Bolthole Index

Blaine County, Idaho

Building permits, zoning and land rules in Hailey, Idaho

Hailey, Idaho requires building-permit review for construction and many alterations; start with the city’s Community Development Department.1 Hailey sets its own zoning, while South Central Public Health District handles septic permits in Blaine County.23 Hailey’s municipal water and sewer hookup requirements can rule out private systems where mains are available under the city’s connection criteria.4

At a glance

Building permits
City review for construction and many alterations; confirm project exemptions with Community Development1
Zoning
Hailey district use matrix governs uses and bulk requirements2
Septic permits
South Central Public Health District; private wastewater also needs city approval where municipal service is unavailable35
Water and sewer
Mandatory hookup under city access, main-distance and notice criteria4
Tiny homes on wheels
Long-term use of 31 days or more; city inspection and compliance approval required6
Accessory dwellings
Allowed in listed districts, subject to administrative design review and size limits7
Floodplain development
Apply to Hailey’s Floodplain Administrator before development in special flood hazard areas8

Who to call

Building permits

Hailey Community Development — Building Services

City building-permit questions and application coordination

(208) 788-9815

115 Main Street South, Hailey, ID 83333

Planning & zoning

Hailey Community Development — Planning and Zoning

City zoning, land-use application and project-review questions

(208) 788-9815

[email protected]

115 Main Street South, Hailey, ID 83333

Septic permits

South Central Public Health District

Septic-system and land-development questions and permitting for Blaine County

(208) 788-4335

[email protected]

117 East Ash Street Bellevue, ID 83313

Online permits →

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

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

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Do you need a building permit in Hailey, ID?

Hailey’s Building Services page says a building permit is likely required for erecting, constructing, enlarging, altering, repairing, moving, improving, removing, converting or demolishing any part of a building.1 Before pricing a project, ask Community Development which exemptions and additional approvals apply to the proposed work.1

Hailey has adopted building codes, including the residential-code appendix for tiny houses and solar-ready provisions.9 Electrical, plumbing and HVAC work also require trade permits under Idaho’s permit framework; administration can vary by location, so ask which authority will issue each trade permit for the Hailey address.10

Who handles building permits and zoning questions in Hailey?

Hailey Community Development is the starting point for city building-permit questions at (208) 788-9815; City Hall is at 115 Main Street South, Hailey, ID 83333.11 For zoning and land-use application questions, contact the city’s planning team at [email protected].12 Applicants going before the Planning & Zoning Commission must discuss their application with Community Development and how to proceed with the public meeting.12

Keep wastewater questions separate: South Central Public Health District handles septic-system and land/septic permitting questions at [email protected].13 Hailey also requires a written city permit before constructing a private wastewater system where municipal wastewater is unavailable.5

Does Hailey have zoning, lot limits and setbacks?

Hailey’s district use matrix sets residential, commercial, accessory and other uses alongside district bulk requirements.2 Hailey setbacks vary by district, with additional Townsite Overlay, corner-lot, height-to-setback, flood-hazard and riparian provisions potentially applying.14 Maximum lot coverage and building height also vary by district and carry exceptions or footnotes.1516 Ask Hailey planning staff to identify the parcel’s district and applicable overlays before choosing a house footprint.12

Hailey allows accessory dwelling units in districts listed as permitted in the matrix, subject to administrative design review and supplementary requirements.7 An ADU’s floor area cannot exceed 66% of the principal building or the applicable zone/lot maximum, whichever is less, and an ADU can have no more than 2 bedrooms.7

How do septic permits and sewer connections work in Hailey?

Hailey’s connection rule covers buildings needing water or wastewater service that abut, or have permanent access to, a street, alley or right-of-way containing the relevant municipal system.4 When the applicable main is within 300 feet of any property line, the owner must connect at the owner’s expense within 180 days after official city notice and cease the alternative service or disposal method.4

Where municipal wastewater is unavailable under the city code, a private system needs a written city permit before construction and cannot be used until installation satisfies the city.5 Septic installation also needs a public health district permit; South Central Public Health District serves Blaine County and handles the site evaluation and permitting.173 Idaho’s public health district inspects individual septic installations, so arrange inspection before concealing work.18

Can you live in an RV or tiny home in Hailey?

