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 a construction notification for plans to build, add to or alter a building, plus any permit required by the Montana Building Codes Program12. Many common rural projects are exempt from the state building permit3. Liberty County has no countywide zoning ordinance4, and onsite wastewater permits go through the Liberty County Sanitarian56.

At a glance

Building permit
County notice plus any required state permits; common rural structures are state-exempt123
Zoning
No countywide zoning ordinance; the county website posts zoning maps, so confirm your parcel with the Commissioners47
Septic permit
County Sanitarian permit; $150 new or $75 replacement68
RV living
No county RV rule found; the county has no countywide zoning ordinance, but confirm with the Commissioners. Septic and other permits still apply49
Tiny home
No county tiny-home or minimum-size standard found; building notification and septic rules still apply1
Owner-builder
Owner work is exempt from contractor registration, not from required permits1011
State-highway driveway
A new or modified approach needs an MDT permit or right-of-way agreement12

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

Planning & zoning

Liberty County Commissioners

Subdivision review and approval, county policy and road oversight

406.759.5365

com@libertycountymt.gov

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

road@libertycountymt.gov

1354 3360 Road South, Chester, MT 59522

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

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

Liberty County requires its construction notification for plans to build, add to or alter a building; the county form also covers relocations and requires every permit that applies through the Montana Building Codes Program1213. Montana's state jurisdiction exempts farm and ranch buildings, private owner-use garages and storage buildings, and residential buildings with fewer than five dwelling units unless they serve transient guests; electrical, plumbing or mechanical permits may still be required314. The state program adopts the statewide code, issues permits and inspects projects that require them where no certified local program governs1516. An owner working on the owner's property is exempt from Montana's contractor-registration chapter, but that exemption does not waive applicable building or trade permits11.

Who handles Liberty County building and land permits?

Liberty County routes its construction notification to the County Commissioners rather than identifying a conventional county building department171813. The Liberty County Commissioners administer subdivision review and approval, while Montana DEQ reviews sanitation facilities for divisions creating parcels smaller than 20 acres and certain condominiums and recreational camping vehicle or mobile-home parks regardless of parcel size192021. Reach the Commissioners at 406.759.5365 or com@libertycountymt.gov at 111 1st East, Chester, MT 5952221. For work requiring a state permit, the Montana Building Codes Program issues the permit and provides field inspections1516. A state-administered project requires plans and a Building Permit/Plan Review Application, and separate electrical, plumbing or mechanical permits may apply22.

Does Liberty County have zoning?

Liberty County has no countywide zoning ordinance.4 The state hazard-mitigation assessment for Liberty County names the airport in Chester as the only place with zoning.4 We found no published county standard for minimum dwelling size, minimum lot size, setbacks, lot coverage or building height, so confirm those with the Commissioners before you design.21 Montana law lets county commissioners adopt zoning after adopting a growth policy, so the Commissioners could change this.23 The county website does post zoning maps, but the page does not give district names or standards, so we could not match those maps to any rule.7 Before you buy, ask the Liberty County Commissioners whether any mapped district covers your parcel, and check with the town if the land is inside Chester or another incorporated area.21 Zoning is only one layer: building notification, septic permits and driveway approvals still apply outside any zoning district.19

How do septic permits work in Liberty County?

The Liberty County Sanitarian handles onsite wastewater permits under Montana DEQ Circular 45624. A permit covers a new house or structure using onsite wastewater and replacement components such as a tank or leachfield9. Liberty County publishes a $150 fee for a new septic permit and a $75 fee for a replacement permit8. The application asks for property, water-supply, setback, soil, nitrate and site-plan information18. Before permit issuance, the owner must provide a six-foot test pit for the soil evaluation unless a professional engineer performs the evaluation and supplies a report at the owner's expense25. A nitrate sample is required when a well is within one mile of the proposed drainfield, and the county says the soil evaluation may take up to a month9. Contact the Sanitarian at 719-433-6137 or sarahrobbin1@gmail.com before fixing the house site24. Only about 9.1% of Liberty County soils are rated without severe limits for a conventional drain field26.

