule), quoted and re-checked
  25. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  26. Septic Permitting, quoted and re-checked
  27. Share of land at 15% slope or less: Bolthole Index county data
  28. Wooded share of land: Bolthole Index county data
  29. Exempt Plat Review, quoted and re-checked

Written September 28, 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.

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County locator

Lincoln County in Montana

74
County map
Lincoln County highlighted among the Montana counties · colored by Index score

How Lincoln County scores

Seclusion86100% ev.
Self-Sufficiency46100% ev.
Admin Boringness72100% ev.
Durability43100% ev.
Property Autonomy83100% ev.
Carry Cost73100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$435kTypical home
0.6%Property tax
$4,690Land / acre
32"Annual rain
11.7% of yrsSevere drought
1.1 / yr (+1.1)Mid-century 100°F days
19.9 daysMid-century dry spell
1.45" (+5.2%)Mid-century 1-day rain
1.44×Wildfire change factor
100%Forward climate coverage
$1,785Home insurance / yr
2.5% / yrInsurance growth
1.15%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
109,496People within 2 hr
3,776Radius comparison (15 mi)
6.1People / sq mi
77%Federal land
14.3%Land at 15% slope or less
4.1%Septic soil without severe limits
86,930 acWorkable land screen
92%Wooded land
46.9 tonsBiomass / forest ac
42°FAvg temp

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Answers from the rulebook for Lincoln County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Lincoln County rules

  • Building code adoptedNot adopted (with conditions)

    Building-code administration in unincorporated Lincoln County outside certified city limits.

    • The Montana Building Codes Bureau has jurisdiction in areas outside the certified local-government building-code jurisdictions.
    • The state source lists Libby and Troy as certified city jurisdictions, each limited to city limits; this claim does not address building-code adoption inside those cities.
    “All other areas are under the jurisdiction of the State Building Codes Bureau”
  • County-wide zoningPresent (with conditions)

    Zoning in unincorporated areas of Lincoln County.

    • The Growth Policy identifies the applicable unincorporated-area zoning as airport zoning and zoning for the Kootenai Business Park in Libby; it does not describe general zoning throughout all unincorporated land.
    • The City of Libby has municipal zoning, which is separately administered from county zoning.
    “The only zoning regulations that exist within unincorporated areas of the County govern the airports and the Kootenai Business Park in Libby.”
  • Local zoningVaries (with conditions)

    Zoning across Lincoln County, aggregating the limited county zoning in unincorporated areas and municipal zoning within Libby.

    • In unincorporated areas, the identified county zoning governs airports and the Kootenai Business Park in Libby.
    • The source identifies the City of Libby as the only community with municipal zoning; municipal zoning is not represented as a county-administered ordinance.
    “The only zoning regulations that exist within unincorporated areas of the County govern the airports and the Kootenai Business Park in Libby. The City of Libby is the only community with municipal zoning.”
  • Zoning districtsPartial

    Unincorporated Lincoln County zoning information published in the County Growth Policy; this is not a complete countywide zoning map or ordinance.

    • The source states that only airport and Kootenai Business Park zoning regulations existed in unincorporated areas at the time of the 2019 Growth Policy update.
    • The source states that the City of Libby is the only community with municipal zoning; incorporated municipalities may therefore have separate rules.
    • The source does not establish that no later district-specific zoning was adopted.
    “The only zoning regulations that exist within unincorporated areas of the County govern the airports and the Kootenai Business Park in Libby.”
    One more reviewed finding on this topic
    • Partial — Unincorporated areas of Lincoln County outside incorporated municipalities; the official county growth policy identifies limited zoning regulation for airports and the Kootenai Business Park in Libby, rather than countywide zoning.
      “The only zoning regulations that exist within unincorporated areas of the County govern the airports and the Kootenai Business Park in Libby. The City of Libby is the only community with municipal zoning.”
  • Living in an RVLimited

    Placement and occupancy of recreational vehicles in a permanent RV placement park or in multiple spaces for lease or rent on unincorporated land in Lincoln County.