Hailey has a specific route for tiny homes on wheels, restricted to long-term use of 31 days or longer.6 Hailey’s tiny-home-on-wheels requirements include NOAH+ compliance, local climatic standards, district setbacks, building separation distances, inspection and city compliance approval.6 The specified footprint is 100–400 square feet, but that range is not a general minimum size for every Hailey dwelling.6

We could not confirm a complete rule for ordinary RV residential occupancy or temporary camping on private land in Hailey; ask Community Development about the proposed vehicle, parcel and duration before relying on an RV while building.12 Hailey’s tiny-home-on-wheels approval should be treated as a distinct housing route because the city imposes specific standards and approval requirements.6

What are the steps for building a home in Hailey?

  1. Ask Hailey Community Development to confirm the parcel’s zoning district, intended use and applicable review route before preparing the application.212
  2. Resolve municipal water and sewer availability against Hailey’s mandatory connection criteria; where a private wastewater system is eligible, obtain city approval and coordinate septic permitting with South Central Public Health District.453
  3. If the project is in a special flood hazard area, apply to Hailey’s Floodplain Administrator before development activities; elevation, floodproofing and certification requirements may apply.8
  4. Confirm the building-permit requirements with Hailey Building Services and identify the separate electrical, plumbing and HVAC permit authorities for the address.110

What should you check before buying land in Hailey?

For land outside Hailey city limits, use the Blaine County guide for the county’s building-permit process rather than applying Hailey’s city rules.19 Inside Hailey, confirm zoning, overlays and utility availability with the city before committing to a layout or an off-grid wastewater plan.2144

A private well in Idaho requires an IDWR drilling permit and a licensed well driller; the domestic water-right permit exemption does not remove the drilling-permit requirement.20 Hailey’s municipal water connection rule still applies where the city’s access, main-distance and notice criteria are met.4 For access using state highway right-of-way beyond regular travel, Idaho Transportation Department requires a right-of-way permit; ask Hailey Community Development to direct city driveway questions to the responsible office.2112

Watch-outs

  • Hailey tiny homes on wheels are restricted to long-term use of 31 days or longer, so do not plan on using that approval for short stays.6
  • Hailey’s municipal water and sewer connection criteria can require abandoning a private service or disposal method after official notice.4
  • We could not confirm a Hailey owner-builder exemption from building permits; ask Community Development before treating personal construction work as exempt.11

Sources

  1. Building Services (Hailey), quoted and re-checked
  2. Hailey, ID Code of Ordinances (Hailey), quoted and re-checked
  3. phd5.idaho.gov, quoted and re-checked
  4. 13.04.030: Mandatory Hookup to Municipal Water and Wastewater Systems (Hailey), quoted and re-checked
  5. 13.04.160: Unavailability of Municipal Water and Wastewater Systems (Hailey), quoted and re-checked
  6. 17.08D.050: Occupancy Restrictions - Short Term Occupancy (Hailey), quoted and re-checked
  7. 17.05.040: District Use Matrix (Hailey), quoted and re-checked
  8. codelibrary.amlegal.com (Hailey), quoted and re-checked
  9. 15.08.010: Adoption of Codes (Hailey), quoted and re-checked
  10. Frequently Asked Questions (FAQs) - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
  11. Hailey Community Development — Building Services (haileycityhall.org)
  12. Hailey Community Development — Planning and Zoning (haileycityhall.org)
  13. South Central Public Health District (phd5.idaho.gov)
  14. 17.05.040: District Use Matrix (Hailey), quoted and re-checked
  15. 17.05.040: District Use Matrix (Hailey), quoted and re-checked
  16. 17.05.040: District Use Matrix (Hailey), quoted and re-checked
  17. deq.idaho.gov, quoted and re-checked
  18. IDAPA 58.01.03 Individual/Subsurface Sewage Disposal Rules (Idaho statewide rule), quoted and re-checked
  19. Frequently Asked Questions - Building Services, quoted and re-checked
  20. Wells Overview (Idaho statewide rule), quoted and re-checked
  21. Right of Way Services (Idaho statewide rule), quoted and re-checked

Written October 12, 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.