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

Liberty County has no countywide zoning ordinance.4 We found no county rule on RV occupancy, tiny-home occupancy, accessory dwellings, manufactured-home occupancy or temporary camping on unincorporated private land, so none is confirmed either way.21 Whatever the answer on occupancy, any new house or structure using onsite wastewater still needs the county septic application and permit.9 A building that is built, added to or altered, including a relocated one, still triggers the county construction notification.12 The statewide camping rule covers public-use sites rather than private property, so it does not answer the private-land question.27 Rules inside Chester or another incorporated area were not confirmed, and the county website posts zoning maps we could not match to a rule, so ask the Commissioners before buying a small dwelling or planning long-term occupancy.721

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

  1. Ask the Liberty County Commissioners whether any published zoning map covers the parcel, and whether local setback or floodplain review applies; the county has no countywide zoning ordinance4721.
  2. Return Liberty County's construction notification to the Commissioners for plans to build, add to, alter or relocate a building1218.
  3. Determine whether the project is state-exempt or requires state building and trade permits; a farm or ranch building is exempt from the state building permit but not from the county notification or other land-use requirements314.
  4. Contact the County Sanitarian, submit the septic application and arrange the pre-permit soil evaluation51725.
  5. Obtain advance approval for a county-road approach from the Road Supervisor and Commissioners, or an MDT permit or right-of-way agreement for a state-highway approach2812.
  6. If the site is in a designated Special Flood Hazard Area, obtain the local floodplain administrator's development permit29.

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 field26. 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 years3031. 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 soils3226. Confirm legal access and determine whether the entrance meets a county road or a state highway because the approval path differs2812. Check flood status before placing a home, driveway, fill or utilities because development in a designated Special Flood Hazard Area requires local approval29. Property taxes average an effective rate of about 1%, with a median annual bill near $1,2043334.

Watch-outs

  • Liberty County requires its construction notification even when a farm, ranch or qualifying residential building is exempt from the state building permit1214.
  • Liberty County has no countywide zoning ordinance, but its website posts zoning maps without district standards, so confirm with the Commissioners that no mapped district covers your parcel before relying on the absence of rules for RVs, tiny homes, setbacks or minimum size4721.
  • The septic soil evaluation happens before permit issuance and may take up to a month, so contact the Sanitarian before fixing the house site or schedule924.

Sources

  1. Public Notices | Liberty County MT, quoted and re-checked
  2. Liberty County Construction and/or Relocation Notification, quoted and re-checked
  3. Building Permits, quoted and re-checked
  4. Central Montana Central Region Hazard Mitigation Plan, Annex J: Liberty County, quoted and re-checked
  5. Public Notices | Liberty County MT, quoted and re-checked
  6. Public Notices | Liberty County MT, quoted and re-checked
  7. Zoning | Liberty County MT, quoted and re-checked
  8. Liberty County Septic Application, quoted and re-checked
  9. Public Notices | Liberty County MT, quoted and re-checked
  10. mca.legmt.gov (2026 county census)
  11. Montana Code Annotated, Title 37, Chapter 45, Construction Contractors (Montana statewide rule), quoted and re-checked
  12. Approach Manual for Landowners and Developers (Montana statewide rule), quoted and re-checked
  13. Liberty County Construction Notification (libertycountymt.gov)
  14. Building Permits, quoted and re-checked
  15. Montana Building Codes Program, quoted and re-checked
  16. Montana Building Codes Program, quoted and re-checked
  17. Public Notices | Liberty County MT, quoted and re-checked
  18. Liberty County Construction and/or Relocation Notification, quoted and re-checked
  19. Commissioners | Liberty County MT, quoted and re-checked
  20. Engineering Infrastructure & Subdivisions, quoted and re-checked
  21. Liberty County Commissioners (libertycountymt.gov)
  22. Building Permits (Montana statewide rule), quoted and re-checked
  23. Montana’s 2019 Land Use & Planning Statutes (Montana statewide rule), quoted and re-checked
  24. Liberty County Sanitarian (libertycountymt.gov)
  25. Liberty County Septic Application, quoted and re-checked
  26. 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
  27. Public Use Rules and Regulations (Montana statewide rule), quoted and re-checked
  28. Liberty County Road Department (libertycountymt.gov)
  29. Stream Permitting (Montana statewide rule), quoted and re-checked
  30. Annual precipitation: Bolthole Index county data
  31. Share of years in severe drought: Bolthole Index county data
  32. Share of land at 15% slope or less: Bolthole Index county data
  33. Effective property tax rate: Bolthole Index county data
  34. Median property tax bill: Bolthole Index county data