    • The regulations apply to all lands within Lincoln County exclusive of municipal boundaries.
    • The project must comply with all other applicable state and local laws.
    • Projects providing multiple RV spaces must obtain a facility license from the Montana Department of Public Health and Human Services under Title 50, Chapter 52, MCA.
    • Spaces must permit safe and practical placement and removal of units.
    • Units must be at least 25 feet from property lines abutting a public road and at least 15 feet from other development property lines.
    • Units and attached structures, including RV slide-outs, must be 20 feet from other units and attached structures.
    • A minimum of two tandem parking spaces is required per unit, with a driveway at least 10 feet wide; one guest parking space is required per 10 units.
    • Units intended for permanent residency must be skirted with fire-resistant material enclosing the understructure.
    • On-street parking is not permitted.
    • Unit size and development density may not exceed what DEQ standards allow for water and wastewater design and flow.
    • Developments of 30 or more units require two separate full-time egress routes reviewed by the Fire Protection Authority.
    • The pad must be approved by a professional engineer or state building inspector, be at least 10 feet from the serving street, and provide adequate support and tie-down.
    • Water and wastewater design must comply at minimum with DEQ standards; electrical service must follow utility-provider specifications; solid waste must be handled in acceptable containers and disposed of at a DEQ-licensed facility.
    • The final plan and DEQ approval for RV and mobile home parks must be maintained in the clerk and recorder's office.
    • The linked county document is labeled a draft with an unfilled amendment date; the county update page separately states that regulations were adopted May 27, 2026.

    public-road property-line setback: >= 25 feet · other development property-line setback: >= 15 feet · unit-to-unit separation including attached structures: >= 20 feet · driveway width: >= 10 feet · guest parking: per 1 space per 10 units · separate full-time egress routes: >= 2 routes (required for developments of 30 or more units)

    “7. Design Standards for Mobile/Manufactured/Tiny Home or Permanent RV Placement Parks”
    3 more reviewed findings on this topic
    • Limited — Multiple-space permanent RV placement parks and other projects creating multiple spaces for RVs on land outside municipal boundaries in Lincoln County.
      “7. Design Standards for Mobile/Manufactured/Tiny Home or Permanent RV Placement Parks”
    • Limited — Multiple-space recreational vehicle placement parks and projects providing multiple RV spaces on land outside municipal boundaries in Lincoln County.
      “All units must be located at least 25 feet from any property line abutting a public road and at least 15 feet from other property lines of the development.”
    • Limited — Placement of multiple recreational vehicles in a permanent RV placement park or other project providing multiple RV spaces on land outside municipal boundaries in Lincoln County.
      “or Permanent RV Placement Parks A. Layout”
  • Camping on your landLimited

    Camping at J-Neils Memorial County Park in Lincoln County.

    • Camping is by permit only.
    • The park policy states that camping is primitive camping only.
    • No open fires are allowed.
    • The policy identifies camping other than events for travelers with livestock who can provide brand inspections, if applicable, and other required livestock documentation, and who must check with the park attendant for a permit.
    “XI. CAMPING A. By permit only. B. Primitive camping only. C. No open fires.”
  • Tiny homesLimited

    Placement and occupancy of tiny homes in a mobile/manufactured/tiny home or permanent RV placement park outside municipal boundaries in Lincoln County.

    • The 2026 county regulations expressly provide design standards for Mobile/Manufactured/Tiny Home or Permanent RV Placement Parks.
    • The standards govern park placement and infrastructure; applicable zoning, building codes, sanitation, floodplain, lakeshore, and other state and local requirements also apply.
    • The regulations do not establish unrestricted countywide tiny-home occupancy outside a placement park.

    setback from property line abutting public road: >= 25 feet · setback from other development property lines: >= 15 feet · separation between units and attached structures: >= 20 feet

    “Design Standards for Mobile/Manufactured/Tiny Home”
    One more reviewed finding on this topic
    • Limited — Tiny-home units in multiple-space permanent tiny-home placement parks outside municipal boundaries in Lincoln County.
      “All units must be located at least 25 feet from any property line abutting a public road and at least 15 feet from other property lines of the development.”
  • Manufactured homesLimited

    Placement and occupancy of manufactured homes in a mobile/manufactured/tiny home or permanent RV placement park outside municipal boundaries in Lincoln County.

