Bolthole Index

Camas County, Idaho

Building permits, zoning and septic rules in Camas County, Idaho

59Index Score / 100
#25 of 44 in Idaho

Camas County, Idaho requires a building permit for every dwelling, regardless of size1. The county also has a zoning ordinance and zoning map administered by Planning and Zoning2. South Central Public Health District, rather than the county, handles septic permits3.

At a glance

Building permit
Required for every dwelling regardless of size; exceptions may apply where the building code exempts a permit1
Zoning
County-wide, with a zoning ordinance, zoning map and districts administered by Planning and Zoning24
Septic permit
Issued by South Central Public Health District, not the county56
Septic soils
0% of the county's soils show no severe limitations for a conventional drain field7
RV occupancy
RV parks are conditional uses in specified agricultural districts; a single RV residence remains unconfirmed8
Owner-builder exemption
Not confirmed; ask the Camas County Building Department before relying on one9
Well drilling
Requires an IDWR drilling permit and a licensed driller before you drill10
State highway driveway access
An ITD encroachment permit is required before building a driveway or approach onto a state highway11

Who to call

Building permits

Camas County Building Department

Building permits, inspections, demolition and temporary building permits for Camas County

(208) 764-1455

[email protected]

517 Soldier Road, P.O. Box 430, Fairfield, ID 83327

Zoning

Camas County Planning and Zoning Office

Zoning permits, the zoning ordinance and map, conditional use permits and subdivision review for Camas County

208-764-2046

[email protected]

517 Soldier Road, P.O. Box 430, Fairfield, ID 83327

Health department

South Central Public Health District - Environmental Health (Septic)

Septic system permitting, site evaluations and septic records for Camas County, since South Central Public Health District administers Idaho's septic rules for the county

[email protected]

Online permits →

Roads & driveways

Camas County Road and Bridge Department

County roads, bridges and winter maintenance for Camas County

208-764-2271

[email protected]

120 Willow Avenue West, P.O. Box 430, Fairfield, ID 83327

Contact details are copied from each office’s official page and were checked against it on September 27, 2026.

Do you need a building permit in Camas County, Idaho?

Yes. Camas County requires a building permit for every dwelling, no matter its size1. The permit requirement also reaches regulated buildings, structures, new land uses, changes of land use and structural alterations, although an exception may apply when the building code exempts the work from a permit1. Starting work before a required permit is issued may bring an additional fee set by the building official1. Idaho has adopted statewide building codes with state amendments, including the International Building Code and Residential Code12. Electrical, plumbing and HVAC work subject to Idaho's state-administered program requires separate trade permits; local jurisdictions may administer some programs, so confirm the correct issuer for the parcel before applying13.

Who is the Camas County Building Department, and how do you reach them?

The Camas County Building Department is the first stop for building permits and inspections14. Reach the Building Department at (208) 764-1455 or [email protected], or visit 517 Soldier Road, P.O. Box 430, Fairfield, ID 8332714. The Camas County Planning and Zoning Office handles zoning questions, the zoning ordinance and map, conditional-use applications and subdivision review4. Reach Planning and Zoning at 208-764-2046 or [email protected] at the same Fairfield address4. A proposal to divide land in unincorporated Camas County generally must be submitted to the Board for approval, except in the City of Fairfield Area of Impact and where Idaho law provides an exception15.

Does Camas County have zoning?

Yes. Camas County maintains a zoning ordinance and zoning map with districts administered by the Planning and Zoning Office2. Campgrounds and RV parks are conditional uses in the county's agricultural and agricultural-transition districts, so those uses need conditional-use approval and may receive added conditions for sanitation, landscaping, recreation facilities, density, maintenance and parking8. Camas County regulates subdivisions in unincorporated areas outside the City of Fairfield Area of Impact, subject to exceptions in Idaho law15. The reviewed county material does not establish a general minimum dwelling size, an accessory-dwelling rule, or a blanket agricultural-building exemption; ask Planning and Zoning about the parcel's district and ask the Building Department about the proposed structure29. The county also warns that building-permit approval does not promise county snow removal to the property4.