Written October 10, 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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Compared with neighboring counties

Unlike 4 of its 6 neighbors, Liberty County requires a building permit only in limited cases.

RuleLiberty CountyToole CountyHill CountyChouteau CountyPondera CountyTeton CountyGlacier County
Building permitLimitedNot requiredLimitedLimitedNot requiredNot requiredNot required
County zoningNoYesYesYesNoNoYes
Septic permitsCounty Health Dept.County Env. HealthCounty Health Dept.County SanitarianCounty SanitarianCounty SanitarianCounty Sanitarian

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%Soils rated "not limited" for septic (strict USDA rating)
82,200 acWorkable land screen
1.5%Wooded land
30 tonsBiomass / forest ac
42.1°FAvg temp

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Cities and towns in Liberty County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Town of Chester

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

    Construction, additions, alterations, or relocations in Liberty County.

    • Liberty County requires notification for plans to erect, add to, or structurally alter buildings or property.
    • Only permits required by Montana's building division are required by the county form.
    • State exemptions include farm or ranch buildings, private homes and apartments with four or fewer units not serving transient guests, mine buildings, private storage buildings, and garages.
    “Liberty County requires notification of plans to build, add to or alter buildings. Click below for the fillable form.”
    One more reviewed finding on this topic
    • Limited — Plans to build, add to, or alter buildings in Liberty County.
      “Liberty County requires notification of plans to build, add to or alter buildings. Click below for the fillable form.”
  • County-wide zoningAbsent

    General county zoning code or ordinance for Liberty County, including unincorporated land.

    • The official state hazard-mitigation assessment identifies no Liberty County zoning code or ordinance.
    • The assessment separately states that the Airport in Chester is the only place with zoning.
    “Zoning Code or Ordinance No The Airport in Chester is the only place with zoning”
  • Local zoningVaries (with conditions)

    Local zoning within Liberty County, aggregated across the county and the Town of Chester; zoning is not countywide, but the official assessment identifies zoning at the airport in Chester.

    • The aggregate conclusion does not mean Liberty County administers the Chester airport zoning.
    • The official assessment states that the Airport in Chester is the only place with zoning.
    “Zoning Code or Ordinance No The Airport in Chester is the only place with zoning”
    One more reviewed finding on this topic
    • Present (with conditions) — Zoning administered or documented by Liberty County through its official zoning-map materials.
      “To view a PDF of the below zoning maps click here.”
  • Zoning districtsPublished (with conditions)

    Liberty County zoning maps and mapped districts.

    • The official page publishes or links maps, but the reviewed page does not provide the ordinance text, district names, or dimensional standards.
    “To view a PDF of the below zoning maps click here.”
  • Who permits septicCounty (with conditions)

    Onsite wastewater permitting in Liberty County.