    • The 2026 county regulations provide design standards for mobile/manufactured-home placement parks.
    • Each unit intended for permanent residency must be skirted with fire-resistant material completely enclosing the understructure.
    • Water and wastewater design must at minimum comply with DEQ Standards.
    • Applicable zoning, building codes, sanitation, floodplain, lakeshore, and other state and local requirements still apply.

    setback from property line abutting public road: >= 25 feet · setback from other development property lines: >= 15 feet · separation between units and attached structures: >= 20 feet · tandem parking spaces per unit: >= 2 spaces

    “Each unit intended for permanent residency must be skirted.”
    2 more reviewed findings on this topic
    • Limited — Placement and occupancy of manufactured homes in a manufactured-home placement park or in multiple spaces for lease or rent on unincorporated land in Lincoln County.
      “7. Design Standards for Mobile/Manufactured/Tiny Home or Permanent RV Placement Parks”
    • Limited — Manufactured-home units in multiple-space mobile/manufactured-home placement parks outside municipal boundaries in Lincoln County.
      “Each unit intended for permanent residency must be skirted. The skirting must be fire-resistant material and completely enclose the understructure.”
  • Off-grid sanitationAllowed (with conditions)

    Non-public onsite wastewater treatment and dispersal systems serving property without municipal sewer in Lincoln County.

    • Individual, shared, and multi-user non-public systems are recognized and regulated by Lincoln County Environmental Health Services.
    • A local wastewater treatment system permit is always required before installation.
    • A qualified site evaluator must perform the site evaluation.
    • The system must comply with state and local requirements, including DEQ Circular 4.
    • Proper placement, type, and sizing depend on a Certificate of Subdivision Approval or site evaluation.
    “on-site wastewater treatment and dispersal”
  • Agricultural exemptionAvailable (with conditions)

    A division of land outside a platted subdivision in unincorporated Lincoln County proposed to create a parcel used exclusively for agricultural purposes or open space.

    • The parcel must be used only for production of livestock or agricultural crops, or preservation of open space.
    • No residential, commercial, or industrial buildings may be built; commercial agricultural-processing facilities are excluded.
    • The parties must enter into a covenant running with the land, revocable only by mutual consent of the governing body and property owner, requiring exclusive agricultural or open-space use.
    • The covenant must be signed by the property owner, buyer or lessee, and governing body.
    • The landowner must demonstrate the agricultural purpose and absence of planned residential, commercial, or industrial buildings.
    • A change to a non-agricultural use subjects the parcel to full subdivision review; prohibited structures may be allowed only after covenant revocation and subdivision review, with governing-body approval to lift the covenant.
    • Lots within platted subdivisions are not eligible.
    • The application requires an Agricultural Exemption Application, survey documents, a review fee of 400, sanitation-exclusion materials, a governing-body-signed acceptance form, a recorded covenant or certification, and any required address or road-name applications.

    review fee: 400

    “The intention of this exemption is to allow a landowner to create a parcel that will be used only for production of livestock or agricultural crops”
  • Subdividing landRegulated (with conditions)

    Subdivision of land within Lincoln County, including unincorporated areas and incorporated areas to the extent the county regulations apply under their jurisdiction provisions.

    • The regulations were amended May 27, 2026 by Resolution 2026-14.
    • If a proposed subdivision lies within one mile of a third-class city or town, two miles of a second-class city, or three miles of a first-class city, the County must submit the preliminary plat to the city or town for review and comment.
    • If a proposed subdivision lies partly within an incorporated city or town, the preliminary plat must be submitted to and approved by both the city or town and the County governing bodies.
    • The regulations supplement other regulations, including zoning, floodplain, building-code, development-code, and fire-code requirements; where requirements conflict, the more restrictive requirements apply.

    third-class city or town review radius: <= 1 mile · second-class city review radius: <= 2 miles · first-class city review radius: <= 3 miles

    “These regulations govern the subdivision of land within the jurisdictional area of the governing body of Lincoln County and governing bodies of incorporated areas.”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Subdivision of land in unincorporated Lincoln County, Montana, under the county subdivision regulations and the Montana Subdivision and Platting Act.
      “The Lincoln County Subdivision Regulations are a requirement of Montana Law under 76-3-501 MCA”
  • Driveway accessRequired

    All new or modified approaches constructed to a Lincoln County road, including residential, commercial, and industrial approaches.

    • The owner or contract purchaser is the proper applicant.
    • The application must include a brief illustrated description, legal description, and applicant contact information.
    • The District Road Foreman inspects the proposed location and may approve or deny the request.
    • If not approved, the Road Foreman explains necessary modifications.
    • Final inspection is required.
    • A $50 fee is charged.
    • The permit is good for 6 months upon receipt of the completed application form.
    • A 12-inch minimum drainage pipe is specified where required; drainage, sight-distance, slope, and width requirements also apply.
    • A maximum 40-foot radius is allowed for a single-dwelling access approach; commercial or industrial access width is left to the County road foreman's discretion.

    approach permit fee: 50 USD · permit validity: 6 months (Upon receipt of completed application form) · minimum sight distance: >= 200 feet · single-dwelling access approach radius: <= 40 feet (Commercial or industrial access width is at County road foreman's discretion)

    “All new or modified approaches constructed to a County road by any person shall require an approach permit.”
  • Building in a floodplainRequired

    Construction or development within any Special Flood Hazard Area in Lincoln County, including A Zones and the 100-year floodplain; home and manufactured-home construction in the 100-year floodplain.

