Bolthole Index

Golden Valley County, Montana

Building permits, zoning and land rules in Golden Valley County, Montana

53Index Score / 100
#37 of 56 in Montana

An ordinary home with fewer than five dwelling units in unincorporated Golden Valley County, Montana generally does not need a state building permit unless it serves transient guests, and the county lists no building-permit program12. Covered nonexempt projects still require Montana permits, while septic drainfields require local health-department approval23.

At a glance

Building permit
Generally not required for an ordinary home with fewer than five units; covered nonexempt work needs a state permit12
Farm and ranch buildings
Exempt from state building permits in the state's jurisdiction2
Zoning
Countywide status is not confirmed; ask the County Commissioners about the parcel4
Septic permit
A local drainfield permit is required; Central Montana Environmental Health serves the county53
RV or tiny-home living
Not confirmed for private land; ask the county and Environmental Health before occupancy45
Owner-builder exemption
No county-specific exemption was confirmed6
State-highway driveway
A new or modified approach needs an MDT permit or right-of-way agreement7

Who to call

Building permits

Montana Building Codes Program

State building permits, plan review and inspections for covered nonexempt projects under state jurisdiction

(406) 841-2056

[email protected]

301 South Park Ave., Floors 4 and 5, Helena, MT 59620

Online permits →

Septic permits

Central Montana Environmental Health

Environmental-health and sanitation services, including local drainfield permitting

406-566-2277 ext. 109

91 Third Street North, Stanford, MT 59479

Floodplain permits

Golden Valley County Floodplain Administrator

Parcel-specific floodplain questions and applications for development in designated flood-hazard areas

(406) 932-5470

[email protected]

PO Box 1256, Big Timber, MT 59011

Roads & driveways

Golden Valley County Road Department

County-road maintenance and the first county contact for access questions

406-568-2218

107 Kemp Street, Ryegate, MT 59074

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 Golden Valley County, Montana?

An ordinary residential building containing fewer than five dwelling units in unincorporated Golden Valley County generally does not need a Montana state building permit unless it serves transient guests2. Golden Valley County lists no county building-permit program, though the county does not publish an explicit declaration that every project is exempt1. Montana also exempts qualifying farm and ranch buildings and private garages or storage buildings used by the owner outside a commercial enterprise in the state's jurisdiction2. Nonexempt new construction, alterations, additions and repairs can require a state permit before work starts8. Covered projects may also need separate electrical, plumbing or mechanical permits and state inspections910. Ask the Montana Building Codes Program to classify the exact structure and use before construction11.

Who handles Golden Valley County building permits, and how do you reach them?

Golden Valley County does not list a county building department or county building-permit program, so the Montana Building Codes Program is the practical first call for a project that may be nonexempt111. The state office can be reached at (406) 841-2056 or [email protected], and its online portal accepts permit applications11. For covered state work, submit construction plans and the Building Permit/Plan Review Application; the permit follows satisfactory responses to plan-review comments and payment of fees9. The state plan-review charge is 35% of the building-permit fee, in addition to that permit fee12. The permit holder must notify the inspector when covered work is ready and provide access for required inspections9. For questions about a county road, call the Golden Valley County Road Department at 406-568-221813.

Does Golden Valley County have zoning?

Golden Valley County's countywide zoning status could not be confirmed from an official ordinance or an explicit county statement4. Montana law authorizes county commissioners to adopt zoning for all or parts of a county after adopting a growth policy, but that authority does not establish that any particular Golden Valley County parcel is zoned14. Ask the Golden Valley County Commissioners for the parcel's current land-use status and for any subdivision conditions before relying on a proposed use. The unconfirmed zoning record does not establish an RV allowance, tiny-home allowance, minimum dwelling size, setback, building-height limit or minimum lot size4. Land within Lavina or Ryegate may also be subject to municipal rules rather than the rules for unincorporated Golden Valley County. A buyer should obtain a parcel-specific answer in writing before choosing a house location or making occupancy plans.

How do septic permits work in Golden Valley County?

Central Montana Environmental Health serves Golden Valley County for environmental-health and sanitation matters, while Montana DEQ handles sanitation review for covered subdivisions515. A local health-department drainfield permit is required even when a parcel already has a Montana Certificate of Subdivision Approval163. Contact Central Montana Environmental Health at 406-566-2277 ext. 109 before fixing the house, well or wastewater location17. Montana DEQ reviews land divisions comprising less than 20 acres and certain recreational camping-vehicle or mobile-home parks regardless of parcel size for water supply, sewage disposal, solid waste and storm drainage18. Only about 25.5% of Golden Valley County soils are rated without severe limitations for a conventional septic drain field, so make the site evaluation an early purchase contingency19. The county's individual-lot application and inspection steps could not be confirmed; ask Environmental Health what site work and documentation it requires before installation5.

