Unincorporated Bannock County, Idaho requires building permits for most construction and applies county zoning to all land outside city limits12. Planning & Development Services handles county building permits and zoning; Southeastern Idaho Public Health handles septic review and permitting34. RV residence during home construction or disaster rehabilitation requires approval, separate building and zoning permits, and compliance with placement and removal deadlines5.
At a glance
- Building permit
- Required for most construction in unincorporated areas; issued by Planning & Development Services1
- Zoning
- All unincorporated land is zoned; district standards apply67
- Septic
- A permit and onsite evaluation go through Southeastern Idaho Public Health89
- RV living
- Temporary residence during home construction or disaster rehabilitation requires approval; placement, work-stoppage and removal deadlines apply5
- Owner-builder exemption
- Idaho exempts qualifying owners who work on their own land from contractor registration, but required permits and inspections still apply1011
- Lot size and setbacks
- Specified by zoning district; confirm the parcel's district and lot status1213
- Wells
- Idaho Department of Water Resources issues drilling permits statewide before any well is drilled14
- Trade permits
- Electrical, plumbing and HVAC permits come from the state Division of Building Safety, not the county315
Who to call
Building permits
Bannock County Office of Planning & Development Services
Building permits, development permits, zoning administration and inspections for Bannock County under county ordinances
5500 S. 5th Avenue, Pocatello, ID 83204
Septic permits
Southeastern Idaho Public Health - Septic Permits
Issues septic (individual/subsurface sewage disposal) permits for Bannock County under Idaho DEQ rules
Well permits
Idaho Department of Water Resources - Wells & Water Rights
Well drilling permits and water rights for property in Bannock County
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 Bannock County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Bannock County, Idaho?
Yes. Unincorporated Bannock County generally requires a building permit to construct, enlarge, alter, repair, move or demolish a building or structure, or to change its occupancy classification1. The county applies the 2018 International Building and Residential Codes along with its other listed construction codes16. Exempt work includes fences 7 feet high or less, retaining walls 4 feet or less, detached decks under 200 square feet and less than 30 inches above grade, and pools under 5,000 gallons and less than 48 inches deep17. A development permit may still be required, and a zoning or floodplain development permit may apply even when no building permit does118. In unincorporated Bannock County, applying for or using electrical service in a newly placed or built structure requires a building permit first; Building Code-exempt structures instead need a zoning permit number or, when no zoning permit is required, a waiver number1920. Idaho exempts qualifying owners who work on their own land and do not intend to sell within 12 months from contractor registration, but the exemption does not waive county permits, zoning approvals or inspections10.
Who is the Bannock County building department, and how do you reach them?
Bannock County's Office of Planning & Development Services handles county building permits, development permits, zoning review and inspections3. A complete building-permit application needs supporting documents and goes through multiple planning and building reviews; the county says the full process can take 2 to 4 weeks depending on workload21. Applications go through the county's online permitting system and include a signed application, recorded deed, site plan, building plans when required and applicable outside approvals22. Planning, zoning, development, engineering and building fees follow a schedule approved by the County Commissioners; most fees are due with the application, and fees generally become nonrefundable once processing begins23. Electrical, plumbing and HVAC permits are issued separately through Idaho's state permit program315. Inside city limits, Pocatello, McCammon and Lava Hot Springs administer their own building permits242526. Septic permitting remains with Southeastern Idaho Public Health, subject to applicable city sewer-connection rules42728.
Does Bannock County have zoning?
Yes. Land, buildings and uses in unincorporated Bannock County must follow the rules for the parcel's county zoning district unless an ordinance exception applies6. The ordinance divides the county into zoning districts shown on its official zoning map; the online map may omit recent annexations or rezones7. Minimum lot sizes and setbacks vary by district, while subdivision and lot-of-record provisions can affect a parcel1213. Land division for development is regulated under the Bannock County Subdivision Ordinance29. Site-plan review must precede building or zoning permits or a certificate of occupancy for listed uses, including residential uses30. Planning & Development Services is drafting a replacement Land Use & Development Ordinance, so confirm the current district and parcel standards before buying or designing313. Pocatello, Chubbuck, McCammon and Lava Hot Springs have their own zoning rules32333435. City zoning does not replace Southeastern Idaho Public Health septic permitting4.
How do septic and well permits work in Bannock County?
Southeastern Idaho Public Health handles local review and permitting for individual subsurface sewage-disposal systems serving Bannock County8. Adding bedrooms to a home on an existing septic system also needs written approval from Southeastern Idaho Public Health36. A septic application requires a completed and signed form, a scale plot plan, proof of ownership, the fee and an onsite evaluation; the applicant must provide test holes generally 8 to 10 feet deep, depending on soil type9. The 2026 application lists a $925 permit fee and a 2-year permit term, with a $40 renewal before expiration for 2 more years9. If public or central sewer is reasonably accessible, the district may deny an onsite-system permit and require a sewer connection37. Subdivisions using individual wells or septic systems also go to Southeastern Idaho Public Health for review38. Only 22.3% of county soils rate free of severe limits for a conventional drain field, so complete the site evaluation before relying on a standard system39. Idaho requires an IDWR drilling permit before drilling a covered well14.
Can you live in an RV or tiny home on your land in Bannock County?