    • Liberty County follows Montana DEQ Circular 4.
    • The county identifies the County Sanitarian as the contact for septic permits.
    “Liberty County follows Montana DEQ Circular 4. Please contact the county Sanitarian, Sarah Robbin, at 719-433-6137 or sarahrobbin1@gmail.com for more information.”
    One more reviewed finding on this topic
    • County — Onsite wastewater permitting and administration in Liberty County.
      “Liberty County follows Montana DEQ Circular 4. Please contact the county Sanitarian, Sarah Robbin, at 719-433-6137 or sarahrobbin1@gmail.com for more information.”
  • Septic permitRequired

    A new house or structure with onsite wastewater disposal, and replacement of septic components, in Liberty County.

    • The county form applies to a new house or structure with septic and replacement of parts such as a new tank or leachfield.
    • A soil evaluation must occur before issuance.
    • Nitrate results are required before issuance when a well is within one mile.

    new permit fee: 150 USD · replacement permit fee: 75 USD

    “Yes, even thought you have a COSA, a drainfield permit is still required by the local health department.”
  • Septic inspectionLimited

    Pre-permit soil evaluation for proposed septic drainfields.

    • The evaluation occurs before septic permit issuance.
    • The owner must provide a six-foot test hole/pit unless a professional engineer performs the evaluation and provides a report at the owner’s expense.

    test-hole depth: 6 feet (A professional engineer may perform the evaluation instead.)

    “The owner must have a test hole/pit dug down to 6 feet with a backhoe in the general area of the drainfield.”
  • 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 feesPublished (with conditions)

    Liberty County septic permits.

    • The published fees distinguish new septic permits from replacement permits.

    new septic permit: 150 USD · replacement septic permit: 75 USD

    “Liberty County Sanitarian $150 – New Permit [...] $75 – Replacement”
  • Permit processPublished (with conditions)

    County construction-notification and septic-permit process.

    • Construction notification requires owner, mailing address, physical address, township, range, section, structure type, printed name, signature, and date.
    • A septic permit is required when applicable through the County Sanitarian.
    • Completed construction notification is returned to the Liberty County Commissioners.
    “Liberty County requires notification of plans to build, add to or alter buildings. Click below for the fillable form.”
    One more reviewed finding on this topic
    • Partial — Construction notification and septic application processes in Liberty County.
      “Liberty County requires notification of plans to build, add to or alter buildings. Click below for the fillable form.”

Montana rules that apply here

  • Owner-builder exemptionConditional

    Plumbing installation by an owner of a single-family residence used exclusively for the owner's personal use.

    • The exemption concerns plumbing licensure and sanitary plumbing/potable-water piping.
    • The residence must be a single-family residence.
    • The residence must be used exclusively for the owner's personal use.
    • The owner must personally install all sanitary plumbing and potable water supply piping.
    • This state plumbing exemption does not establish a general exemption from zoning, septic, electrical, mechanical, or other applicable requirements.
    “Licensure is not required in the following instances of plumbing installation: (a) when an owner of a single-family residence used exclusively for the owner's personal use installs all sanitary plumbing and potable water supply piping”
    One more reviewed finding on this topic
    • Available — An owner working on the owner's property, or an owner contracting for work performed by a registered construction contractor, under Montana's construction-contractor licensing chapter.
      “(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”
  • 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.”
    2 more reviewed findings on this topic
    • Partial — Montana building-code enforcement, including Liberty County where no certified local program applies.
      “The program also ensures the safety of boilers and elevators by performing annual inspections. In addition, the program is responsible for adopting a uniform state building code, which is enforced statewide for residential and commercial buildings across Montana.”
    • Partial — Montana's statewide building-code framework for residential and commercial construction.
      “In Montana, cities, counties and towns have the option to enforce local building, electrical, plumbing, and mechanical codes, all or in part (except for state-owned agencies, which must be permitted through this Department). These local building code enforcement programs must be certified by the BC Program. The remaining cities, counties and towns that have chosen not to enforce building codes, fall under the jurisdiction of the BC Program. [...] 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.”
    One more reviewed finding on this topic
    • Limited — Projects requiring permits under Montana’s state building-code jurisdiction.
      “Field inspection staff for the programs are positioned around the state to ensure adequate coverage for inspection and regulation of projects requiring a permit.”
  • 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.”
  • Living in an RVLimited

    RV, camper-trailer, and other trailer overnight use for general recreation on legally accessible Montana state trust land administered by DNRC.