    • A floodplain permit is required before construction or development begins within any SFHA, including A, AE, AO, and other A Zones or the 100-year floodplain.
    • A home or manufactured home in the 100-year floodplain requires a permit application with a site plan.
    • Allowed construction must have the lowest floor two feet above the 100-year floodplain elevation.
    • Construction that does not comply with all Lincoln County floodplain standards is prohibited.
    • Structures generally must be elevated above base flood elevation and may require an engineering evaluation and elevation certificate to determine no adverse impact to upstream properties.
    • Additions must comply with all floodplain standards; if addition and remodeling value exceeds 50% of the existing structure value, the existing structure must be elevated two feet above the 100-year floodplain or flood-proofed according to County standards.
    • Unpermitted improvements may result in fines or required removal.

    lowest-floor elevation above 100-year floodplain elevation: >= 2 feet (Applies to allowed construction in floodplain areas) · substantial-improvement threshold: > 50 percent (If addition and remodeling value exceeds 50% of existing home or business value, elevation or flood-proofing is required)

    “A floodplain permit (at a minimum) is required before construction or development begins within any Special Flood Hazard Area (SFHA);”
  • Permit feesPublished

    Lincoln County Planning Department subdivision, buildings-for-lease-or-rent, zoning-district-creation, floodplain, and lakeshore permit or review fees.

    • The cited fee schedule is labeled 2024 and states it is effective April 1, 2024.
    • Subdivision review includes first minor, subsequent minor, major, mobile home park, RV park, and condo development.
    • Floodplain and lakeshore fee amounts are based on estimated review time and project scale.
    • Permit necessity and fee amount for floodplain and lakeshore matters are determined during sufficiency review.

    subdivision review: per 500 USD/lot · final plat review: 750 USD · buildings for lease/rent: $500 + $50/unit USD · zoning district creation: 1800 USD · floodplain construction permit: 250-750 USD (Fee based on estimated review time and scale of project; permit necessity and fee amount determined during sufficiency review) · after-the-fact permit: 500-1500 USD (Floodplain/lakeshore fee schedule)

    “Planning Department Fee Schedule – 2024 Effective April 1, 2024”
    One more reviewed finding on this topic
    • Variable (with conditions) — Floodplain construction permits and after-the-fact permits administered by Lincoln County.
      “Fee based on estimated review time and scale of project.”
  • Permit processPartial

    Lincoln County Planning Department applications, including subdivision, road-approach, lakeshore, and floodplain matters.

    • Forms may be completed online and emailed to the Planning Department, or printed and delivered in person or by mail with applicable fees.
    • Some listed forms may not yet show the recently changed fee amount; applicants are directed to the fee schedule.
    • The cited page does not establish a complete process for every permit type administered in the county.
    “These forms may be completed online and emailed to the Planning Department, or you may print the form and deliver in person or by mail”

Montana rules that apply here

  • Building permitLimited

    Construction, remodeling, moving, alterations, additions, repairs, or changes of occupancy for buildings subject to Montana state building-code jurisdiction.

    • A state building permit is required before construction for certain types of new buildings and for certain alterations, additions, and repairs.
    • The state permit requirement does not apply to projects within the jurisdictional limits of a certified local government program; local requirements may apply there.
    • In the state's jurisdiction, state law exempts farm and ranch buildings; mining buildings on mining property; petroleum refineries and pulp and paper mills except office and shop buildings; residential buildings containing less than five dwelling units except when serving transient guests; and private garages and private storage buildings used for the owner's own use and not as part of a commercial enterprise or business.
    • Building permits must be issued on required projects before plumbing, mechanical, or electrical permits can be issued and before work authorized under those permits can start.
    “In Montana a state building permit is required prior to the start of construction for certain types of new buildings, and/or for alterations, additions, and repairs.”
    One more reviewed finding on this topic
    • Not required — A single-family residence in unincorporated Lincoln County, Montana, outside the jurisdictional limits of a certified local building-code program.
      “for areas outside cities certified to issue their own permits, state law exempts: [...] residential buildings containing less than five dwelling units”
  • Owner-builder exemptionAvailable

    An owner working on the owner's property, including property in unincorporated Lincoln County, Montana, under Montana's construction-contractor licensing law.