In unincorporated Bannock County, the Planning Director may approve an RV with a kitchen and bathroom as a temporary residence only during permanent site-built home construction or rehabilitation after fire or another natural disaster40. The applicant needs a building permit for the permanent home and separate building and zoning permits for the temporary unit; placement must wait until the permanent home's foundation or basement walls pass inspection41. Temporary-residence permits become void if permanent-home work is suspended or abandoned for 180 days5. The RV must be vacated and removed within 12 months of temporary-residence permit issuance; the Planning and Development Council may grant one 1-year extension for delays beyond the applicant's control42. The temporary-residence provision covers manufactured houses and RVs, not every type of tiny home43. Habitable tiny homes require building permits; ask Planning & Development Services about tiny-home occupancy, minimum dwelling size or private-land camping, which we could not confirm beyond the temporary-residence provision13.
What are the steps to build a home in Bannock County?
- Ask Planning & Development Services to confirm the parcel's zoning district, allowable use, minimum lot size, setbacks and required county permits441213.
- Apply to Southeastern Idaho Public Health for the septic permit and onsite evaluation, or confirm whether reasonably accessible public or central sewer changes the plan937.
- Obtain applicable sewer, floodplain, Army Corps, canal-company or other outside approvals before completing the county submission2218.
- Submit the completed building-permit application and supporting documents, pay the fees due at application, and allow 2 to 4 weeks for county review depending on workload2123.
- Arrange electrical, plumbing and HVAC permits separately through Idaho's state program153.
- Obtain an Idaho Transportation Department encroachment permit if the driveway connects to a state highway45.
- Complete required site-plan, inspection and occupancy steps for the approved use30.
What should you check before buying land in Bannock County?
Confirm the current zoning district and allowable use with Planning & Development Services because Bannock County is drafting a replacement Land Use & Development Ordinance and its online zoning map may omit recent annexations or rezones317. Confirm that the parcel is a lawful lot before assuming it can be developed because land division for development is regulated29. Only 22.3% of Bannock County soils rate free of severe limits for a conventional septic drain field, so get an evaluation from Southeastern Idaho Public Health before relying on a standard system39. If the lot needs a well, confirm water availability and the drilling-permit process with the Idaho Department of Water Resources14. Determine whether the homesite needs a floodplain development permit even if the work is exempt from a building permit18. The median property tax bill is about $1,918 a year, with an effective rate near 0.7%4647.
Watch-outs
- Bannock County is drafting a comprehensive Land Use & Development Ordinance to replace the current zoning code, so confirm the current rule with Planning & Development Services before relying on it313.
- Electrical, plumbing and HVAC permits in Bannock County come from the Idaho Division of Building Safety, not the county building department - budget time to deal with a second permitting office315.
Sources
- Planning and Development | Bannock County, quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, quoted and re-checked
- Bannock County Office of Planning & Development Services (bannockcounty.gov)
- Planning and Development, quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, quoted and re-checked
- Septic Permits | Southeastern Idaho Public Health, quoted and re-checked
- Septic Permits, quoted and re-checked
- Contractors Archives - Division of Occupational and Professional Licenses, quoted and re-checked
- How To Purchase a Trade Permit (Idaho statewide rule), quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, quoted and re-checked
- Bannock County Permit Submittal, Review, Approval, and Expiration Policy, quoted and re-checked
- Wells Overview (Idaho statewide rule), quoted and re-checked
- Frequently Asked Questions (FAQs) - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
- Planning and Development | Bannock County, quoted and re-checked
- Planning and Development | Bannock County, quoted and re-checked
- Planning and DevelopmentO | Bannock County, quoted and re-checked
- bannockcounty.gov, quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, quoted and re-checked
- Planning and Development | Bannock County, quoted and re-checked
- Bannock County Permit Submittal, Review, Approval, and Expiration Policy, quoted and re-checked
- Bannock County Permit Submittal, Review, Approval, and Expiration Policy, quoted and re-checked
- Pocatello: 15.04.030: Permits Required (Bannock County), quoted and re-checked
- McCammon: City of McCammon Idaho Forms and Documents (Bannock County), quoted and re-checked
- Lava Hot Springs: 9-1-5: Permits Required (Bannock County), quoted and re-checked
- Pocatello: 13.16.085: Connection To Proximate Sewer Required (Bannock County), quoted and re-checked
- McCammon: Septic and Septage (Bannock County), quoted and re-checked
- Planning and Development | Bannock County, quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, quoted and re-checked
- Planning and Development | Bannock County, quoted and re-checked
- Pocatello: Pocatello, ID Code of Ordinances (Bannock County), quoted and re-checked
- Chubbuck: official source (Bannock County), quoted and re-checked
- McCammon: City of McCammon Idaho Zoning Maps (Bannock County), quoted and re-checked
- Lava Hot Springs: Ordinance 1982-2 (Bannock County), quoted and re-checked
- Building Permits FYI, quoted and re-checked
- IDAPA 58.01.03 Individual/Subsurface Sewage Disposal Rules (Idaho statewide rule), quoted and re-checked
- Planning and DevelopmentO | Bannock County, quoted and re-checked
- 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
- Bannock County Zoning Ordinance No. 1998-1, updated March 11, 2025, quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, quoted and re-checked
- Bannock County Zoning Ordinance No. 1998-1, updated March 11, 2025, quoted and re-checked
- Planning and DevelopmentO | Bannock County, quoted and re-checked
- Types of Right-of-Way Encroachment Permits (Idaho statewide rule), quoted and re-checked
- Median property tax bill: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
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.