Unincorporated Bonner County, Idaho requires a Building Location Permit for structures over 400 square feet, even though the county has not adopted a structural building code12. The county regulates development location and use through zoning, while Panhandle Health District issues septic permits34. Cities in Bonner County have separate ordinances and building codes5.
At a glance
- Building permit
- Required for structures over 400 sq ft; the county has no adopted structural building code12
- Zoning
- Yes in unincorporated areas; cities apply their own rules35
- Septic
- Panhandle Health District permits subsurface sewage systems46
- Private well
- An IDWR drilling permit is required before drilling7
- RV as a dwelling
- Allowed with a Building Location Permit: 1 per lot under 1 acre, 2 per lot on 1 acre or more, each meeting residential setbacks8
- Accessory dwelling unit
- 1 per lot, up to 900 sq ft, max 2 bedrooms; must attach to the primary structure or garage on lots under 20,000 sq ft9
- Minimum lot size
- Varies by zoning district; parcel splits must meet the zone minimum and subdivision rules1011
- Vacation rental
- A Vacation Rental Permit is required in unincorporated Bonner County12
Who to call
Building permits
Bonner County Planning Department
Building Location Permits, zoning administration, accessory dwelling units, recreational-vehicle dwelling standards, shoreland and floodplain development permits, and stormwater/grading applications for unincorporated Bonner County
1500 HWY 2, Suite 208, Sandpoint, ID 83864
Zoning
Bonner County Planning Department (permit FAQ)
Official FAQ explaining what Bonner County does and does not regulate, and when a Building Location Permit is required
Zoning
Bonner County Planning Department (recreational vehicle standards)
Official standards for using a recreational vehicle or tiny house as a dwelling unit in Bonner County
Zoning
Bonner County Planning Department (accessory dwelling unit standards)
Official standards for accessory dwelling units in Bonner County
Septic permits
Panhandle Health District, Sandpoint (Bonner County) Environmental Health office
Subsurface sewage (septic) permits, records and inspections for Bonner County; a regional district covering five North Idaho counties
2101 W Pine Street, Sandpoint, ID 83864
Septic permits
Panhandle Health District (septic permit process)
Describes what the Panhandle Health District reviews before approving a septic permit
Roads & driveways
Bonner County Road & Bridge Department
Encroachment (driveway/road construction) permits, weight limits and utility permits within the right-of-way of Bonner County roads; note that roads inside the Independent Highway District are a separate agency
1500 Hwy 2 Ste. 101, Sandpoint, ID 83864
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in Bonner County, Idaho?
Bonner County has not adopted a structural building code for unincorporated land, but it still regulates where and how land is developed23. A Building Location Permit is required for structures over 400 square feet; excepted development may avoid the application, but structures covered by the county code must still meet zoning and setback rules1. The county's permit is therefore a land-use and location approval, not a structural-code review2. Idaho trade permits still apply to covered electrical, plumbing and HVAC work13. New manufactured homes in areas without an approved local building program require a state installation permit, followed by inspection and approval before occupancy1415.
Who is the Bonner County Planning Department, and how do you reach them?
Bonner County Planning Department handles Building Location Permits and land-use questions for unincorporated parcels; reach it at 1500 HWY 2, Suite 208, Sandpoint, ID 83864, 208-265-1458, or [email protected]8. The department encourages buyers and builders to ask about a specific property before proceeding16. A floodplain development permit is required for any man-made change in a designated Special Flood Hazard Area or floodway17. Cities lie outside the county Planning Department's jurisdiction and may use different ordinances and building codes, so a parcel inside city limits belongs with that city's office5.
Does Bonner County have zoning?
Yes. Bonner County regulates the location and use of development in unincorporated areas, while incorporated cities administer their own ordinances and building codes35. Use the county's public zoning and land-use map layer to identify a parcel's district before relying on a listing description18. Minimum lot size, setbacks and building-height rules vary by district; the setback tables also contain exceptions, and planned-unit developments may differ101920. A parcel below its district minimum cannot be split further, and larger parcels may be divided only when every new parcel meets the district minimum and subdivision requirements1011. Vacation rentals require a county permit in unincorporated Bonner County12.
How do septic permits work in Bonner County?
