Building permits, zoning and land rules in Teton County, Idaho

At a glance

Building permit

Required before erecting, constructing or altering any type of building¹

Zoning

County zoning applies; uses and dimensions depend on the district²

Septic

Eastern Idaho Public Health requires permits and final inspections⁵⁷

RV living

Countywide residential use is unconfirmed; special limits apply in the Victor Area of Impact⁸⁹³

Tiny home

Building work needs a permit; land-use occupancy must be confirmed with Planning and Zoning¹³

Private well

Obtain an IDWR drilling permit before drilling¹⁰

Owner-builder

Qualifying owners are exempt from contractor registration, not county permits¹¹¹²

Who to call

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

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

Yes. Teton County requires a building permit before erecting, constructing, beginning construction on or altering any type of building.¹ Applications require county forms, plans, supporting documents and the applicable fee, and a building permit expires three years after issuance unless extended.¹ The county publishes a fee estimator, but the estimate excludes impact fees and the final permit and plan-review charges are calculated after a complete application.¹³ The Building Department uses the 2018 I-Codes with county and state amendments.¹⁴ Idaho separately requires permits for electrical, plumbing and HVAC work, with the administering authority depending on project location.¹⁵ An owner working on the owner's own Idaho land may qualify for an exemption from contractor registration when there is no intent to sell within 12 months, but that exemption does not waive applicable county or trade permits and inspections.¹¹¹²

Who issues building permits in Teton County, Idaho?

The Teton County Building Department issues county building permits and checks construction against adopted codes and the Flood Control Ordinance.⁴ Contact the department at 208-776-8171 or visit 150 Courthouse Drive - Room 107 in Driggs.⁴ Before submitting construction plans, contact Teton County Planning and Zoning at (208) 776-8240 because that office handles development, zoning and land-use questions.³ Planning and Zoning determines how the proposed use fits the parcel's district rules, while the Building Department handles construction-code compliance.²⁴ The county publishes an online permit-fee estimator that excludes impact fees and is not binding, and the Building Department calculates the final charges after a complete application; payments over $5,000 must be made by certified check.¹⁶¹⁷ Planning and Zoning also lists pre-application meetings, land-use permitting and variance requests among its services.¹⁸ We could not confirm a complete general inspection schedule or certificate-of-occupancy rule, so ask the Building Department for the inspection milestones and final approval required before occupancy.⁴

Does Teton County, Idaho have zoning?

Yes. Teton County administers zoning classifications, setbacks, subdivisions, land-use permits and code enforcement.² The county's zoning map identifies a parcel's classification, while permitted uses and dimensional standards depend on the applicable district and land-use table.¹⁹ Minimum lot size, building height, setbacks, lot coverage and minimum dwelling size therefore cannot be reduced to one countywide number.²⁰ Ask Planning and Zoning for parcel-specific verification before relying on a listing description or designing a site plan.³ Subdivision development receives county review, and Eastern Idaho Public Health reviews new subdivisions for wastewater-disposal suitability.²¹ Special rules apply in the unincorporated Victor Area of Impact, which has three zones: AOI-2.5, AOI-20 and AOI-10.²² Setbacks there are 30 feet front and sides and 40 feet rear in AOI-2.5 and AOI-20, and 20 feet front and sides and 30 feet rear in AOI-10.²³ Accessory dwellings in that area are limited by parcel size, parking, setbacks and wastewater capacity.²⁴ Those standards are not countywide rules, and municipal rules may also apply inside incorporated cities.²

How do septic permits work in Teton County, Idaho?

Eastern Idaho Public Health, not the county Building Department, administers septic permits and inspections for Teton County, including inside its cities.²⁵ A valid installation permit is required to construct, modify or repair an individual or subsurface sewage-disposal system, with limited exceptions for temporary portable non-discharging systems and certain non-expanding repairs.²⁶ Portable non-discharging systems may be used only on a temporary basis, so they are not a substitute for a permitted system on a home site.²⁷ Contact the Teton County office at (208) 522-8066 or visit 820 Valley Centre Drive in Driggs.⁶ Submit the application, plot plan, building plan and fee, then arrange the onsite evaluation before issuance.²⁸ The individual-system permit fee is $900; the permit is valid for 2 years and renewal costs $50.²⁸ Final inspection is mandatory before covering the system, and Eastern Idaho Public Health requires 48 hours' notice.⁷ Only 10.3% of mapped county soils lack severe limitations for a conventional drain field, so evaluate wastewater feasibility early.²⁹

Can you live in an RV or tiny home in Teton County, Idaho?