    • The exemption applies to work by an owner on the owner's property, whether or not the property is occupied by the owner.
    • The exemption does not apply when an owner otherwise covered by the chapter constructs an improvement on the owner's property with the intention and purpose of promptly selling the improved property, unless the owner has continuously occupied the property as the owner's primary residence for at least the last 12 months.
    • This claim concerns the construction-contractor licensing exemption and does not by itself establish exemption from septic, electrical, plumbing, mechanical, floodplain, subdivision, or other applicable requirements.
    “(13) to an owner working on the owner's property, whether occupied by the owner or not, but this exemption does not apply to an owner who is otherwise covered by this chapter who constructs an improvement on the owner's property with the intention and for the purpose of promptly selling the improved property, unless the owner has continuously occupied the property as the owner's primary residence for at least the last 12 months;”
  • InspectionsLimited

    Buildings and other projects requiring permits under Montana state building-code jurisdiction; certified local governments may perform inspections within their certified jurisdictional areas.

    • The Montana Building Codes Program performs inspections for projects requiring a permit under state jurisdiction.
    • The permit holder must notify the inspector when work is ready for inspection and provide access for required inspections.
    • Cities, counties, and towns may enforce local building codes and perform inspections only through certified local government programs; remaining areas fall under the state Building Codes Program.
    “The BC Program establishes and enforces statewide codes by issuing permits and performing inspections.”
  • Certificate of occupancyLimited

    Buildings constructed in accordance with the Montana state building code or a county, city, or town building code.

    • The certificate must certify that the building conforms to the applicable building regulations.
    • The statute addresses certificates for buildings constructed under the state or local building code; it does not establish a universal certificate requirement for every structure or every occupancy.
    “A certificate of occupancy for a building constructed in accordance with the provisions of the state building code or county, city, or town building code must certify that the building conforms to the requirements of the building regulations applicable to it.”
  • Who permits septicState

    Public wastewater treatment systems serving more than 24 persons for more than 60 days per year or having more than 14 connections, including such systems in Lincoln County.

    • Montana DEQ has primary responsibility for public wastewater treatment systems.
    • The county page defines public systems as serving more than 24 persons for more than 60 days a year or having more than 14 connections.

    persons served: > 24 persons (service must be for more than 60 days a year) · connections: > 14 connections

    “MDEQ has primary responsibility for public wastewater treatment systems”
    One more reviewed finding on this topic
    • Mixed (with conditions) — Montana statewide sanitation and septic regulation, including subdivision sanitation review and drainfield permitting.
      “The DEQ Subdivision Program reviews divisions of land comprising less than 20 acres [...] This review is limited to sanitation facilities, including the water supply, sewage disposal, solid waste disposal, and storm drainage systems. [...] Yes, even thought you have a COSA, a drainfield permit is still required by the local health department.”
  • Septic permitRequired

    Installation of a drainfield in Montana, including property already covered by a Certificate of Subdivision Approval.

    • A Certificate of Subdivision Approval does not replace the drainfield permit.
    • The cited page identifies the local health department as the permitting authority.
    “Yes, even thought you have a COSA, a drainfield permit is still required by the local health department.”
  • Mandatory utility hookupConditional

    Water-supply and wastewater-disposal arrangements for subdivision parcels in Lincoln County subject to Montana sanitation review.

    • A Certificate of Subdivision Approval identifies the potable water source and wastewater disposal method for the property.
    • The source may be a private well, municipal water system, or cistern.
    • Wastewater may be disposed through a drainfield/septic system or municipal wastewater facility.
    • The source does not establish a countywide requirement that every property connect to public water or sewer.
    “The COSA outlines what the use of the property is [...] what the potable water source will be [...] and where wastewater will be disposed”
  • Short-term rentalsLimited

    Short-term rentals operated in Montana.

    • A Property Manager license is required unless the operator qualifies for an exemption under MCA § 37-56-104 or MCA § 50-51.
    • Local land-use, lodging, tax, and public-accommodation requirements may also apply.

    application fee: 50 USD

    “Short Term Rentals: A Property Manager license is required for short term rentals unless an operator qualifies for an exemption”
  • Campground & park staysLimited

    Camping in Montana Fish, Wildlife & Parks public-use sites.

