Bolthole Index

Nez Perce County, Idaho

Building permits, zoning and land rules in Nez Perce County, Idaho

71Index Score / 100
#7 of 44 in Idaho

Nez Perce County, Idaho requires building permits for new homes, remodels, additions, manufactured-home placement, accessory buildings and agricultural buildings.1 County Building Services enforces the 2018 International Building Code, while county zoning sets parcel-specific standards outside city limits.23 Septic permits, which the county building department does not issue, come from Public Health - Idaho North Central District under state rules.45

At a glance

Building permit
Required for new construction, home alterations, manufactured homes, accessory buildings and agricultural buildings1
Building code
County Building Services enforces the 2018 International Building Code2
Zoning
Yes; district rules control lot size, setbacks, coverage and height6
Septic
Permit, site evaluation and inspection through Public Health - Idaho North Central District457
RV living
A hardship RV is a conditional use, renewable annually while the qualifying hardship continues8
Owner-builder
Conditional contractor-registration exemptions cover work on personal residential property and work contracted to a registered contractor910
Wells
A drilling permit and an IDWR-licensed driller are required11
Minimum home size
Not confirmed; ask Planning and Building for the parcel's standard12

Who to call

Building permits

Nez Perce County Planning and Building - Building Services

County building permits, applications and building-code questions

208-799-3197

Courthouse, 3rd Floor, 1230 Main Street, Lewiston, ID 83501

Zoning

Nez Perce County Planning and Building

Land-use applications, conditional uses, subdivisions, variances and zone changes

208-799-3089

chelsem@co.nezperce.id.us

Courthouse, 3rd Floor, 1230 Main Street, Lewiston, ID 83501

Septic permits

Public Health - Idaho North Central District

Onsite sewage site evaluations, permits and inspections

208-799-3100

215 10th Street, Lewiston, ID 83501

Floodplain permits

Nez Perce County Floodplain Administrator

Floodplain development forms and permit questions

208-799-3197

Courthouse, 3rd Floor, 1230 Main Street, Lewiston, ID 83501

Roads & driveways

Nez Perce County Road and Bridge Department

County road approach and utility encroachment permits

208-799-3060

3215 E. Main Street, Lewiston, ID 83501

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Off-grid gear

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

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Do you need a building permit in Nez Perce County, Idaho?

Yes. Nez Perce County requires permits for new construction, home remodels and additions, manufactured-home placement, commercial structures, accessory buildings and agricultural buildings.1 Building Services checks applicable work against the 2018 International Building Code.2 Downloadable applications are available, but the county does not publish a complete review timeline or every required submittal on that page.13

Nez Perce County publishes a residential building-permit fee schedule, but the cited schedule is labeled effective 10-1-2017; ask Building Services to calculate the current charge for the specific project.14 Electrical, plumbing and HVAC work requires separate trade permits.15 Every manufactured-home installation must be inspected and approved before occupancy; ask Building Services whether county or state installation administration applies.1617

Who issues Nez Perce County building permits, and how do you reach them?

Nez Perce County Planning and Building - Building Services is the county building department.18 Call 208-799-3197 or visit 1230 Main Street in Lewiston for applications and county requirements.18 Land-use questions go to Planning and Building at 208-799-3089 or chelsem@co.nezperce.id.us.19

Bring the parcel number and a project description. Ask which packet applies, what plans are needed and which inspections will follow because the published process is only partial.13 All land divisions receive at least administrative review under the applicable city or county ordinance, so contact Planning before splitting acreage.20 For county-road access, Road and Bridge publishes an approach permit; call 208-799-3060 or visit 3215 E. Main Street in Lewiston.21

Does Nez Perce County have zoning?

Yes. Nez Perce County zoning applies outside city limits, and the county publishes an interactive map of zoning designations.36 The Agriculture zone has a 5-acre minimum lot, Rural Residential has a 1-acre minimum, and Single-Family Residential has a one-half-acre minimum.22 Rural Residential lots must be at least 100 feet wide and R-1 lots at least 83 feet wide.2324

In both RR and R-1, the road setback is at least 20 feet from the property line or 45 feet from the road centerline, whichever is greater, and the setback from other property lines is at least 5 feet.2526 Buildings in the RR and R-1 districts are capped at 35 feet.2728 Aggregate building coverage is capped at 50 percent in RR and 40 percent in R-1.2930 Confirm the parcel's district before designing.3

How do septic permits work in Nez Perce County?