Panhandle Health District issues septic permits for Bonner County, including properties that cannot connect to public or municipal sewer421. Reach its Sandpoint office at 2101 W Pine Street, Sandpoint, ID 83864 or 208-265-638422. Every subsurface sewage disposal system requires a permit, and both applications and issued permits are valid for one year6. The district reviews the proposed location's soil and other site conditions before approval23. A public or central sewer that is reasonably accessible can lead to denial of an individual septic permit, but there is no confirmed countywide connection mandate2425. Only about 0.9% of county soils are rated without severe limits for a conventional drain field, so make septic feasibility an early contingency26. Card payments carry a 2.5% fee27.
Can you live in an RV or tiny home on your land in Bonner County?
Yes, with limits. Bonner County's own zoning code defines a "recreation vehicle" to include travel trailers, park models, truck campers, motor homes and tiny houses up to 900 square feet, and it explicitly allows a recreational vehicle to be used as a dwelling unit the same way a single-family home or accessory dwelling unit is used28. Used that way, you're limited to one RV dwelling unit per lot under 1 acre, or two per lot of 1 acre or more, each one needs its own Building Location Permit, and each must meet the same residential setbacks as a regular home28. Casual, non-commercial, temporary or occasional RV use (camping, in other words) doesn't trigger the Building Location Permit rules at all, and if you already have an open Building Location Permit for a home you're building, living on-site in an RV during construction doesn't require a separate permit28.
Building a home in Bonner County: the steps, in order
- Confirm whether the parcel is unincorporated, then identify its zoning district and the district-specific lot, setback and height rules5181920.
- Test septic feasibility with Panhandle Health District and obtain the required septic permit, or confirm whether sewer-district approval applies625.
- Obtain a well-drilling permit from IDWR before drilling a private well, and use an IDWR-licensed driller7.
- Apply to Bonner County Planning for the Building Location Permit when the proposed structure exceeds 400 square feet1.
- Secure any floodplain permit and the correct road-access approval; county roads, Independent Highway District roads and state highways have different authorities17293031.
- Arrange required state electrical, plumbing and HVAC permits13.
What to check before you buy land in Bonner County
Confirm the parcel's zoning district, legal access, septic feasibility, water plan and floodplain status before closing18296717. Bonner County is 78.3% wooded, and only about 19.6% of its land is at a slope of 15% or less, so a parcel's usable building envelope can be much smaller than its acreage suggests3233. About 50.6% of the county is federal land, making boundary and access review especially useful34. If a seller advertises subdivision potential, verify that each proposed parcel can meet the zoning-district minimum and applicable subdivision rules1011. The effective property-tax rate is about 0.4%, with a median annual bill near $1,7163536.
Watch-outs
- Bonner County has no adopted structural building code, but county zoning and Building Location Permit rules still apply, and covered electrical, plumbing and HVAC work needs state permits2113.
- Not every road in Bonner County is county-maintained: roads inside the Independent Highway District need an approach permit from IHD (208-255-8121) rather than from Bonner County Road & Bridge31.
- USDA rates only about 0.9% of Bonner County's soils as free of severe limits for a conventional septic drain field, so budget time and money for a site evaluation and a likely alternative system26.
Sources
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Panhandle Health District Septic Permits & Records, quoted and re-checked
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Panhandle Health District Septic Permits & Records, quoted and re-checked
- Idaho Department of Water Resources Wells Overview, quoted and re-checked
- Bonner County Planning Department (bonnercountyid.gov)
- Bonner County Planning Department (accessory dwelling unit standards) (bonnercountyid.gov)
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Frequently Asked Questions (FAQs) - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
- Building Archives - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
- Building Archives - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
- Bonner County Planning Department (permit FAQ) (bonnercountyid.gov)
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Panhandle Health District Septic Permits & Records, quoted and re-checked
- Panhandle Health District, Sandpoint (Bonner County) Environmental Health office (bonnercountyid.gov)
- Panhandle Health District (septic permit process) (panhandlehealthdistrict.org)
- IDAPA 58.01.03 Individual/Subsurface Sewage Disposal Rules (Idaho statewide rule), quoted and re-checked
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Panhandle Health District Septic Permits & Records, quoted and re-checked
- Bonner County Planning Department (recreational vehicle standards) (bonnercountyid.gov)
- Bonner County Planning Frequently Asked Questions, quoted and re-checked
- Types of Right-of-Way Encroachment Permits (Idaho statewide rule), quoted and re-checked
- Bonner County Road & Bridge Department (bonnercountyid.gov)
- Wooded share of land: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Federal land share: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written September 29, 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.