Bolthole Index

Liberty County, Montana

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

52Index Score / 100
#38 of 56 in Montana

Liberty County, Montana requires notification before you build, add to or alter a building, but the county's notice does not say that every home project needs a county building permit1. Montana separately requires state permits for certain covered buildings while exempting several categories, including residential buildings with fewer than five dwelling units that do not serve transient guests2. Onsite wastewater goes through the Liberty County Sanitarian3.

At a glance

Building permit
County construction notice required; a universal county permit is not established41
Zoning
The county maintains a zoning page, but countywide coverage is unconfirmed5
Septic permit
Handled by the Liberty County Sanitarian under Montana DEQ Circular 463
RV living
Not confirmed for private land; ask the County Commissioners before relying on it1
Tiny home
Occupancy and minimum-size rules are not confirmed; ask the County Commissioners5
Owner-builder
No Liberty County owner-builder exemption was confirmed7
State-highway driveway
A new or modified approach needs an MDT permit or right-of-way agreement8

Who to call

Building permits

Liberty County Construction Notification

Notice of plans to build, add to or alter buildings in Liberty County

Septic permits

Liberty County Sanitarian

Onsite wastewater applications and administration for Liberty County

719-433-6137

[email protected]

Planning & zoning

Liberty County Commissioners

Subdivision review and approval, county policy and road oversight

406.759.5365

[email protected]

111 1st East, Chester, MT 59522

Roads & driveways

Liberty County Road Department

County roads, bridges and advance approval of county-road approaches

406.759.5623

[email protected]

1354 3360 Road South, Chester, MT 59522

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 Liberty County, Montana?

Liberty County requires notification before plans to build, add to or alter a building move forward, and the county provides a fillable Notice of Construction form19. That is narrower than saying every residential project needs a county building permit: the county source establishes the notice, but not a universal permit requirement1. Montana's Building Codes Program requires a state building permit for certain covered construction outside a certified local program, while state law exempts farm and ranch buildings, private owner-use garages and storage buildings, and residential buildings containing fewer than five dwelling units unless they serve transient guests2. Because Liberty County's local code adoption and inspection requirements remain unconfirmed, submit the county notice and ask the Commissioners whether any additional local approval applies to your exact project before work starts10.

Who handles Liberty County building and land permits?

Liberty County does not identify a conventional building department in the available county material; instead, its Public Notices page supplies the construction-notification form19. The Liberty County Commissioners are the practical county contact for unresolved building, zoning and land-use questions, and the Commission administers subdivision review and approval1110. Reach the Commissioners at 406.759.5365 or [email protected] at 111 1st East, Chester, MT 5952210. For a covered project under state jurisdiction, the Montana Building Codes Program issues permits and performs inspections12. State-administered projects require construction plans and a Building Permit/Plan Review Application, with separate electrical, plumbing or mechanical permits potentially required13.

Does Liberty County have zoning?

Liberty County maintains an official zoning page with adopted zoning maps or districts, but we could not confirm that zoning applies countywide5. Montana law allows county commissioners to adopt zoning for all or part of their jurisdiction after adopting a growth policy, so a map or district can cover only part of a county14. Confirm the parcel's district and whether it lies inside Chester or another incorporated area before treating a county map as the full answer5. We could not confirm a countywide schedule for setbacks, minimum lot size, minimum dwelling size, lot coverage or building height, so ask the Commissioners for the rule tied to the parcel rather than assuming the land is unrestricted10.

How do septic permits work in Liberty County?

Liberty County's Sanitarian administers onsite wastewater locally, and the county follows Montana DEQ Circular 4315. Contact the Liberty County Sanitarian at 719-433-6137 or [email protected] before settling on a house site15. Montana requires a local-health-department drainfield permit even when a property already has a Certificate of Subdivision Approval16. Soil constraints make early evaluation especially important: only about 9.1% of Liberty County soils are rated without severe limits for a conventional septic drain field17. The county source does not confirm a separate inspection rule, so ask the Sanitarian what inspections and final signoff your design will require15.

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

Liberty County's available rules do not confirm whether a person may occupy an RV on private land, either temporarily or while building. The statewide camping limit in the available material applies to Montana Fish, Wildlife & Parks public-use sites, not private property, so it does not answer the private-land question18. Tiny-home occupancy, manufactured-home occupancy, accessory dwellings and a county minimum dwelling size are also unconfirmed for Liberty County. Ask the Commissioners whether the parcel is within a zoning district and what use or dimensional standards apply before buying a small dwelling or planning temporary occupancy510. Any occupied structure using onsite wastewater still needs to be planned with the County Sanitarian because Liberty County administers septic under Montana DEQ Circular 43.