Idaho DEQ sets the onsite-wastewater rules, and Public Health - Idaho North Central District administers permits, site evaluations and inspections in Nez Perce County.4 The district issues permits for all new and repaired septic systems.5 Call 208-799-3100 or visit 215 10th Street in Lewiston.31

Only 3.9% of county soils are rated without severe limitations for a conventional drain field, so evaluate septic before siting a house.32 The health district inspects an installed individual system.7 When inspection preparation is needed, provide at least 48 hours' notice, excluding weekends and holidays.33 A permit may be denied where public or central treatment is reasonably accessible, but that is not a universal connection mandate.34

Can you live in an RV or tiny home in Nez Perce County?

In unincorporated Nez Perce County, a recreational vehicle used for a qualifying family hardship requires a conditional-use permit.8 Approval lasts 1 year, may be renewed annually while the hardship continues, and requires removal when the hardship ends.8 That narrow route is not general permission for RV residence; ask Planning and Building about the parcel and proposed duration.19

Manufactured homes are permitted in multiple county districts, while a hardship manufactured home is a conditional use; placement also requires a building permit.351 Accessory apartments are permitted outright in the RR district subject to the accessory-apartment section and other code provisions, but that does not establish permission in every district.36 In a special flood-hazard area, a new tiny home must have its lowest floor and utilities elevated to the flood protection elevation, and that is a flood rule, not a general tiny-home permission37. We could not confirm a specific tiny-home rule or general minimum dwelling floor area; ask Planning and Building how the proposed unit will be classified.19

What are the steps to build a home in Nez Perce County?

  1. Confirm the parcel's zoning, allowed use, lot size, setbacks, coverage and height.6
  1. If dividing land, take the proposal to Planning for the required review.20
  1. Ask Road and Bridge about county-road access; state-highway access requires an ITD encroachment permit.2138
  1. Ask IDWR what well approval applies and use a licensed driller.11
  1. Arrange the health district's septic site evaluation and permit.395
  1. Obtain a floodplain development permit before construction or development in a special flood-hazard area.40
  1. Submit the county building application and arrange separate trade permits.1315
  1. Complete the septic and manufactured-home inspections that apply; the Floodplain Administrator may inspect floodplain work before issuing a Certificate of Compliance.71741

What should you check before buying land in Nez Perce County?

Confirm zoning before treating acreage as buildable. Published minimum lots range from one-half acre to 5 acres in the cited districts, with parcel-specific setbacks, coverage and height.22424344 A proposed land division receives at least administrative review under the applicable city or county ordinance.20

Check water, wastewater, flood exposure and legal access. R-1 zones are located where lots have central water service, while other districts and parcels can differ.45 Difficult soils make early septic evaluation valuable.32 Construction or development in a special flood-hazard area requires a permit before work begins.40 County-road approach forms come from Road and Bridge; state-highway access requires an ITD permit.2138

Watch-outs

  • Idaho's owner-builder registration exemptions do not waive Nez Perce County permits or zoning.91013
  • An owner may qualify by working on personal residential property or by contracting work on the owner's property to a registered contractor, but anti-evasion and resale conditions apply.910
  • Agricultural buildings require county permits; we could not confirm a general agricultural exemption.1
  • Hardship RV approval is not a general RV-residence permit; ask Planning and Building about other RV use.819
  • The published residential fee schedule is labeled effective 10-1-2017; ask Building Services for the current fee calculation.1418