How do septic permits work in Camas County?

South Central Public Health District handles septic permitting for Camas County3. Idaho DEQ sets the statewide onsite-wastewater rules, while Idaho's public health districts administer those rules under an agreement with DEQ16. Camas County's soil data deserves early attention: 0% of mapped soils are rated without severe limitations for a conventional septic drain field, so obtain a site evaluation before fixing the house location or relying on a conventional system7. No system may receive wastewater until the required final installation inspection occurs; when preparation is required, the applicant or permittee must give at least 48 hours' notice, excluding weekends and holidays17. A septic permit may be denied where public or central wastewater treatment is reasonably accessible, though Idaho does not impose a universal connection mandate on every property18. Send septic and land questions to [email protected]6.

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

We could not confirm that a single RV may be occupied as a residence on private land in Camas County; ask Planning and Zoning before placing or occupying one2. The zoning ordinance defines a travel-trailer park as a site with at least 2 travel trailers maintained for dwelling purposes on a temporary basis, and RV parks are conditional uses in specified agricultural districts, but that rule does not answer the single-RV question8. We also could not confirm a county rule allowing tiny-home occupancy or setting a minimum dwelling size2. Every dwelling requires a building permit regardless of size, so a small footprint does not avoid the county permit requirement1. For a manufactured home in an area without an approved local building program, Idaho requires the new-home installation permit before work and requires inspection and approval before occupancy1920.

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

  1. Ask Camas County Planning and Zoning to identify the parcel's zoning district and applicable land-use standards24.
  2. Contact South Central Public Health District for the septic evaluation and permit before fixing the building site; 0% of mapped county soils rate without severe limits for a conventional drain field37.
  3. Apply to the Camas County Building Department because every dwelling needs a building permit regardless of size114.
  4. Obtain the required electrical, plumbing and HVAC permits from the authority that administers each trade program at the property13.
  5. Obtain an IDWR drilling permit and use an IDWR-licensed driller before constructing a well10.
  6. If the driveway enters a state highway, obtain an Idaho Transportation Department encroachment permit before building the approach11.
  7. Confirm winter road maintenance separately because county building approval does not guarantee county snow removal4.

What to check before you buy land in Camas County

Start with septic feasibility: 0% of Camas County's mapped soils rate without severe limits for a conventional drain field, so get the health district's site evaluation before committing to a house location76. About 44% of county land has a slope of 15% or less, and 30.1% is wooded, making parcel-level topography and clearing important checks2122. Federal land covers 64.6% of Camas County, so verify that legal and practical access to the parcel does not depend on an assumed route across public land23. Camas County has 1.1 people per square mile, and the nearest city of 100,000 or more is about 71 miles from the county center2425. Typical home value is about $393,808, farmland value averages about $2,055 per acre, and the median annual property-tax bill is about $1,050 at an effective rate near 0.4%26272829. Check winter road service separately because county building approval does not guarantee snow removal4.

Watch-outs

  • Camas County's Planning and Zoning page warns that an approved building permit for new construction does not mean the county will provide snow removal to your property; confirm winter road maintenance separately using the county's winter maintenance map4.
  • We could not confirm a general owner-builder exemption in Camas County; ask the Building Department before assuming owner-performed work avoids permits or inspections914.
  • Camas County's soils are unusually poor for conventional septic; treat a septic evaluation from South Central Public Health District as a due-diligence step before you make an offer, not after76.

