Zoning, building permits and septic rules in Iona, Idaho

Iona’s own rules

• Building permitRequired

  Construction, additions, remodeling and electrical, mechanical or plumbing work inside Iona city limits

  • The city page lists these as examples of projects that need a building permit; the page does not list exceptions.
  • Building forms are submitted by email to [email protected] or in person at the city office, Monday-Thursday 9:00am-5:00pm.

  “a building permit is required for projects such as new construction, additions, remodeling, and work on electrical, mechanical, and plumbing systems.”

  2 more reviewed findings on this topic

  • Not required — Detached accessory buildings under 200 square feet inside Iona city limits

    “accessory buildings fewer than 200 sq. feet do not require a building permit; however, there are setback requirements (required distances from property lines) you need to be mindful of.”

  • Required — Detached accessory buildings over 200 square feet inside Iona city limits

    “accessory buildings greater than 200 sq. feet do require a building permit and shall not be located closer than five (5) feet from any side or rear property line.”

• Local zoningPresent (with conditions)

  Land inside Iona city limits: the city administers a zone-based system (a zoning map with zone districts)

  • The city's accessory-building page says projects must meet the requirements of the zone where the property is located.
  • The zoning ordinance text itself was not located or opened; the city code page states its documents are unofficial and that the official version must be requested from the city clerk's office.

  “in addition to meeting the requirements of the zone where the property is located, a set of professional drawings to scale must be submitted with your permit application”

• Zoning districtsPublished

  Zoning map for land inside Iona city limits

  • The map is published as a downloadable PDF; the district list and district standards were not extracted in this run.

  “zoning map downloadable pdf of zoning map”

• SetbacksSpecified

  Detached accessory buildings (outbuildings) inside Iona city limits; not principal-building setbacks

  • Accessory buildings may not be located in any required front yard area or closer to the street than the front face setback line.
  • Accessory buildings under 200 sq. ft.: at least 10 feet from any residential structure.
  • The page warns that subdivision covenants may impose larger setbacks; it names Homer Estates as requiring 20 feet from all property lines.
  • Principal-building setbacks for the residential district were not extracted.

  accessory building side or rear setback (under 200 sq ft): >= 3 feet · accessory building side or rear setback (over 200 sq ft): >= 5 feet

  “they shall not be located closer than three (3) feet from any side or rear property line, and at least (10) feet from any residential structure)”

• Lot coverageDistrict specific (with conditions)

  Combined floor area of house, garage, carport, covered patio and accessory structures on a lot inside Iona city limits, in certain zones

  • The city page says only that certain areas within town do not allow the combined floor area to exceed the limit; which zones are not named on the page.
  • Check the zoning of the property with the city office before building.

  combined floor area as share of lot surface area: <= 50 percent (applies only in certain zones; not identified on the page)

  “it's important to check with the city office on the zoning of your property as certain areas within town do not allow your combined floor space area of the primary residence, garage, car port, covered patio area, and accessory structure to exceed fifty percent (50%) of the total surface area of the lot.”

• Permit processPartial

  Building permit application process inside Iona city limits

  • The page lists forms and a contact but no review timelines or full step list.
  • Questions go to the building inspector at 208-716-4545 or [email protected].

  “please fill out the applicable building forms and email them to [email protected] or bring it into the city office, monday-thursday 9:00am-5:00pm.”

Rules another office applies inside Iona

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

• Who permits septicLocal (with conditions)

  Septic systems on land inside Iona city limits; Eastern Idaho Public Health processes the permit for Bonneville County properties

  • The packet's office table lists Bonneville & Clark counties under the Idaho Falls environmental health office, which serves this area.
  • Iona city's own pages do not address septic; this is the health district's packet, not a city rule.

  “below is a checklist of items that need to be provided to eastern idaho public health (eiph) in order to process a septic permit application.”

• Septic permitRequired

  New and replacement septic systems on land inside Iona city limits (Bonneville County service area of EIPH)

  • Plot plan and building plans are required with the application; the permit is valid for two years.
  • The septic permit is also required before a building permit is issued by planning and zoning.

  individual system permit fee: 900 USD (fee listed on the EIPH packet; check for later revisions)

  “the septic permit will be required to get a building permit from planning and zoning.”

• Septic inspectionRequired

  Septic tank and drainfield installed on land inside Iona city limits (Bonneville County service area of EIPH)

  • Final inspection by an environmental health specialist is needed before the system is covered; EIPH asks for 48 hours' notice.

  “septic systems (tank and drainfield) must be inspected prior to covering.”

Still unanswered

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

• Owner-builder exemption — Owner-builder exemption for residential construction inside Iona city limits
• Building code adopted — Building code edition adopted for construction inside Iona city limits
• Inspections — Building inspections for construction inside Iona city limits
• Certificate of occupancy — Certificate of occupancy for new buildings inside Iona city limits
• Minimum dwelling size — Minimum dwelling size for single-family homes inside Iona city limits

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.