    • A Conservation License is required for dispersed camping on state trust land.
    • RV or trailer camping must be within 50 feet of a customary access point; motorized vehicles must be parked within 50 feet of a customary access point, and the camper or trailer may not be set up farther away by driving beyond that point.
    • On leased or licensed land, the stay limit is 2 days.
    • On unleased or unlicensed land, the stay limit is 16 days within a 30-day period.
    • Within a designated campground, the stay limit is 16 days within a 30-day period.
    • The local DNRC field office should be contacted to confirm whether land is leased.
    • Pets must be leashed or otherwise controlled.
    • Overnight horses must be restrained, may not remain in a stream riparian zone for more than one hour, and must use certified weed-seed-free feed.
    • Campfires are generally permitted within designated campgrounds and on unleased or unlicensed land but are not allowed on leased land.
    • Cutting firewood requires a separate permit from the local DNRC field office, and fireworks are not allowed on state land.
    • State Parks, Fishing Access Sites, and Wildlife Management Areas are managed by Montana Fish, Wildlife and Parks rather than under this DNRC camping page.

    RV/trailer distance from customary access point: <= 50 ft (Motorized vehicles must be parked within 50 feet; the page states the camper or trailer may not be driven farther to set it up.) · maximum stay on leased or licensed land: 2 days · maximum stay on unleased or unlicensed land: 16 days within a 30-day period · maximum stay within designated campground: 16 days within a 30-day period

    “TRAILER/RV etc. Camp within 50 ft of a customary access point. Motorized vehicles must be parked within 50 ft of a customary access point. You may not drive further to set up a camper or trailer. On leased or licensed land: 2 days On unleased/unlicensed land: 16 days within a 30-day period Within designated campground: 16 days within a 30-day period”
  • Manufactured homesAllowed (with conditions)

    Manufactured housing used as residential housing within Montana municipalities that exercise zoning powers under MCA Title 76, chapter 2, part 3.

    • Municipal zoning regulations may not treat manufactured housing or factory-built housing units differently from other residential units.
    • Placement remains subject to applicable municipal zoning districts, permits or variances where required, building-code requirements, and other applicable health and safety rules.
    • The statute defines manufactured housing as a single-family dwelling built offsite in a factory and compliant with applicable prevailing HUD standards; a manufactured home does not include a mobile home or housetrailer as defined in 15-1-101, MCA.
    • The source addresses municipal zoning and does not establish unrestricted occupancy on unzoned or county land statewide.
    “Zoning regulations adopted under this part may not treat manufactured housing or factory-built housing units differently from any other residential units.”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units in jurisdictional areas where a Montana county has established zoning regulations under MCA Title 76, chapter 2, part 2.

    • The county zoning regulations must allow at least one accessory dwelling unit by right on a lot or parcel containing a single-family dwelling.
    • The unit may be attached, detached, or internal.
    • The county may not require owner occupancy, a familial, marital, or employment relationship between occupants, or impact fees; private restrictive covenants remain possible but cannot be required as a permit, license, or use condition.
    • A county may charge up to $250 for a one-time ADU application-review fee, in addition to usual building fees.
    • Applicable building codes, fire codes, and public-health and safety regulations still apply.
    • The county may require expedited sanitation review for an ADU on a parcel with existing public water and wastewater capacity; the 15-day expedited-review provision terminates September 30, 2029.
    • The statute applies to a county that exercises zoning powers; it does not itself create county zoning where none exists.

    maximum one-time application-review fee: <= 250 USD (Usual building fees may also be required.) · expedited sanitation review: 15 days (Parcel must have existing public water and wastewater service with capacity.)