Sources

  1. Building Permits, Nez Perce County Planning and Building, quoted and re-checked
  2. Building Permits, Nez Perce County Planning and Building, quoted and re-checked
  3. Planning and Building, Nez Perce County, quoted and re-checked
  4. Septic Systems – Public Health – Idaho North Central District, quoted and re-checked
  5. Septic Systems – Public Health – Idaho North Central District, quoted and re-checked
  6. Interactive Web Map Terms of Use, Nez Perce County, quoted and re-checked
  7. Septic and Septage - Idaho Department of Environmental Quality, quoted and re-checked
  8. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  9. Idaho Code § 54-5205 — Exemptions from registration, quoted and re-checked
  10. Idaho Code § 54-5205 — Exemptions from registration, quoted and re-checked
  11. Wells Overview, quoted and re-checked
  12. Planning and Building, Nez Perce County (2026 county census)
  13. Building Permits, Nez Perce County Planning and Building, quoted and re-checked
  14. Residential Building Permit Fee Schedule, quoted and re-checked
  15. Frequently Asked Questions (FAQs) - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
  16. Building Archives - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
  17. Building Archives - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
  18. Nez Perce County Planning and Building - Building Services (co.nezperce.id.us)
  19. Nez Perce County Planning and Building (co.nezperce.id.us)
  20. Interactive Web Map Terms of Use, Nez Perce County, quoted and re-checked
  21. Nez Perce County Road and Bridge Department (co.nezperce.id.us)
  22. Subpart B - Land Development Code (LDC), quoted and re-checked
  23. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  24. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  25. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  26. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  27. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  28. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  29. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  30. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  31. Public Health - Idaho North Central District (idahopublichealth.com)
  32. 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
  33. IDAPA 58.01.03 Individual/Subsurface Sewage Disposal Rules (Idaho statewide rule), quoted and re-checked
  34. IDAPA 58.01.03 Individual/Subsurface Sewage Disposal Rules (Idaho statewide rule), quoted and re-checked
  35. Building Permits, Nez Perce County Planning and Building, quoted and re-checked
  36. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked
  37. Sec. 104.12.020. Specific standards, quoted and re-checked
  38. Types of Right-of-Way Encroachment Permits (Idaho statewide rule), quoted and re-checked
  39. Septic Systems – Public Health – Idaho North Central District, quoted and re-checked
  40. Floodplain Development Forms, Nez Perce County Planning and Building, quoted and re-checked
  41. Floodplain Development Permit, quoted and re-checked
  42. Subpart B - Land Development Code (LDC), quoted and re-checked
  43. Subpart B - Land Development Code (LDC), quoted and re-checked
  44. Subpart B - Land Development Code (LDC), quoted and re-checked
  45. Subpart B - Land Development Code, Title 110 Zoning, quoted and re-checked

Written October 9, 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

Like all 6 of its neighbors, Nez Perce County has countywide zoning.

RuleNez Perce CountyLewis CountyLatah CountyClearwater CountyIdaho CountyBenewah CountyKootenai County
Building permitRequiredRequiredRequiredRequiredNot requiredRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsPublic HealthPublic HealthPublic HealthPublic HealthPublic HealthPanhandle Health DistrictPanhandle Health District

County locator

Nez Perce County in Idaho

71
County map
Nez Perce County highlighted among the Idaho counties · colored by Index score

How Nez Perce County scores

Seclusion65100% ev.
Self-Sufficiency49100% ev.
Admin Boringness43100% ev.
Durability64100% ev.
Property Autonomy90100% ev.
Carry Cost80100% ev.

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

$396kTypical home
0.9%Property tax
$3,156Land / acre
22.1"Annual rain
10.2% of yrsSevere drought
8.5 / yr (+6.7)Mid-century 100°F days
26.1 daysMid-century dry spell
0.87" (+6.3%)Mid-century 1-day rain
1.25×Wildfire change factor
100%Forward climate coverage
$1,283Home insurance / yr
2.3% / yrInsurance growth
1.13%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
85,412People within 2 hr
43,284Radius comparison (15 mi)
50.7People / sq mi
8%Federal land
51.1%Land at 15% slope or less
3.9%Soils rated "not limited" for septic (strict USDA rating)
21,055 acWorkable land screen
27.1%Wooded land
25.6 tonsBiomass / forest ac
49.2°FAvg temp

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Cities and towns in Nez Perce 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.

Not yet researched: Culdesac · Lapwai · Peck

Answers from the rulebook for Nez Perce County

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

Nez Perce County rules

  • Building permitRequired

    New construction, remodels, additions, manufactured-home placement, commercial structures, accessory buildings, and agricultural buildings in county-administered areas.

    • The county page states that permits are required for the listed construction categories and directs applicants to contact Building Services for county requirements.
    “Nez Perce County requires building permits for new construction, remodels and additions to homes, manufactured home placement, commercial structures, accessory buildings, agricultural buildings and more.”
    One more reviewed finding on this topic
    • Required — New construction, remodels, additions, manufactured-home placement, commercial structures, accessory buildings, and agricultural buildings in unincorporated Nez Perce County.
      “requires building permits for new construction”
  • Building code adoptedAdopted

    County building-code enforcement for construction subject to county permitting.

    • The county page identifies the applicable code as the 2018 International Building Code.

    building code: 2018 International Building Code

    “Building Services provides assistance with various building issues and ensures compliance with the 2018 International Building Code®.”
    2 more reviewed findings on this topic
    • Adopted (with conditions) — County building-code enforcement for construction requiring county building services.
      “Building Services provides assistance with various building issues and ensures compliance with the 2018 International Building Code®.”
    • Adopted (with conditions) — County building-code enforcement for the building-permit activities identified by Nez Perce County.
      “ensures compliance with the 2018 International Building Code®.”
  • InspectionsLimited

    Development within a Nez Perce County floodplain.