We could not confirm a countywide rule authorizing long-term RV occupancy or temporary camping on private land in Teton County. Ask Planning and Zoning for the parcel-specific answer before buying land or moving an RV onto it.³ In the Victor Area of Impact, a short-term rental must be a legal residential dwelling, requires a business permit and wastewater-capacity verification, and may include camping units or RVs that the renter brings, never ones the owner supplies, within the permit's tenant limit.⁹⁸ That narrow rule does not establish general residential RV permission elsewhere. Construction or alteration of a tiny home requires a county building permit, but building-code compliance alone does not establish permission for the use or occupancy.¹² Confirm the zoning district and sanitation plan with Planning and Zoning; any onsite sewage system still needs the applicable wastewater approval.³²⁶

Building a home in Teton County, Idaho: what are the steps?

1. Use the county zoning map, then ask Teton County Planning and Zoning to confirm the parcel's district and required land-use approvals.¹⁹³

1. Submit the application, plot plan, building plan and fee to Eastern Idaho Public Health, then arrange the onsite septic evaluation.²⁸

1. If the project uses a well, obtain the IDWR drilling permit before drilling and use an IDWR-licensed driller.¹⁰

1. Submit county forms, plans and supporting documents to the Building Department; use the published fee estimator for budgeting and pay the final assessed charges before work begins.¹¹³

1. Arrange the applicable electrical, plumbing and HVAC permits through the authority administering Idaho's trade-permit program at the site.¹⁵

1. Ask the Building Department for its inspection schedule, and give Eastern Idaho Public Health 48 hours' notice for the mandatory septic inspection before covering the system.⁴⁷

What should you check before buying land in Teton County?

Confirm the zoning classification and development eligibility with Teton County Planning and Zoning before treating a parcel as buildable.¹⁹³ Test septic feasibility early because only 10.3% of mapped soils lack severe limitations for a conventional drain field.²⁹ If a private well is planned, budget for an IDWR drilling permit and a licensed driller.¹⁰ A driveway connecting to an Idaho state-highway right-of-way requires an ITD encroachment permit.³⁰ Development must conform to the county Flood Control Ordinance, although the available rule does not identify every mapped-area threshold or variance standard; ask the Building Department how it affects the site.³¹⁴ A manufactured home needs an installation permit before placement, and additions or alterations remain subject to building-code requirements.³²

Watch-outs

• Do not assume a small cabin avoids permitting: Teton County requires a permit before constructing or altering any type of building.¹
• Only 10.3% of mapped soils lack severe limitations for conventional septic drain fields, so septic feasibility can shape the buildable area.²⁹
• Long-term RV occupancy and private-land camping remain unconfirmed countywide; the Victor Area of Impact rule only addresses RVs associated with permitted short-term rentals.⁹³
• A driveway entering an Idaho state highway needs an ITD encroachment permit even after county land approvals.³⁰

Sources

1. Title 6 Teton County Building Regulations, quoted and re-checked
2. Planning & Zoning Department, quoted and re-checked
3. Teton County Planning & Zoning Department (tetoncountyidaho.gov)
4. Teton County Building Department (tetoncountyidaho.gov)
5. Septic, quoted and re-checked
6. Eastern Idaho Public Health — Teton County Office (eiph.id.gov)
7. Septic Permit Information Sheet, quoted and re-checked
8. Victor AOI LDC FINAL, quoted and re-checked
9. Victor AOI LDC FINAL, quoted and re-checked
10. Wells Overview (Idaho statewide rule), quoted and re-checked
11. Frequently Asked Questions (FAQ) - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
12. How To Purchase a Trade Permit (Idaho statewide rule), quoted and re-checked
13. Building Department, quoted and re-checked
14. Building Department, quoted and re-checked
15. Frequently Asked Questions (FAQs) - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
16. Building Department, quoted and re-checked
17. Building Department, quoted and re-checked
18. Building Department, quoted and re-checked
19. Planning & Zoning FAQs, quoted and re-checked
20. Planning & Zoning Department, quoted and re-checked
21. Planning & Zoning Department, quoted and re-checked
22. Victor Area of Impact Land Development Code, quoted and re-checked
23. Victor Area of Impact Land Development Code, quoted and re-checked
24. Victor AOI LDC FINAL, quoted and re-checked
25. Septic Permit Information Sheet, quoted and re-checked
26. Septic, quoted and re-checked
27. eiph.id.gov, quoted and re-checked
28. Septic Permit Information Sheet, quoted and re-checked
29. 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
30. Types of Right-of-Way Encroachment Permits (Idaho statewide rule), quoted and re-checked
31. Building Department, quoted and re-checked
32. Title 6 Building Regulations, 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.