    “In jurisdictional areas where the board of county commissioners has established zoning regulations under this part, the regulations must allow a minimum of one accessory dwelling unit by right on a lot or parcel that contains a single-family dwelling.”
    One more reviewed finding on this topic
    • Allowed (with conditions) — Accessory dwelling units in Montana municipalities that exercise zoning powers under MCA Title 76, chapter 2, part 3.
      “A municipality shall adopt regulations under this chapter that allow a minimum of one accessory dwelling unit by right on a lot or parcel that contains a single-family dwelling.”
  • Well permitLimited

    New groundwater developments in Montana using 35 gallons per minute or less and no more than 10 acre-feet per year.

    • All water uses starting after June 30, 1973, require a water right either through a water-use permit or an exception to the permitting process.
    • The development may qualify for the exception; qualification is not automatic.
    • Completed groundwater uses that meet the permit exception receive a Groundwater Certificate rather than a water permit.
    • A permitted water right is required for a combined appropriation from the same source by two or more wells or developed springs exceeding 10 acre-feet, regardless of flow rate.
    • All lots in a multi-phase subdivision must share a combined water-use limit of 10 acre-feet per year to qualify for a permit exception.
    • Beginning January 1, 2026, a water user intending to develop water use through a permit exception must file a Notice of Intent with DNRC before using water from an exempt well.
    • DNRC reviews a correct and complete Notice of Intent within 10 business days; if eligible, it authorizes the Notice of Intent and gives the user five years to complete the project, put the water to use, and file a Notice of Completion.
    • If the proposed use is not eligible, the Notice of Intent is denied and the user is directed to the water-right permit process.
    • The Notice of Intent filing fee is $400.
    • An authorized Notice of Intent expires after five years, with an opportunity for one five-year extension.

    maximum flow rate: <= 35 gpm · maximum annual volume: <= 10 acre-feet per year · Notice of Intent fee: 400 USD (Beginning January 1, 2026) · Notice of Intent review period: 10 business days (For a correct and complete Notice of Intent) · authorized Notice of Intent term: 5 years (One five-year extension opportunity is available)

    “Permit Exceptions, a.k.a. Exempt Wells: Small groundwater developments that use 35 gpm or less and do not exceed 10 acre-feet per year are known as “exempt wells” and may qualify for an exception to the water permit process.”
    One more reviewed finding on this topic
    • Required — Surface-water uses and groundwater uses exceeding 35 gallons per minute or 10 acre-feet per year in Montana.
      “Water Permits: A water permit is required for all surface water use and groundwater uses over 35 gallons per minute (gpm) or 10 acre-feet per year.”
  • Agricultural exemptionAvailable

    Farm and ranch buildings in Montana’s state building-code jurisdiction.

    • The exemption is from the state building permit requirement; other county notifications, zoning, septic, floodplain, or land-use requirements may still apply.
    • The county construction-notification page requires notification for plans to erect, add to, or structurally alter buildings or property.
    “In the State's jurisdiction, state law exempts the following from the need to obtain state building permits: farm and ranch buildings”
  • 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”
  • 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;”
    One more reviewed finding on this topic
    • Limited — Dispersed and designated-campground temporary camping on legally accessible Montana state trust land administered by DNRC.
      “Dispersed camping is allowed on state trust land with the appropriate permit and with certain restrictions. Dispersed camping on state trust land is allowed with a Conservation License. Camping that is incidental to hunting or fishing is permitted through your conservation license, and no additional permitting is required. Group camping requires a special recreational use license. On leased or licensed land: 2 days On unleased/unlicensed land: 16 days within a 30-day period Within designated campground: 16 days within a 30-day period”
  • county zoning authorityGeneral

    Montana county boards of commissioners' authority to adopt zoning regulations, including in unincorporated portions of established jurisdictional areas.