Sources

  1. Planning and Zoning – Camas County, Idaho, quoted and re-checked
  2. Camas County Planning and Zoning (2026 county census)
  3. Health Inspections — South Central Public Health District, quoted and re-checked
  4. Camas County Planning and Zoning Office (camascounty.id.gov)
  5. South Central Public Health District - Health Inspections and Septic Records (2026 county census)
  6. South Central Public Health District - Environmental Health (Septic) (phd5.idaho.gov)
  7. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  8. Camas County Zoning Ordinance, quoted and re-checked
  9. (2026 county census)
  10. Wells Overview (Idaho statewide rule), quoted and re-checked
  11. Types of Right-of-Way Encroachment Permits (Idaho statewide rule), quoted and re-checked
  12. Idaho Adopted Codes (Idaho statewide rule), quoted and re-checked
  13. Frequently Asked Questions (FAQs) - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
  14. Camas County Building Department (camascounty.id.gov)
  15. Subdivision Ordinance, quoted and re-checked
  16. Septic and Septage (Idaho statewide rule), quoted and re-checked
  17. IDAPA 58.01.03 Individual/Subsurface Sewage Disposal Rules (Idaho statewide rule), quoted and re-checked
  18. IDAPA 58.01.03 Individual/Subsurface Sewage Disposal Rules (Idaho statewide rule), quoted and re-checked
  19. Building Archives - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
  20. Building Archives - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
  21. Share of land at 15% slope or less: Bolthole Index county data
  22. Wooded share of land: Bolthole Index county data
  23. Federal land share: Bolthole Index county data
  24. Population density: Bolthole Index county data
  25. Distance to the nearest metro area: Bolthole Index county data
  26. Typical home value (Zillow): Bolthole Index county data
  27. Farmland value per acre (USDA census): Bolthole Index county data
  28. Median property tax bill: Bolthole Index county data
  29. Effective property tax rate: Bolthole Index county data

Written September 27, 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

Camas County in Idaho

59
County map
Camas County highlighted among the Idaho counties · colored by Index score

How Camas County scores

Seclusion83100% ev.
Self-Sufficiency36100% ev.
Admin Boringness3890% ev.
Durability39100% ev.
Property Autonomy90100% ev.
Carry Cost8096% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$394kTypical home
0.4%Property tax
$2,055Land / acre
22.6"Annual rain
14.1% of yrsSevere drought
1 / yr (+1)Mid-century 100°F days
31.8 daysMid-century dry spell
1.49" (+5.5%)Mid-century 1-day rain
1.17×Wildfire change factor
100%Forward climate coverage
$1,364Home insurance / yr
2.8% / yrInsurance growth
2.4%Nonrenewal rate
single ZIP shrunk to state medianInsurance basis
1,160Radius comparison (15 mi)
1.1People / sq mi
64.6%Federal land
44%Land at 15% slope or less
0%Septic soil without severe limits
165 acWorkable land screen
30.1%Wooded land
36.6 tonsBiomass / forest ac
41.7°FAvg temp

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Answers from the rulebook for Camas County

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

Camas County rules

  • Building permitRequired

    Buildings, structures, land-use establishment or change, and structural alterations regulated by the county ordinance.

    • Exceptions may apply when exempted from a permit by the International Building Code.
    • Work begun before required permits may incur an additional fee established by the building official.
    “ALL DWELLINGS REQUIRE A BUILDING PERMIT NO MATTER THE SIZE.”
  • Living in an RVTemporary only (with conditions)

    Campgrounds and RV parks in Camas County A-80 Agricultural, A-40 Agricultural, and AT Agricultural Transition districts.

    • Campgrounds and RV parks are listed as conditional uses and require conditional-use approval.
    • The proposed use must be determined appropriate for the location and must not adversely affect adjoining developed land.
    • Approval may impose special or additional sanitation facilities, landscaping, developed recreation facilities, reduced density, maintenance standards, and parking.
    • The ordinance defines a travel-trailer park as a site with two or more travel trailers maintained for dwelling purposes on a temporary basis and equipped with sanitary facilities; the Board may require other public-convenience items.
    • Other provisions of Title 2 apply.
    • The ordinance identifies itself as Ordinance #169, adopted December 27, 2016, published December 28, 2016, and revised 2023.

    minimum travel trailers for a travel-trailer park: >= 2 trailers · occupancy duration: temporary basis

    “maintained for dwelling purposes on a temporary basis [...] Campgrounds and RV Parks”
  • Who permits septicLocal

    Septic permitting and installer licensing for Camas County within the South Central Public Health District service area.