    • Camping is prohibited except in areas specifically designated or marked for camping.
    • A camping unit, vehicle, equipment, or personal items may not be left overnight without a person present.
    • Camping longer than 7 nights at one or more campsites in a public use area during any consecutive 30-day period is prohibited unless otherwise posted by the department.
    • Designated occupancy limits must not be exceeded.
    • Special-use-permit terms must be followed unless otherwise posted.
    • Campsites must be vacated by 1 p.m. on the day of departure; camping facilities must be vacated by 12 p.m. on the day of departure.

    maximum camping duration: <= 7 nights per consecutive 30-day period (unless otherwise posted by the department) · campsite departure time: 1 p.m. · camping-facility departure time: 12 p.m.

    “Unless otherwise posted by the department, within a public use site it is prohibited to: [...] camp at one or more campsites in a public use area for a period of longer than 7 nights during any consecutive 30-day period, beginning with the first night occupied unless otherwise posted by the department;”
  • county zoning authorityGeneral

    Montana boards of county commissioners adopting zoning regulations for all or parts of their jurisdictional areas, including unincorporated land.

    • The board of county commissioners must have adopted a growth policy pursuant to Montana Code Annotated chapter 1.
    • Zoning regulations must be adopted in accordance with Title 76, chapter 2.
    • The statute also contains a temporary provision for counties that adopted a master plan before October 1, 1999; that provision authorized adoption or revision only until October 1, 2006.
    “a board of county commissioners that has adopted a growth policy pursuant to chapter 1 is authorized to adopt zoning regulations”

Inside cities and towns in Lincoln County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

  • Zoning districtsPublished (with conditions)

    The City of Libby within Lincoln County, Montana.

    • The official map is specifically for the City of Libby and does not establish countywide or unincorporated-area zoning districts.
    • The map identifies Agriculture, Suburdan, Business, Business Residential, Industrial, Medical, Parks & Open Space District, Residential A, Residential B, and Residential C districts.
    • The map states a date of November 26, 2012 and identifies revision dates through October 4, 2012.
    • Parcel boundaries are for general reference only and should not be relied on for precision.
    “Official Libby Zoning Map Zoning Agriculture Suburdan Business Business Residential Industrial Medical Parks & Open Space District Residential A Residential B Residential C”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Minimum dwelling size — Minimum dwelling size for residential construction in unincorporated Lincoln County, including the Lower Yaak Zoning District.
  • Minimum lot size — Minimum lot size for residential construction in unincorporated Lincoln County, including the Lower Yaak Zoning District.
  • Setbacks — Setbacks for development in unincorporated Lincoln County outside any incorporated municipality or separately adopted district.
  • Lot coverage — Lot coverage for development in unincorporated Lincoln County, including the Lower Yaak Zoning District.
  • Building height — Building height in unincorporated Lincoln County, including the Lower Yaak Zoning District.
1 more unanswered
  • Accessory dwellings

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.

Living off-grid in Lincoln County, Montana

Is Lincoln County a good place to live off-grid or homestead?

Lincoln County scores 74/100 on the Bolthole Index, a strong county profile. Its strengths: deep seclusion — about 3,776 people within 15 miles and a stronger property-autonomy legal backdrop.

Do you need a building permit in Lincoln County, Montana?

Lincoln County does not require a county building permit for a home in unincorporated areas, and it enforces county zoning. Onsite septic is permitted by Lincoln County Health Department (Environmental Health). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

Can you live in an RV or tiny home on your land in Lincoln County?

Living in an RV on your own land in Lincoln County is limited to specific cases: Placement and occupancy of recreational vehicles in a permanent RV placement park or in multiple spaces for lease or rent on unincorporated land in Lincoln County. The regulations apply to all lands within Lincoln County exclusive of municipal boundaries. The project must comply with all other applicable state and local laws. A tiny home is limited to specific cases. Confirm with the county before relying on it.

How much does land cost in Lincoln County, Montana?

Land in Lincoln County runs about $4,690 per acre, based on the latest county data.

What is the water situation in Lincoln County?

Lincoln County gets about 32" of rain a year, with severe drought in roughly 11.7% of years.

How remote is Lincoln County?

A typical private-land location has about 3,776 people within 15 miles and 370,264 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

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

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How Lincoln compares in Montana

Compare side-by-side →See all 56 Montana counties ranked →