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

Golden Valley County's rules for RV occupancy, temporary camping and tiny-home occupancy on private land could not be confirmed, and the unresolved countywide zoning status does not answer those questions4. Ask the Golden Valley County Commissioners whether a parcel is subject to zoning, subdivision conditions, setbacks or occupancy restrictions before moving an RV or tiny home onto it. Ask Central Montana Environmental Health what wastewater approval an occupied RV or tiny home requires because local drainfield permitting still applies in Montana173. Montana's camping limits for Fish, Wildlife & Parks public-use sites do not decide what is allowed on privately owned land20. A tiny home should not automatically be treated as exempt from every permit: state building-permit treatment depends on the structure and its use, and electrical, plumbing or mechanical permits may be separate29.

Building a home in Golden Valley County: the steps, in order

  1. Ask the Golden Valley County Commissioners whether the parcel has zoning, subdivision conditions or local land-use limits because countywide zoning could not be confirmed4.
  2. Call the Floodplain Administrator at (406) 932-5470 to learn whether the site lies in a designated Special Flood Hazard Area; covered development there requires a local floodplain permit2122.
  3. Resolve legal and physical access with the Road Department for a county road; a new or modified approach onto a state highway requires an MDT permit or right-of-way agreement137.
  4. Contact Central Montana Environmental Health for the drainfield permit and site requirements, and determine whether Montana DEQ subdivision review applies1716.
  5. Ask the Montana Building Codes Program whether the proposed home is exempt and which trade permits apply112.
  6. Submit plans, answer plan-review comments, pay applicable fees and schedule inspections if the project is covered9.

What should you check before buying land in Golden Valley County?

Start with wastewater feasibility because only about 25.5% of Golden Valley County soils are rated without severe limitations for a conventional septic drain field19. About 79.8% of the county's land has a slope of 15% or less, but parcel-level terrain can still control driveway and building costs23. Golden Valley County averages about 15.1 inches of precipitation a year and has experienced severe drought in about 12% of years, so verify a lawful, practical water source before closing2425. Check the flood designation with the Floodplain Administrator and identify whether access is from a county road or state highway before committing to a building site21137. Confirm zoning, setbacks, minimum lot size, RV use, tiny-home occupancy and well requirements directly with the responsible offices because those county rules could not be confirmed45. The effective property-tax rate is about 0.5%, and the median annual property-tax bill is about $1,0382627.

Watch-outs

  • Golden Valley County lists no county building-permit program, but state rules make the answer depend on the structure, use and permitting jurisdiction; get the project classification from the Montana Building Codes Program before work begins1211.
  • A Montana Certificate of Subdivision Approval does not replace the local drainfield permit163.
  • County-road access and state-highway access follow different paths; ask the Road Department who controls the road before applying137.

Sources

  1. Golden Valley County, Montana (2026 county census)
  2. Building Permits (Montana statewide rule), quoted and re-checked
  3. Engineering Infrastructure & Subdivisions (Montana statewide rule), quoted and re-checked
  4. (2026 county census)
  5. Golden Valley County Sanitarian Services / Environmental Health (2026 county census)
  6. (2026 county census)
  7. Approach Manual for Landowners and Developers (Montana statewide rule), quoted and re-checked
  8. Montana Permit Index — Building and Construction, quoted and re-checked
  9. Building Permits (Montana statewide rule), quoted and re-checked
  10. Building Permits (Montana statewide rule), quoted and re-checked
  11. Montana Building Codes Program (bsd.dli.mt.gov)
  12. Frequently Asked Questions (Montana statewide rule), quoted and re-checked
  13. Golden Valley County Road Department (goldenvalleycountymt.org)
  14. 76-2-201. County zoning authorized, MCA (Montana statewide rule), quoted and re-checked
  15. Sanitarian Services/Environmental Health, quoted and re-checked
  16. Engineering Infrastructure & Subdivisions (Montana statewide rule), quoted and re-checked
  17. Central Montana Environmental Health (centralmontanahealthdistrict.org)
  18. Engineering Infrastructure & Subdivisions, quoted and re-checked
  19. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  20. Public Use Rules and Regulations (Montana statewide rule), quoted and re-checked
  21. Golden Valley County Floodplain Administrator (dnrc.mt.gov)
  22. Stream Permitting (Montana statewide rule), quoted and re-checked
  23. Share of land at 15% slope or less: Bolthole Index county data
  24. Annual precipitation: Bolthole Index county data
  25. Share of years in severe drought: Bolthole Index county data
  26. Effective property tax rate: Bolthole Index county data
  27. 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

Golden Valley County in Montana

53
County map
Golden Valley County highlighted among the Montana counties · colored by Index score

How Golden Valley County scores

Seclusion83100% ev.
Self-Sufficiency20100% ev.
Admin Boringness7168% ev.
Durability43100% ev.
Property Autonomy83100% ev.
Carry Cost8394% ev.