Building a home in Liberty County: the steps, in order

  1. Ask the Liberty County Commissioners whether the parcel lies in a zoning district and whether local building, setback or floodplain review applies510.
  2. Submit Liberty County's Notice of Construction before building, adding to or altering the building199.
  3. Contact the County Sanitarian early, submit the septic application and confirm the required site evaluation, design and inspections315.
  4. If the project falls under state building-code jurisdiction, submit plans and the state Building Permit/Plan Review Application before starting covered work13.
  5. If access is from a county road, obtain advance approval for the approach from the Road Supervisor and Commissioners20.
  6. If access is from a state highway, obtain an MDT approach permit or right-of-way agreement8.
  7. If the site is in a designated Special Flood Hazard Area, obtain the local floodplain administrator's development permit21.

What should you check before buying land in Liberty County?

Start with septic feasibility because only about 9.1% of Liberty County soils are rated without severe limits for a conventional drain field17. Water planning also matters in a dry climate: annual precipitation averages about 12.2 inches, and severe drought has occurred in about 13.8% of years2223. Most land is comparatively gentle, with about 87.6% at a slope of 15% or less, but a gentle parcel can still have unsuitable drainfield soils2417. Confirm legal access and determine whether the entrance meets a county road or a state highway because the approval path differs208. Check flood status before placing a home, driveway, fill or utilities because development in a designated Special Flood Hazard Area requires local approval21. Property taxes average an effective rate of about 1%, with a median annual bill near $1,2042526.

Watch-outs

  • Liberty County's construction notice is not proof that every home needs a county building permit; submit the notice and ask the Commissioners what additional review applies110.
  • The official zoning page does not establish countywide coverage in the available material, so confirm the parcel's district before relying on assumptions about RVs, tiny homes, setbacks or minimum size510.
  • Conventional septic may be difficult because only about 9.1% of county soils are rated without severe drainfield limits; contact the Sanitarian before fixing the house site1715.

Sources

  1. Public Notices | Liberty County MT, quoted and re-checked
  2. Building Permits (Montana statewide rule), quoted and re-checked
  3. Public Notices | Liberty County MT, quoted and re-checked
  4. Public Notices | Liberty County MT (2026 county census)
  5. Liberty County MT - Zoning (2026 county census)
  6. Public Notices | Liberty County MT (2026 county census)
  7. (2026 county census)
  8. Approach Manual for Landowners and Developers (Montana statewide rule), quoted and re-checked
  9. Liberty County Construction Notification (libertycountymt.gov)
  10. Liberty County Commissioners (libertycountymt.gov)
  11. Commissioners | Liberty County MT, quoted and re-checked
  12. Building Permits (Montana statewide rule), quoted and re-checked
  13. Building Permits (Montana statewide rule), quoted and re-checked
  14. 76-2-201. County zoning authorized, MCA (Montana statewide rule), quoted and re-checked
  15. Liberty County Sanitarian (libertycountymt.gov)
  16. Engineering Infrastructure & Subdivisions (Montana statewide rule), quoted and re-checked
  17. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  18. Public Use Rules and Regulations (Montana statewide rule), quoted and re-checked
  19. Public Notices | Liberty County MT, quoted and re-checked
  20. Liberty County Road Department (libertycountymt.gov)
  21. Stream Permitting (Montana statewide rule), quoted and re-checked
  22. Annual precipitation: Bolthole Index county data
  23. Share of years in severe drought: Bolthole Index county data
  24. Share of land at 15% slope or less: Bolthole Index county data
  25. Effective property tax rate: Bolthole Index county data
  26. Median property tax bill: Bolthole Index county data

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

Liberty County in Montana

52
County map
Liberty County highlighted among the Montana counties · colored by Index score

How Liberty County scores

Seclusion88100% ev.
Self-Sufficiency1798% ev.
Admin Boringness6690% ev.
Durability50100% ev.
Property Autonomy83100% ev.
Carry Cost8494% ev.

Evidence strength: 97%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$226kTypical home
1%Property tax
$1,237Land / acre
12.2"Annual rain
13.8% of yrsSevere drought
3.2 / yr (+2.9)Mid-century 100°F days
24.3 daysMid-century dry spell
0.93" (+4.2%)Mid-century 1-day rain
1.24×Wildfire change factor
100%Forward climate coverage
state median fallbackInsurance basis
639Radius comparison (15 mi)
1.4People / sq mi
2.7%Federal land
87.6%Land at 15% slope or less
9.1%Septic soil without severe limits
82,200 acWorkable land screen
1.5%Wooded land
30 tonsBiomass / forest ac
42.1°FAvg temp

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Answers from the rulebook for Liberty County

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

Liberty County rules

  • Building permitLimited

    Plans to build, add to, or alter buildings in Liberty County.

    • Liberty County expressly requires notification of plans.
    • The source does not establish that every residential project requires a county building permit.
    “Liberty County requires notification of plans to build, add to or alter buildings. Click below for the fillable form.”
  • Who permits septicCounty

    Onsite wastewater permitting and administration in Liberty County.

    • Liberty County follows Montana DEQ Circular 4.
    • The county page directs applicants to the county Sanitarian.
    “Liberty County follows Montana DEQ Circular 4. Please contact the county Sanitarian, Sarah Robbin, at 719-433-6137 or [email protected] for more information.”
  • Subdividing landRegulated (with conditions)

    Subdivision review and approval in Liberty County.