    • The Floodplain Administrator or representative may make reasonable inspections before issuance of a Certificate of Compliance.
    • The permit is required before work begins and expires if work does not commence within 6 months.
    “By signing and submitting this application, the Applicant gives consent to the local Floodplain Administrator or his/her representative to make reasonable inspections prior to the issuance of a Certificate of Compliance.”
  • Certificate of occupancyLimited

    Use or occupancy of development in a Nez Perce County floodplain.

    • The required document is called a Certificate of Compliance.
    • The permit will not issue until other necessary local, state, or federal permits are obtained.
    • The permit expires if no work begins within 6 months.
    “The development may not be used or occupied until a Certificate of Compliance is issued.”
  • County-wide zoningPresent (with conditions)

    County land development and zoning regulation for properties outside city limits in unincorporated Nez Perce County.

    • The county web map identifies zoning designations for properties outside city limits.
    • Specific uses may be permitted outright, administrative, or conditional under the Land Development Code.
    “administers the county's land use and development ordinances”
    One more reviewed finding on this topic
    • Present — County Land Development Code zoning districts in unincorporated Nez Perce County.
      “In an RR zone, the following uses and their accessory uses are permitted outright subject to any and all other applicable provisions of this chapter:”
  • Zoning districtsPublished (with conditions)

    County zoning districts and designations outside city limits.

    • The county web map provides zoning designations for properties outside city limits.
    • The Land Development Code contains district-specific regulations, including RR and R-1 provisions.
    “Find out zoning designations for properties outside of city limits”
    One more reviewed finding on this topic
  • Minimum lot sizeDistrict specific (with conditions)

    County zoning districts covered by the official land development code.

    • The cited district provisions differ: Agriculture zone minimum lot size is 5 acres; Rural Residential zone minimum is 1 acre; Single-Family Residential zone minimum is one-half acre.
    • Additional district-specific rules may apply.

    Agriculture zone minimum lot size: >= 5 acres · Rural Residential zone minimum lot size: >= 1 acre · Single-Family Residential zone minimum lot size: >= 0.5 acre

    “No lot shall be less than five acres. [...] No lot shall be less than one acre. [...] The minimum lot size shall not be less than one-half acre.”
    2 more reviewed findings on this topic
  • SetbacksSpecified

    R-1 zoning district in unincorporated Nez Perce County.

    • Road setback is measured from the property line or road centerline, whichever produces the greater distance.
    • Other-property-line setback is five feet.

    road setback from property line: >= 20 feet (Or 45 feet from road centerline, whichever is greater) · setback from other property lines: >= 5 feet

    “Setbacks from all roads shall be a minimum of 20 feet from the property line or 45 feet from the centerline of the road, whichever is greater. (2) Setbacks from all other property lines shall be a minimum of five feet.”
    2 more reviewed findings on this topic
    • District specific (with conditions) — Setbacks under the county land development code.
      “Setbacks from all roads shall be a minimum of 20 feet from the property line or 45 feet from the centerline of the road, whichever is greater. [...] Setbacks from all other property lines shall be a minimum of five feet.”
    • Specified — RR zoning district in unincorporated Nez Perce County.
      “Setbacks from all roads shall be a minimum of 20 feet from the property line or 45 feet from the centerline of the road, whichever is greater. (2) Setbacks from all other property lines shall be a minimum of five feet.”
  • Lot coverageDistrict specific (with conditions)

    Lot coverage under county zoning districts.

    • Agriculture zoning states no limit; Rural Residential zoning caps aggregate building square footage at 50 percent; another district provision caps it at 40 percent.
    • The applicable zoning district must be confirmed for the parcel.

    Rural Residential aggregate building coverage: <= 50 percent · Single-Family Residential aggregate building coverage: <= 40 percent

    “No limit. [...] Total aggregate square footage of buildings shall not exceed 50 percent of the total square footage of the lot. [...] Total aggregate square footage of buildings shall not exceed 40 percent of the total square footage of the lot.”
    2 more reviewed findings on this topic
  • Building heightDistrict specific (with conditions)

    Building-height limits under county zoning districts.

    • The official code provides a 35-foot maximum in the cited Rural Residential and Single-Family Residential provisions.
    • The applicable zoning district must be confirmed for the parcel.

    maximum building height: <= 35 feet (Applies to cited district provisions.)

    “Buildings shall not exceed a height of 35 feet.”
    2 more reviewed findings on this topic
  • Living in an RVLimited

    Recreational-vehicle occupancy under county zoning hardship provisions.