Evidence strength: 94%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$244kTypical home
0.5%Property tax
$977Land / acre
15.1"Annual rain
12% of yrsSevere drought
4.5 / yr (+4.1)Mid-century 100°F days
20.5 daysMid-century dry spell
0.97" (+4.1%)Mid-century 1-day rain
1.27×Wildfire change factor
100%Forward climate coverage
state median fallbackInsurance basis
40,207People within 2 hr
674Radius comparison (15 mi)
0.7People / sq mi
5.9%Federal land
79.8%Land at 15% slope or less
25.5%Septic soil without severe limits
188,881 acWorkable land screen
8.5%Wooded land
19.5 tonsBiomass / forest ac
44.6°FAvg temp

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Answers from the rulebook for Golden Valley County

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

Golden Valley County rules

  • Who permits septicMixed (with conditions)

    Environmental-health and sanitation services for Golden Valley County, including onsite wastewater matters.

    • Golden Valley County is served by the Central Montana Health District for environmental health services.
    • Montana DEQ administers subdivision sanitation review.
    • The county page identifies sanitation as an environmental-health service but does not specify every septic permitting or inspection function.
    “EH permits, inspects, monitors, enforces rules, and provides resources for programs regulated by the Department of Environmental Quality (DEQ), such as:”

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
    • Limited — Construction in Golden Valley County subject to Montana building-code permitting.
      “In Montana a state building permit is required prior to the start of construction for certain types of new buildings”
  • 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.”
  • Subdividing landRegulated (with conditions)

    Land divisions in Golden Valley County meeting Montana's subdivision definition, including certain divisions under 20 acres and qualifying recreational camping vehicle or mobile-home parks.

    • DEQ review is limited to sanitation facilities, including water supply, sewage disposal, solid waste disposal, and storm drainage.
    • The source states that the program reviews divisions comprising less than 20 acres and certain listed facilities regardless of parcel size.
    • The source states that local county environmental health departments are the best resource for copies of COSAs and lot layouts.

    parcel-size threshold: < 20 acres (The source also covers condominiums and recreational camping vehicle and mobile-home parks regardless of parcel size.)

    “The DEQ Subdivision Program reviews divisions of land comprising less than 20 acres, as well as condominiums”
  • 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.”
  • Permit processPublished (with conditions)

    State-administered Montana building permits for covered non-exempt construction outside certified local-government jurisdictions.

    • A state permit applies to certain new buildings and alterations, additions, and repairs.
    • Projects within the jurisdictional limits of a certified local government program are excluded from the state permit program.
    • Construction plans and a Building Permit/Plan Review Application must be submitted for review and approval.
    • The permit is issued after plan-review comments are satisfactorily answered and fees are paid.
    • Separate electrical, plumbing, and mechanical permits may be required.
    • The permit holder must notify the inspector when work is ready and provide access for required inspections.

    average plan review time: three weeks (Actual timing depends on workload, project size, and deficiencies.)

    “To obtain a state building permit, submit construction plans and a Building Permit/Plan Review Application to the Building Codes Program for review and approval.”
    One more reviewed finding on this topic
    • Partial — Building-permit process applicable to construction in Golden Valley County under Montana building-code law.
      “The plan review process begins when the plans and application are received in the office.”
  • 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 from county or local building requirements in Golden Valley County.
  • County-wide zoning — Countywide zoning in Golden Valley County.
  • Local zoning — Local zoning across Golden Valley County, including incorporated and unincorporated areas.
  • Zoning districts — Published zoning districts in Golden Valley County.
  • Minimum dwelling size — Minimum dwelling size in Golden Valley County.
14 more unanswered
  • Minimum lot size
  • 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 Golden Valley County, Montana

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

Golden Valley County scores 53/100 on the Bolthole Index, a solid county profile. Its strengths: manageable long-term carry cost and deep seclusion — about 674 people within 15 miles. Watch-outs: thin water margin (15.1″/yr rainfall).

Do you need a building permit in Golden Valley County, Montana?

Golden Valley County does not require a county building permit for a home in unincorporated areas. Onsite septic is permitted by Golden Valley County Sanitarian (Central Montana Health District). 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 Golden Valley County, Montana?

Land in Golden Valley County runs about $977 per acre, based on the latest county data.

What is the water situation in Golden Valley County?

Golden Valley County gets about 15.1" of rain a year, with severe drought in roughly 12% of years.

How remote is Golden Valley County?

A typical private-land location has about 674 people within 15 miles and 334,469 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

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

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How Golden Valley compares in Montana

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