Answers from the rulebook for Hailey

Hailey’s own rules

  • Building permitRequired

    Projects in Hailey involving erecting, constructing, enlarging, altering, repairing, moving, improving, removing, converting, or demolishing any part of a building.

    • The city page says a permit is likely required; project-specific exemptions or additional requirements should be checked with Community Development.
    “A building permit is likely required if your project involves erecting, constructing, enlarging, altering, repairing, moving, improving, removing, converting, or demolishing any part of a building.”
  • Building code adoptedAdopted (with conditions)

    Construction inside Hailey city limits.

    • The adopted codes are amended by the Idaho Building Code Board where stated.
    • The city also adopts IRC Appendix Q for tiny houses and Appendix T solar-ready provisions.
    “Pursuant to Idaho Code section 39-4116(1), the following codes published by the International Code Council are adopted by reference:”
  • Local zoningPresent

    Land inside Hailey city limits; Hailey administers Title 17 zoning regulations and a district use matrix.

    “The residential, public and semi-public, commercial, and accessory uses, as well as the bulk requirements for the zoning districts established in chapter 17.04 of this title are designated in the district use matrix set forth herein.”
  • Tiny homesLimited

    Tiny homes on wheels established inside Hailey city limits.

    • THOWs are restricted to long-term use of 31 days or longer.
    • The THOW must meet NOAH+ and Hailey climatic requirements, including specified insulation, vapor-retarder, window/door, and snow-load standards.
    • The THOW must meet district setbacks and building separation distances.
    • Inspection and city compliance approval are required.

    minimum long-term occupancy period: >= 31 days · THOW footprint: 100-400 square feet

    “THOWs are restricted for long-term use (thirty one (31) days or longer) only.”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units inside Hailey city limits in districts where the district use matrix marks ADUs permitted.

    • The district use matrix shows ADUs permitted in LR-1, LR-2, GR, NB, LB, TN, B, SCI-SO, and SCI-I, subject to applicable requirements.
    • ADUs are subject to administrative design review and supplementary regulations.
    • Maximum floor area is 66% of the principal building or the zone/lot maximum, whichever is less.
    • ADUs may have no more than two bedrooms.

    maximum principal-building proportion: <= 66 percent · maximum bedrooms: <= 2 bedrooms

    “The floor area of an accessory dwelling unit (ADU) is limited to no more than sixty-six percent (66%) of the gross square footage of the principal building, or the maximum floor area permitted for an ADU based on the lot size or zone, whichever is less.”
  • Off-grid sanitationLimited

    Private wastewater systems inside Hailey where municipal wastewater is unavailable under Chapter 13.04.

    • A written city permit is required before construction.
    • Plans, specifications, and other information may be required.
    • The system may not be used until installation is completed to the city's satisfaction.
    “Where the municipal water and/or wastewater system(s) are not available under the provisions of this chapter, a private water system or a private wastewater system may be installed; provided, that the system(s) comply with all the provisions of this chapter.”
  • Mandatory utility hookupWater and sewer (with conditions)

    Buildings inside Hailey city limits requiring water or wastewater service and abutting or having permanent access to a street, alley, or right-of-way containing a municipal water or wastewater system.