    • Hardship must result from a family member's condition preventing that member from living in conforming housing.
    • The conditional-use permit lasts one year and may be renewed for successive one-year periods upon annual application if the hardship still exists.
    • If approved by the North Central District Health Department, an on-site sewage disposal system may be shared by the primary dwelling and second dwelling.
    • Once the hardship ceases to exist, the unit must be removed from the site.

    conditional-use permit term: 1 year (Renewable annually while hardship continues)

    “Manufactured home or recreational vehicle for a hardship. a. Hardship shall be a result of a condition of a family member which prevents that member from living in conforming housing. b. The conditional use permit shall be for a period of one year but may be renewed for successive one-year periods upon annual application to the planning and zoning commission, upon finding the hardship still exists. c. If approved by the north central district health department, an on-site sewage disposal system may be shared by the primary dwelling and the second dwelling. d. Once the hardship ceases to exist, the unit must be taken off the site.”
    2 more reviewed findings on this topic
    • Limited — Recreational-vehicle occupancy as a hardship dwelling in county zoning districts where the land development code applies.
      “Manufactured home or recreational vehicle for a hardship. [...] The conditional use permit shall be for a period of one year, but may be renewed for successive one-year periods upon annual application to the planning and zoning commission, upon finding the hardship still exists.”
    • Limited — Recreational-vehicle occupancy in county zoning districts.
      “Manufactured home or recreational vehicle for a hardship.”
  • Tiny homesLimited

    New construction, substantial improvement, or development of tiny homes in Nez Perce County special flood hazard areas where base flood elevation data has been provided.

    • The lowest floor, including basement, and utilities including duct work must be elevated no lower than the flood protection elevation.
    • New and replacement tiny homes classified as manufactured homes must also comply with the manufactured-home elevation, anchoring, enclosure, and applicable evacuation-plan requirements in Sec. 104.12.020(3).
    • Recreational vehicles that may be used as tiny homes are subject to the separate recreational-vehicle standards in Sec. 104.12.020(5), including temporary placement for fewer than 180 consecutive days when fully licensed and ready for highway use, or permanent-placement compliance with new-construction requirements.
    • The cited rule is a floodplain-development restriction and does not establish a general countywide tiny-home occupancy authorization.
    “New construction and substantial improvement or development of any residential structure (including manufactured homes tiny homes, and park model manufactured homes) shall have the lowest floor, including basement, and utilities including duct work, elevated no lower than the flood protection elevation, as defined in section 101.01.030.”
  • Manufactured homesAllowed

    Manufactured homes in at least the RR and R-1 zoning districts.

    • All other applicable Land Development Code provisions apply.
    • A manufactured home for hardship is separately listed as a conditional use.
    “(4) Manufactured home. (5) Single-family dwelling.”
    One more reviewed finding on this topic
    • Limited — Manufactured-home occupancy under the county land development code.
      “In the R-1 zone, the following uses and their accessory uses are permitted outright subject to any and all other applicable provisions of this chapter: [...] (3) Manufactured home. [...] Manufactured home or recreational vehicle for a hardship.”
  • Accessory dwellingsLimited

    Accessory apartments in the county RR zoning district.

    • Accessory apartments are subject to section 110.16.060 and all other applicable Land Development Code provisions.
    • This claim does not establish countywide permission in every zoning district.
    “In an RR zone, the following uses and their accessory uses are permitted outright subject to any and all other applicable provisions of this chapter: (1) Accessory apartments, subject to the provisions in section 110.16.060.”
    One more reviewed finding on this topic
    • Allowed — Accessory apartments in the RR zoning district and accessory apartments in the LCI zone.
      “(1) Accessory apartments, subject to the provisions in section 110.16.060.”
  • Who permits septicMixed (with conditions)

    On-site and subsurface sewage disposal systems serving Nez Perce County within the Public Health–Idaho North Central District.

    • The health district provides permitting, site evaluations, and inspections.
    • The systems are regulated under Idaho Department of Environmental Quality rules.
    “regulated by the Idaho Dept. of Environmental Quality”
    3 more reviewed findings on this topic
    • Local (with conditions) — Onsite wastewater systems in Nez Perce County, administered by the applicable public health district.
      “Idaho’s seven public health districts administer these rules under a memorandum of understanding (MOU) with DEQ. The public health districts conduct site evaluations, issue septic system permits, inspect installations, and assist with property-specific questions about permitting, existing systems, and permit records.”
    • Local (with conditions) — Onsite wastewater systems in Nez Perce County.
      “Septic Permits are available through Public Health Idaho North Central District.”
    • Local — Public Health – Idaho North Central District services for Nez Perce County septic systems.
      “Public Health – Idaho North Central District provides the following services: On-site Sewage Disposal System”
  • Septic permitRequired

    New and repaired septic systems and installation of on-site sewage systems serving Nez Perce County.

