Accessory Residential Unit (ARU) in Unincorporated Teton County, Wyoming
VerifiedTeton County's ADU category is the Accessory Residential Unit (ARU), governed by Land Development Regulations (LDR) Section 6.1.11.B, last amended 5/4/15 — a joint Town of Jackson/Teton County LDR framework maintained at jacksontetonplan.com and also hosted on the County's own DocumentCenter. An ARU is built under the standard residential building permit (no separate ARU permit type), but is subject to LDR use-standard restrictions and, if built after 6/4/2018, a Workforce deed-restriction compliance program administered by the Teton County Housing Department.
Verified 2026-07-01 · Source
When you need this permit
- No more than 1 ARU permitted accessory to a dwelling unit
- ARU floor area is included in the maximum floor area/FAR calculation for the primary dwelling unit
- Occupancy restricted to: (a) persons employed within Teton County per Teton County Housing Authority guidelines, OR (b) family members of the principal dwelling's occupants, OR (c) intermittent nonpaying guests of the family occupying the primary Detached Single-Family Unit
- Minimum ARU rental period is 90 days
- Outside storage limited to daily-travel vehicles; other possessions (recreational/secondary vehicles, boats, construction materials, etc.) must be stored in an enclosed structure
- ARUs built after 6/4/2018 are deed-restricted as Workforce housing; ongoing compliance requires an annual Tenant Qualification Packet (Accessory Residential Unit Checklist, current Affidavit of Current Employment, Certification and Oath forms) submitted to the Teton County Housing Department
Required documents
- Req
Residential Building Permit application (standard — no separate ARU permit)
- Req
Accessory Residential Unit Checklist
Required for Tenant Qualification Packet — lease renewal, new household move-in, or Annual Requalification
- Req
2026 Affidavit of Current Employment
- Req
Certification and Oath — Tenant / Owner of Restricted Unit
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| ARU construction permit fee | No separate ARU permit fee; charged under the standard valuation-based Residential Building Permit fee schedule (ARU floor area included in total valuation) | TETON COUNTY FEE SCHEDULE 2026, Building Permit Fees section |
Review timeline
~5–20 business days
Typical estimate — confirm current times with the Unincorporated Teton County building department
Inspection process
Tips
- Renting an ARU outside the LDR-permitted occupancy/rental-period parameters can result in immediate revocation of the ARU permit and a requirement to remove sleeping quarters, cooking, and bathing facilities from the unit.
- ARUs built before 6/4/2018 are monitored under their original recorded deed restrictions; those built after 6/4/2018 are Workforce-restricted under the newer program — confirm which regime applies to a specific unit with the Housing Department.
Frequently asked questions
- Does Teton County require a separate permit for an Accessory Residential Unit (ARU)?
- No — an ARU is built under the standard residential building permit. It is, however, subject to Land Development Regulations Section 6.1.11.B use standards (occupancy, floor-area, rental-period restrictions) and, for units built after 6/4/2018, an ongoing Workforce deed-restriction compliance program administered by the Teton County Housing Department.
Sources & verification
Verified against official sources. Last reviewed 2026-07-01.
- Teton County Planning & Building Services Department — Building Division — official building department
- Teton County LDR Section 6.1.11 Accessory Uses (incl. 6.1.11.B Accessory Residential Unit)
- Teton County Planning — Accessory Residential Unit Amendment (2016)
- Compliance Resources for Accessory Residential Units (ARUs) — Teton County Housing Department
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Teton County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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