    • The applicable municipal main must be within three hundred feet (300') of any property line of the building to be served.
    • Connection is required within 180 days after official city notice.
    • The owner must cease using another domestic-water or wastewater-disposal method, as applicable.

    main distance: <= 300 feet (from any property line of the building to be served) · connection deadline after official notice: 180 days

    “The owner or occupant of any building, used for residential, commercial, industrial, governmental or other use that requires water or wastewater service, situated within the city which is abutting on or having a permanent right of access to any street, alley or right of way in which there is located a municipal water system or municipal wastewater system shall, if applicable, cease using any other method of domestic water service or other method of disposing of wastewater, waste or polluted water, as the case may be, and at the owner's expense shall connect his private water system to the municipal water system or his private wastewater system to the municipal wastewater system in accordance with the provisions of this chapter within one hundred eighty (180) days after official notice from the city to do so; provided, however, that the water main or wastewater main, as the case may be, is within three hundred feet (300') of any property line of the building to be served.”
  • Building in a floodplainRequired

    Development and building-permit work within Hailey special flood hazard areas.

    • The Floodplain Administrator reviews floodplain development applications and issues permits for proposed development within special flood hazard areas outside the floodway.
    • Elevation, floodproofing, foundation, and final as-built certification requirements may apply.
    • Certain RVs, temporary structures, and accessory structures under 200 square feet may be exempt from specified certification requirements.
    “Application for a floodplain development permit shall be made to the Floodplain Administrator prior to any development activities located within special flood hazard areas.”
  • Short-term rentalsLimited

    Short-term occupancy of ADUs and tiny homes on wheels inside Hailey city limits.

    • Where a lot has both a primary dwelling and ADU, only one dwelling may be used for short-term occupancy.
    • The other dwelling must be owner-occupied or a long-term rental of 31 days or more.
    • THOWs are restricted to long-term use of 31 days or longer.

    long-term occupancy threshold: >= 31 days

    “Where a lot contains both a primary dwelling unit and an accessory dwelling unit (ADU), only one dwelling unit shall be utilized for short-term occupancy; and”

Rules another office applies inside Hailey

Hailey does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • SetbacksSpecified

    Hailey zoning districts including LR-1, LR-2, GR, and RGB.

    • The matrix gives front, side, and rear yard setbacks by district.
    • Additional Townsite Overlay, height-to-setback, corner-lot, flood-hazard, and riparian provisions may apply.
    “Setbacks | Minimum front yard setback (feet) | 20 | 25 14 | 25 | 20 14, | 10 | 20 14 | 20 14 | 0 14 | 10 | 20 | See note 4 | 10 | 10”
  • Lot coverageSpecified

    Hailey zoning districts including LR-1, LR-2, GR, and TN.

    • The matrix gives total maximum coverage by district.
    • The matrix contains district-specific exceptions and footnotes.
    “Total lot coverage | Total maximum coverage by all structures (percentage) | - | 40 14 | 40 | 40 14 | - | -14 | 30 14 | - | 75 | 75 | See note 4 | 70 | 70”
  • Building heightSpecified

    Hailey zoning districts including LR-1, LR-2, GR, and RGB.

    • The matrix lists maximum building height by district.
    • Flood-hazard-area height measurement and caps apply as stated in note 17.
    “Building height | Maximum building height (feet) | 35 17 | 30 14 , 17 | 30 17 | 35 14, 17 | 30 17 | 35 14, 17 | 35 14 | 35 14, 17 | 35 17 | 35 | See note 4 | 35 | 35 17”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Hailey or Blaine County directly.

  • Owner-builder exemption — Owner-builders performing construction inside Hailey city limits.
  • Minimum dwelling size — Principal single-family dwellings in Hailey residential districts.
  • Living in an RV — Occupancy of recreational vehicles as dwellings or long-term residences inside Hailey city limits.
  • Camping on your land — Temporary camping on private land inside Hailey city limits.
  • Manufactured homes — Manufactured homes used as dwellings inside Hailey city limits.
3 more unanswered
  • Septic inspection
  • Agricultural exemption
  • Driveway access

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.

Unanswered questions are usually a sign that Hailey publishes no rule on the point, not that none exists. Blaine County’s page lists the county offices to call.

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