    • The health district states that it issues permits for all new and repaired septic systems and for installation of on-site sewage systems.
    • DEQ rules apply.
    “Issue permits for all new and repaired septic systems.”
    2 more reviewed findings on this topic
  • Septic inspectionRequired

    Installed individual septic systems in Nez Perce County.

    • The public health district inspects the installed system.
    “inspected by the public health district.”
  • Mandatory utility hookupConditional

    Water service for county R-1 zoning and rezoning areas.

    • The county Land Development Code states that R-1 zones will be located where lots are served by a central water system.
    • Land Development Code utility and septic requirements may vary by zoning district and parcel.

    central water system: true (R-1 zone location policy)

    “Such zones will be located: (1) To provide opportunities for residential development near employment, shopping and city services; (2) Where land is not ideally suited for other zones; (3) Where single-family residential use is not in conflict with adjacent land uses; and (4) Where lots are served by a central water system.”
  • Subdividing landRegulated (with conditions)

    Land divisions and subdivisions in Nez Perce County, subject to the applicable city or county ordinance.

    • The county source states that cities and counties may operate under different ordinances.
    • The county subdivision ordinance requires at least administrative review of all land divisions.
    “administrative review of all land divisions.”
    2 more reviewed findings on this topic
    • Regulated (with conditions) — Land divisions and subdivisions in county jurisdiction outside incorporated municipalities.
      “Nez Perce County Subdivision Ordinance requires, at a minimum, administrative review of all land divisions.”
    • Regulated (with conditions) — Land divisions and subdivisions in Nez Perce County.
      “Nez Perce County Subdivision Ordinance requires, at a minimum, administrative review of all land divisions.”
  • Building in a floodplainRequired

    All structures and development within an area of special flood hazard, including the 100-year floodplain or A Zone.

    • A development permit must be obtained before construction or development begins.
    • The permit applies to all structures and all development, including dredging, drilling, excavation, filling, grading, mining, paving, and similar activities.
    • For residences in an A Zone, an elevation certificate may also be required before obtaining a building permit.
    • The floodplain ordinance contains additional certification and flood-protection requirements.
    “The Nez Perce County Flood Damage Reduction Ordinance #43 requires that a development permit be obtained prior to construction or development begins within any area of special flood hazard, also known as the 100-year floodplain or “A Zone” on the FEMA Flood Insurance Rate Map (FIRM). The permit is required for all structures and for all development (i.e. dredging, drilling, excavation, filling, grading, mining, paving, etc.) within any area of special flood hazard.”
    One more reviewed finding on this topic
    • Required — All structures and development in areas of special flood hazard, including the 100-year floodplain or A Zone.
      “requires that a development permit be obtained prior to construction or development begins within any area of special flood hazard”
  • Permit feesPublished

    Residential building permits and manufactured-home placement in county-administered areas.

    • The fee schedule is marked effective 10-1-2017.
    • Valuations are minimum values per square foot unless otherwise noted; the contract amount applies when higher.
    • Manufactured-home fees exclude electrical and plumbing.

    fixed living space valuation: 112.65 USD per square foot (minimum valuation unless otherwise noted) · MFH foundation and slab valuation: 18.59 USD per square foot (minimum valuation unless otherwise noted) · manufactured home in park first section: 161.87 USD (additional sections $97.71 each; electrical and plumbing excluded) · manufactured home on private lot first section: 259.59 USD (additional sections $129.69 each; electrical and plumbing excluded)

    “Effective 10-1-2017 [...] Fixed Living Space | $112.65 MFH Foundation & Slab | $18.59 [...] Valuations shown are MINIMUM values per square foot unless otherwise noted. The contract amount shall be used where it exceeds this table.”
    2 more reviewed findings on this topic
  • Permit processPartial

    County building-permit application process.

    • Downloadable applications are available and forms may also be obtained at the courthouse.
    • Applicants are directed to contact Building Services for county requirements.
    • The page does not state a complete review timeline or all required submittals.

    contact phone: 208-799-3197

    “Downloadable applications are available below.”
    One more reviewed finding on this topic
    • Published (with conditions) — County building-permit process information for listed residential, manufactured-home, commercial, accessory, agricultural, remodeling, and addition projects.
      “Downloadable applications are available below. Some applications are available in two formats - forms with fields to be filled in before printing and signing, or blank forms to print. Forms can also be picked up by visiting our office on the 3rd floor of the Courthouse located at 1230 Main Street in Lewiston, Idaho.”