    • Subdivision review and approval is administered by the county commission.
    • Montana DEQ sanitation approval may also be required through a Certificate of Subdivision Approval.
    “The Commission supervises the administration of County government; approves the County budget; levies taxes; issues bonds; investigates claims against the County; administers subdivision review and approval; and supervises road construction and maintenance.”
  • Permit processPartial

    Construction notification and septic application processes in Liberty County.

    • Construction plans to build, add to, or alter buildings require county notification.
    • A septic application form is used for new structures with septic and specified septic replacements.
    • Applicants are directed to contact the county Sanitarian for more information.
    “Liberty County requires notification of plans to build, add to or alter buildings. Click below for the fillable form.”
  • County-wide zoningPresent

    Liberty County maintains an official Zoning page with adopted zoning maps/districts for the county.

    Liberty County MT - Zoning ↗Scouted from the county site, not yet independently re-checked

Montana rules that apply here

  • Building code adoptedAdopted (with conditions)

    Montana's uniform state building code for residential and commercial buildings statewide.

    • The currently listed codes are amended and adopted through Administrative Rules of Montana Title 24, Chapter 301.
    • Cities, counties, and towns may enforce local building codes, all or in part, only through certified local building-code-enforcement programs.
    • State-owned agencies must be permitted through the Montana Department of Labor and Industry.
    • The listed 2021 International Building, Residential, and Existing Building Codes and related codes are effective June 11, 2022; the listed ASME boiler and pressure-vessel codes are effective November 6, 2021.

    International Building Code edition: 2021 · International Residential Code edition: 2021 · effective date for listed principal codes: 2022-06-11 (ASME boiler and pressure-vessel codes listed on the official page are effective 2021-11-06)

    “In addition, the program is responsible for adopting a uniform state building code, which is enforced statewide for residential and commercial buildings across Montana.”
  • 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.”
  • 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.”
  • Driveway accessLimited

    New or modified driveway approaches intersecting Montana state highways, and changes in use of property abutting a state highway or an existing approach.

    • A new or modified approach requires either an approach permit or a right-of-way agreement.
    • A change in property use or change in use of an existing approach requires a new approach permit.
    • The landowner is responsible for obtaining the new permit.
    • The application must be made to the appropriate MDT District Office.
    • A detailed site plan and Environmental Checklist Form are required.
    • The requirement concerns state highways; local roads may be administered by local governments.
    “ALL NEW OR MODIFIED APPROACHES REQUIRE EITHER AN APPROACH PERMIT OR A RIGHT-OF-WAY AGREEMENT.”
  • Building in a floodplainRequired

    New development within a designated Special Flood Hazard Area in Montana.

    • The applicant must check with the local floodplain administrator to determine whether an SFHA has been designated.
    • Covered development includes placement of fill, roads, bridges, culverts, transmission lines, irrigation facilities, storage of equipment or materials, excavation, new construction or development, placement or replacement of manufactured homes, and new construction, additions, or substantial improvements to residential and commercial buildings.
    • Permit applications are obtained from the local floodplain administrator.
    • Application fees and timelines are established by the local government and vary widely throughout the state.
    “Anyone planning new development within a designated Special Flood Hazard Areas (SFHA).”
  • 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”
  • Permit feesVariable (with conditions)

    State building permit and plan-review fees for state-administered building permits.

    • The building permit fee is calculated by the bureau under IBC Section 109.2 as modified by ARM 24.301.138.
    • A plan review fee is charged in addition to the building permit fee and equals 35 percent of the building permit fee.
    • Both fees must be paid before the building permit is issued.
    • Local governments certified to enforce the state building code may establish their own permit fees and valuation method.

    plan review fee: 35 percent of building permit fee

    “The plan review fee is 35 percent of the building permit fee as established in Table 109.2.”
  • 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”

Still unanswered

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

  • Owner-builder exemption — Owner-builder exemptions in Liberty County.
  • Local zoning — Aggregate local zoning across Liberty County municipalities and unincorporated areas.
  • Zoning districts — Published zoning districts and maps in Liberty County.
  • Minimum dwelling size — Minimum dwelling size in Liberty County.
  • Minimum lot size — Minimum lot size in Liberty County.
13 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption

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 Liberty County, Montana

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

Liberty County scores 52/100 on the Bolthole Index, a solid county profile. Its strengths: deep seclusion — about 639 people within 15 miles and manageable long-term carry cost. Watch-outs: weak self-sufficiency basics: only 12.2″ of rain a year.

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

Liberty County requires a building permit only in limited cases (such as floodplains or specific zones), and it enforces county zoning. Onsite septic is permitted by Liberty County Health Department (County Sanitarian). 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.

How much does land cost in Liberty County, Montana?

Land in Liberty County runs about $1,237 per acre, based on the latest county data.

What is the water situation in Liberty County?

Liberty County gets about 12.2" of rain a year, with severe drought in roughly 13.8% of years.

How remote is Liberty County?

A typical private-land location has about 639 people within 15 miles and 277,406 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

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

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How Liberty compares in Montana

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