    • The district serves Camas County as part of its multi-county jurisdiction.
    “South Central Public Health District serves Blaine, Camas, Cassia, Gooding, Jerome, Lincoln, Minidoka, and Twin Falls counties.”
  • Subdividing landRegulated (with conditions)

    Subdivision of land in unincorporated Camas County, except the City of Fairfield Area of Impact and applicable Idaho Code exceptions.

    • All subdivisions must be submitted for Board approval and comply with the regulations.
    • The administrator processes subdivision applications.
    • The more restrictive requirement applies where regulations conflict.
    “All subdivisions as herein defined shall be submitted for approval by the Board”
  • County-wide zoningPresent

    Camas County maintains a zoning ordinance and zoning map with districts administered by the Planning and Zoning office.

    Camas County Planning and Zoning ↗Scouted from the county site, not yet independently re-checked

Idaho rules that apply here

  • Building code adoptedAdopted (with conditions)

    Building construction in Idaho subject to the Idaho Building Code Act and the Idaho Division of Occupational and Professional Licenses building-code program.

    • The adopted codes include amendments identified by Idaho; local-government application is subject to the Idaho Building Code Act.
    • The reference to the 2020 Edition is an identifier to the legislative session in which amendments were adopted.
    • Amendments can be made in any legislative cycle regardless of code cycle.
    • The cited DOPL page states that existing rules remain in effect for 2026–2027.

    International Building Code: 2018 edition, with amendments · International Residential Code: 2018 edition, parts I, II, III and IX, with Idaho amendments; collectively named Idaho Residential Code (2020 Edition) · International Energy Conservation Code: 2018 edition, with amendments; collectively named Idaho Energy Conservation Code (2020 Edition) · International Existing Building Code: 2018 edition

    “Building Codes: 2018 International Building Code, with amendments 2018 International Residential Code (parts I, II, III and IX), with Idaho amendments collectively named the Idaho Residential Code (2020 Edition) 2018 International Energy Conservation Code, with amendments collectively named the Idaho Energy Conservation Code (2020 Edition) 2018 International Existing Building Code”
  • InspectionsRequired

    All manufactured-home installations in Idaho before the manufactured home is occupied.

    • The inspection and approval are performed by DOPL or the authority having jurisdiction.
    • Inspection and approval must occur before occupancy.
    “All installations must be inspected and approved by the Idaho Division of Occupational and Professional Licenses or the authority having jurisdiction before the manufactured home is occupied.”
  • Camping on your landLimited

    Camping or parking a vehicle or trailer on Idaho Fish and Game Wildlife Management Areas and access sites separate from a WMA.

    • The restriction applies in areas posted against camping or parking.
    • Leaving an unattended camp, vehicle, or trailer for more than 48 hours is prohibited without authorization.
    • Camping or parking for more than 10 days during any 30-day period on one WMA or one separate access site is prohibited without authorization.
    • The rule permits authorization by the Commission, Director, Regional Supervisor, or designee.

    unattended duration: > 48 hours (Unless specifically authorized by the Commission, Director, Regional Supervisor, or designee.) · camping or parking duration: > 10 days during any 30-day period per WMA or separate access site (Unless specifically authorized by the Commission, Director, Regional Supervisor, or designee.)

    “camp or park a vehicle or trailer for more than ten (10) days during any thirty (30) day period”
  • Accessory dwellingsLimited

    Accessory dwelling units for Idaho DEQ wastewater-flow and septic-system sizing purposes; this claim does not establish statewide zoning permission.

    • An ADU is sized as a single-family dwelling for the cited wastewater-flow guidance.
    • An ADU may combine flows with another structure into one system.
    • Any common septic tank must be large enough to hold the required capacity from both structures.
    • Local land-use, building, and septic authorities may impose additional requirements.

    wastewater flow basis: single-family dwelling

    “Size as a single family dwelling. Can combine with another structure's flows into one system”
  • Septic inspectionRequired

    Individual and subsurface sewage disposal systems constructed or installed under Idaho’s onsite wastewater rules.