    • The board of county commissioners must have adopted a growth policy pursuant to Title 76, chapter 1.
    • Zoning may be adopted for all or parts of the jurisdictional area in accordance with Title 76, chapter 2, part 2.
    • Within unincorporated portions of an established jurisdictional area, the board may establish zoning regulations by resolution or divide the county into zoning districts.
    • Zoning regulations may regulate the erection, construction, reconstruction, alteration, repair, location, or use of buildings or structures and the use of land.
    • An action challenging creation of a zoning district or adoption of zoning regulations must be commenced within 6 months after the board's order.
    • Regulations in one district may differ from those in other districts.
    • The statute also states that zoning regulations may not treat manufactured housing or factory-built housing units differently from other residential units, subject to the statutory presumption concerning placement.

    challenge period: 6 months (after the date of the board order creating the district or adopting the regulations)

    “For the purpose of promoting the public health, safety, morals, and general welfare, a board of county commissioners that has adopted a growth policy pursuant to chapter 1 is authorized to adopt zoning regulations for all or parts of the jurisdictional area in accordance with the provisions of this part.”
    One more reviewed finding on this topic
    • General — Montana county boards of commissioners adopting zoning regulations for all or parts of their jurisdictional areas, including unincorporated portions where the statutory prerequisites are met.
      “a board of county commissioners that has adopted a growth policy pursuant to chapter 1 is authorized to adopt zoning regulations”
  • county building authorityGeneral

    Montana counties may adopt and enforce building codes and require construction permits for residential construction in unincorporated county areas, subject to the statutory certification, geographic, code-content, and permit requirements.

    • A county may adopt a building code by ordinance or resolution, or authorize adoption by administrative action.
    • A county may adopt its building code on a countywide basis unless a city or town within the county has adopted a building code; the county may not enforce its county building code within that city or town.
    • The county code-enforcement program must be certified by the Montana Department of Labor and Industry.
    • The current adopted code, current fee list, and current enforcement plan must be filed with and approved by the Department.
    • Inspectors must satisfy the stated state-licensing or approved national-certification requirements.
    • Except for voluntary incentive-based energy-conservation standards, the county may not adopt or enforce a building code more stringent than the code adopted by the Department or required by state law.
    • The county may prohibit construction from commencing until the required permit is issued after compliance is shown.
    • The general construction-permit requirement applies to buildings subject to Title 50, chapter 60, parts 1 through 4.
    • State agency-owned buildings remain under state Department jurisdiction for plan review, permitting, and inspections.
    “The local legislative body of a county, city, or town may adopt a building code to apply to the county, city, or town by an ordinance or resolution, as appropriate: (a) adopting a building code; or (b) authorizing the adoption of a building code by administrative action.”
    One more reviewed finding on this topic
    • General — Montana counties' authority to adopt and enforce building codes and require building-code administration for construction in county areas, including unincorporated areas.
      “The local legislative body of a county, city, or town may adopt a building code to apply to the county, city, or town by an ordinance or resolution, as appropriate: (a) adopting a building code; or (b) authorizing the adoption of a building code by administrative action.”

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 requirements in Liberty County, Montana.
  • Minimum lot size — Minimum lot-size requirements in Liberty County, Montana.
  • Setbacks — Required building or structure setbacks in Liberty County, Montana.
  • Lot coverage — Lot coverage limits in Liberty County.
  • Building height — Building-height limits in Liberty County.
4 more unanswered
  • Camping on your land
  • Tiny homes
  • Off-grid sanitation
  • Mandatory utility hookup

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 has no county-wide zoning. Onsite septic is permitted by Liberty County Health Department (County Sanitarian). 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 Liberty County?

Living in an RV on your own land in Liberty County is limited to specific cases: Statewide rule. RV, camper-trailer, and other trailer overnight use for general recreation on legally accessible Montana state trust land administered by DNRC. A Conservation License is required for dispersed camping on state trust land. RV or trailer camping must be within 50 feet of a customary access point; motorized vehicles must be parked within 50 feet of a customary access point, and the camper or trailer may not be set up farther away by driving beyond that point. Confirm with the county before relying on it.

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.

How Liberty compares in Montana

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