Idaho rules that apply here

  • Owner-builder exemptionConditional

    Homeowners personally performing plumbing work on their own residential premises in Idaho.

    • The homeowner must own the residential property and personally perform the permitted work.
    • The homeowner permit is valid only for a primary or secondary residence and associated outbuildings.
    • Associated outbuildings must not be used for commercial purposes or rented by a tenant.
    • The homeowner must accept responsibility for all work performed.
    • All work must be inspected by the Division of Occupational and Professional Licensing.
    • A plumbing permit must be obtained by application to the Division.
    • The application must be submitted with payment.
    • The application form states that an additional $65 fee may be assessed if the location is not clearly provided by directions or an attached map.
    • The application was revised 8/17/2022; this revision date is not treated as an effective date.

    unclear-location fee: 65 USD (May be assessed if the location is not clearly given by directions or an attached map.)

    “I certify that I am the owner of the residential property and will personally perform the work covered by this permit.”
    7 more reviewed findings on this topic
    • Conditional — An owner who contracts for work to be performed by a registered contractor on the owner's own property in Idaho.
      “work to be performed by a registered contractor on his own property”
    • Conditional — An owner performing construction on the owner's personal residential real property in Idaho, whether or not the owner occupies the property.
      “owner performing construction on the owner’s personal residential real property”
    • Conditional — Owners of commercial properties, and lessees of commercial properties with the owner's consent, performing maintenance, repair, alteration, or construction work in or upon the properties in Idaho.
      “registration as provided for in this chapter shall not be required for the following, so long as such person is not acting with the intent to evade this chapter and so long as such person does not hold himself out as a registered contractor: [...] (m) Owners of commercial properties, or lessees of commercial properties with the consent of the owner, who, whether themselves or with their own employees, perform maintenance, repair, alteration or construction work in or upon the properties;”
    • Available — An owner performing their own construction work on the owner's own land in Idaho.
      “A: Any person who engages in a construction job with a dollar amount exceeding $2000.00 (materials & labor) and is not otherwise exempt (The exemptions are listed below); [...] Owners: Owners who do their own work on their own land and do not intend to sell the property within 12 months are exempt from registration.”
    • Conditional — An Idaho homeowner undertaking construction or trade work for which a state-administered permit process applies.
      “Public (Homeowners Only) [...] *Public: “Homeowner” is pre-selected. [...] Once payment is processed, you may choose “Request Inspection” and/or “Print Permit””
    • Conditional — Owners performing construction work on their own land in Idaho under the state contractor-registration system.
      “Owners who do their own work on their own land and do not intend to sell the property within 12 months are exempt from registration.”
    • Conditional — Homeowners personally performing electrical work on a primary or secondary residence and related outbuildings in Idaho.
      “Homeowners may purchase a permit only when they themselves are doing electrical work on their primary or secondary residence and/or related outbuildings.”
  • 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”
  • 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.”
    One more reviewed finding on this topic
    • Required — Construction of wells serving property in Nez Perce County under Idaho statewide well-construction authority.
      “Prior to drilling a well, the well owner or well driller must first obtain a drilling permit from IDWR. All wells must be constructed by a well driller with a valid license from IDWR.”
  • 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.”
  • Campground & park staysLimited

    Temporary camping in Idaho State Parks administered by the Idaho Department of Parks and Recreation.

    • Camping is permitted only in designated areas.
    • Stays are limited to 14 nights in a 30-day period; the same page's FAQ separately states a 15-day limit, creating an unresolved internal discrepancy.
    • Individual-site occupancy is limited to one family unit or no more than 8 persons unless otherwise specified; companion-site and site-design restrictions apply.
    • Camping is not permitted on beaches, parking lots, or day-use facilities.
    • Check-in is at 2 p.m. for campsites and checkout is at 1 p.m.; late checkouts may incur additional fees unless prior arrangements have been made.

    state-park stay limit: 14 nights in 30 days (FAQ on the same page states 15 days in any 30-day period) · individual-site people limit: <= 8 people (one family unit or site-specific limits may apply)

    “Camping is permitted only in designated areas. [...] Stays are limited to 14 nights in a 30-day period.”
  • county zoning authorityGeneral

    Idaho counties adopting zoning for unincorporated areas through their boards of county commissioners.