    • The Director requires one or more inspections necessary to determine compliance.
    • The permittee must uncover or make available for inspection any portion covered or concealed in violation of the rules.
    • If preparation is required, the applicant or permittee must provide at least 48 hours’ advance notice, excluding weekends and holidays.
    • For individual systems, the public health district inspects the installation.
    • Large soil absorption systems are inspected by the public health district and DEQ.

    advance inspection notice: >= 48 hours (Excludes weekends and holidays.)

    “No system may receive wastewater until the Director conducts a final installation inspection”
  • Well permitRequired

    Construction or drilling of wells in Idaho, including domestic wells.

    • Before drilling, the well owner or driller must obtain a drilling permit from IDWR.
    • All wells must be constructed by a well driller with a valid IDWR license.
    • The separate water-right permit exemption for domestic purposes does not eliminate the drilling-permit requirement.
    • For new diversions in qualifying subdivisions filed on or after July 1, 2025, a water-right permit is required in a moratorium area, critical groundwater area, or groundwater management area, except for in-home uses and watering livestock.
    • Well construction rules apply to wells and other artificial openings more than 18 vertical feet below land surface.

    well depth threshold: > 18 vertical feet below land surface (The cited well-construction rules describe covered wells and artificial openings.) · subdivision application date: >= 2025-07-01 (Applies to qualifying new diversions described in Idaho Code § 42-227(4).)

    “Prior to drilling a well, the well owner or well driller must first obtain a drilling permit from IDWR.”
  • Mandatory utility hookupConditional

    Proposed individual or subsurface sewage disposal systems where public or central wastewater treatment facilities may be available.

    • The Director may deny a septic permit when public or central wastewater treatment facilities are reasonably accessible.
    • The cited rule does not establish a universal statewide requirement to connect every property to public sewer.
    • Subsurface septic discharge remains an identified onsite disposal method.
    “Public or central wastewater treatment facilities are reasonably accessible.”
  • Driveway accessRequired

    Private and public driveways or streets connecting to Idaho state highway right-of-way.

    • An ITD encroachment permit is required for private and public approaches, including driveways and streets.
    • No activity may occur on state highway rights-of-way until the Department or a delegated local highway agency issues an approved permit, except emergency approval affecting highway operations and motorist safety may precede processing.
    • A Traffic Impact Study may be required for new or expanded development seeking direct access to a state highway when the stated thresholds are met, unless waived by the District Engineer.

    peak-hour trips for possible TIS requirement: >= 100 new trips (unless waived by the District Engineer) · daily traffic for possible TIS requirement: >= 1000 vehicles per day (unless waived by the District Engineer)

    “Encroachment permits approved by the Department are required for private and public approaches (driveways and streets), utilities and other miscellaneous encroachments.”

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 Camas County building requirements.
  • Minimum dwelling size — Minimum dwelling size in Camas County.
  • Tiny homes — Tiny-home occupancy in Camas County.
  • Off-grid sanitation — Off-grid sanitation systems in Camas County.
  • Agricultural exemption — Agricultural building or land-use exemptions in Camas County.
1 more unanswered
  • Short-term rentals

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 Camas County, Idaho

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

Camas County scores 59/100 on the Bolthole Index, a solid county profile. Its strengths: a stronger property-autonomy legal backdrop and sparse surroundings — about 1,160 people within 15 miles. Watch-outs: thin water margin (22.6″/yr rainfall) and more administrative friction around building and land use.

Do you need a building permit in Camas County, Idaho?

Camas County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by South Central Public Health District (District 5). 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 Camas County, Idaho?

Land in Camas County runs about $2,055 per acre, based on the latest county data.

What is the water situation in Camas County?

Camas County gets about 22.6" of rain a year, with severe drought in roughly 14.1% of years.

How remote is Camas County?

A typical private-land location has about 1,160 people within 15 miles and 1,239,441 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

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

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How Camas compares in Idaho

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