    • A board of county commissioners is a governing board and may exercise the powers authorized by the Local Land Use Planning Act.
    • The county board's powers under the chapter apply to the unincorporated area of the county.
    • Zoning must be adopted, amended, or repealed by ordinance using the notice and hearing procedures in Idaho Code § 67-6509.
    • Zoning districts must conform to the adopted comprehensive plan.
    • Within zoning districts, standards may regulate or restrict building height, number of stories, size, construction, reconstruction, alteration, repair or use of buildings and structures; lot occupancy; courts, yards and open spaces; population density; and building and structure location and use.
    • Standards must be uniform for each class or kind of building throughout each district, but may differ between districts.
    • Overlay zoning districts require clear and objective standards and must not constitute a regulatory taking under Idaho or federal law.
    “The powers of the board of county commissioners conferred by this chapter shall apply to the unincorporated area of the county.”
  • county building authorityGeneral

    Idaho counties' authority to adopt and enforce building codes and require permits for residential construction in unincorporated areas when the county operates a building-code enforcement program.

    • The statute defines local government as any city or county of Idaho.
    • A local government that had not previously implemented a code-enforcement program may elect to implement one by ordinance evidencing its intent to do so.
    • Construction in a local-government jurisdiction enforcing building codes requires a permit under the applicable local ordinance.
    • A local government issuing permits and performing enforcement must adopt the specified state-adopted codes and may amend them only within the limits stated in Idaho Code § 39-4116(4).
    • Local amendments must generally provide at least an equivalent level of protection; accessibility amendments are restricted, and additional residential-code amendments require the statutory good-cause, necessity, ordinance, public-hearing, publication, and notice procedures.
    • Single-family homes and multiple-family dwellings up to two units are exempt from automatic fire-sprinkler requirements in the enumerated codes.
    • Agricultural buildings must be exempted; a county may issue farm-building permits only for road setbacks and utility easements, at no more than actual issuance cost.
    • Permits are governed by the laws in effect when the application is received.
    • The state division retains jurisdiction for in-plant inspections and installation standards for manufactured or mobile homes and for in-plant inspections and enforcement of modular-building and commercial-coach construction standards.
    “"Local government" means any city or county of this state.”

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 in Nez Perce County zoning districts.
  • Off-grid sanitation — Off-grid sanitation systems in unincorporated Nez Perce County.
  • Agricultural exemption — Agricultural-building or agricultural-use exemptions from county permits or zoning.
  • Short-term rentals — Short-term rentals in unincorporated Nez Perce County.

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.

Water rights & wells in Nez Perce County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from Idaho’s water agency.

Actively managed

This basin is under active state management — new water use is scrutinized, though a domestic well is usually still allowed.

Household wellExempt — no permit or water right

Groundwater for domestic purposes up to 13,000 gpd is exempt from permitting; critical-area and moratorium closures generally target new PERMITTED (non-exempt) appropriations, so a household can still drill a domestic-exempt well even inside a critical groundwater area.

Limit: 13,000 gpd (homes, stockwater, irrigation of ≤0.5 acre) under Idaho Code 42-227

Idaho Dept of Water Resources — Domestic Exemption ↗

Prior-appropriation state (first in time, first in right). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the Idaho state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Nez Perce County, Idaho

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

Nez Perce County scores 71/100 on the Bolthole Index, a strong county profile. Its strengths: a stronger property-autonomy legal backdrop and manageable long-term carry cost.

Do you need a building permit in Nez Perce County, Idaho?

Nez Perce County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Public Health - Idaho North Central District. 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 Nez Perce County?

Living in an RV on your own land in Nez Perce County is limited to specific cases: Recreational-vehicle occupancy under county zoning hardship provisions. Hardship must result from a family member's condition preventing that member from living in conforming housing. The conditional-use permit lasts one year and may be renewed for successive one-year periods upon annual application if the hardship still exists. A tiny home is limited to specific cases. Confirm with the county before relying on it.

How much does land cost in Nez Perce County, Idaho?

Land in Nez Perce County runs about $3,156 per acre, based on the latest county data.

What is the water situation in Nez Perce County?

Nez Perce County gets about 22.1" of rain a year, with severe drought in roughly 10.2% of years. On water rights, Nez Perce County lies in the Lewiston Plateau Ground Water Management Area — Designated 2013; new appropriations require an available-water determination (Grande Ronde basalt decline). Domestic-exempt wells allowed..

How remote is Nez Perce County?

A typical private-land location has about 43,284 people within 15 miles and 535,813 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

How Nez Perce compares in Idaho

Compare side-by-side →See all 44 Idaho counties ranked →