Ammon building permits
VerifiedDepartment contacts, adopted codes, permit types, fees, and gotchas for Ammon, Idaho.
Last verified 2026-07-04 · Source · Embed this page’s badge · Version history
Building department
- Address
- 2135 South Ammon Road, Ammon, ID 83406
- Phone
- 208-612-4000
- Office hours
- Monday-Friday 7:30 AM-12:00 PM & 1:00 PM-4:30 PM (permits not accepted after 4:00 PM); Inspection hours Mon-Thu 9:00 AM-3:00 PM, Fri 9:00 AM-12:00 PM
- Website
- Official site
- Permit portal
- Apply online at Ammon's portal
Inspection guide
See how inspections work in Ammon — sequence, scheduling & re-inspection fees.
Codes adopted
Idaho adopts a statewide baseline building code set under the Idaho Building Code Act (Idaho Code Title 39, Chapter 41) and IDAPA rules administered by the Idaho Division of Occupational and Professional Licenses (DOPL). Effective January 1, 2021, the statewide baseline includes the 2018 International Building Code (IBC), 2020 Idaho Residential Code (based on the 2018 IRC Parts I–III and IX with Idaho amendments), 2020 Idaho Energy Conservation Code (based on the 2018 IECC with Idaho amendments), 2018 International Existing Building Code (IEBC), 2018 International Mechanical Code (IMC), 2018 International Fuel Gas Code (IFGC), and 2018 International Fire Code (IFC). The National Electrical Code is adopted separately by the Idaho Electrical Board (IDAPA 24.39.10), not bundled with the building code: Idaho enforces the 2023 NEC, effective July 1, 2024 (the state used the 2017 NEC with amendments before that and skipped the 2020 edition). Local jurisdictions must enforce the state baseline and may adopt amendments only where those amendments are at least as stringent as the state-adopted editions; local amendments may not be less restrictive. Enforcement is local — each city or county issues permits and performs inspections. Always confirm the current adopted edition and any local amendments with your specific jurisdiction before submitting plans.
- City of Ammon Building Department adopts codes independently by ordinance under Ammon Municipal Code Title 07 (Building Regulations); the City self-administers building, electrical, plumbing, and mechanical permitting rather than relying on the Idaho Division of Building Safety for direct administration. Source: City of Ammon Building Department page, https://www.cityofammon.us/departments/building/
- 2018 International Building Code (IBC), published by the International Code Council. Source: City of Ammon Building Department page, code link to https://codes.iccsafe.org/content/IBC2018P6
- 2018 International Residential Code (IRC) for One- and Two-Family Dwellings. Source: City of Ammon Building Department page, code link to https://codes.iccsafe.org/content/IRC2018P6
- 2018 International Existing Building Code (IEBC). Source: City of Ammon Building Department page, code link to https://codes.iccsafe.org/content/IEBC2018P5
- 2018 International Fire Code (IFC). Source: City of Ammon Building Department page, code link to https://codes.iccsafe.org/content/IFC2018P6
- 2018 International Fuel Gas Code (IFGC). Source: City of Ammon Building Department page, code link to https://codes.iccsafe.org/content/IFGC2018/index
- 2018 International Mechanical Code (IMC). Source: City of Ammon Building Department page, code link to https://codes.iccsafe.org/content/IMC2018P4
- 2018 International Energy Conservation Code (IECC). Source: City of Ammon Building Department page, code link to https://codes.iccsafe.org/content/iecc2018
- 2017 Idaho State Plumbing Code (based on the Uniform Plumbing Code, adopted statewide pursuant to Idaho Code Title 54, Chapter 26). Source: City of Ammon Building Department page
- National Electrical Code (NEC) — City of Ammon Building Department page identifies the currently adopted edition as the 2023 NEC (NFPA 70), consistent with the edition adopted statewide by Idaho pursuant to Idaho Code Section 54-1001. Electrical permits within Ammon city limits are issued and inspected by the City's own Building Department. Source: City of Ammon Building Department page, code link to https://www.nfpa.org/codes-and-standards/nfpa-70-standard-development/70
- Ammon Municipal Code Title 10, Chapter 7 (Planning and Zoning — Accessory Dwelling Units, Section 4) governs ADU standards enforced in conjunction with Building Department permitting. Source: City of Ammon ADU Regulations page, https://www.cityofammon.us/services/building-permits/adu-regulations/
- Ammon Municipal Code Section 15.04.030 establishes stop-work-order and violation-fee authority for work commenced without a required building permit. Source: City Fee Resolution 2026-008 (Resolution Number 2026-008, adopted April 16, 2026, effective April 16, 2026), Section 1-B
Permit types & fees
Residential Building Permit (New Construction)
Required for new construction of single-family dwellings and other residential structures in Ammon. Reviewed against the 2018 IRC and 2018 IECC as adopted by the City. Applications are submitted through the City's BluePrince online permitting portal.
Accessory Structure Permit (Sheds, Detached Garages, ADUs)
Required for detached accessory structures over 200 square feet, garages, and Accessory Dwelling Units (ADUs) in Ammon. Reviewed against the 2018 IRC, City of Ammon Accessory Building Checklist standards, and (for ADUs) Ammon Municipal Code Title 10, Chapter 7, Section 4.
Electrical Permit
Required for electrical installation, alteration, or repair work in Ammon, governed by the National Electrical Code as adopted by the City (2023 NEC per the City's code-adoption links). Electrical permits within city limits are issued and inspected directly by the City of Ammon Building Department.
EV Charger / EVSE Permit
Required for installation of a residential electric vehicle charging circuit in Ammon. Filed as an electrical permit through BluePrince and issued/inspected directly by the City of Ammon Building Department under the National Electrical Code (2023 NEC). The City's Fee Resolution 2026-008 electrical schedule has no EV-charger/EVSE-specific line item — a new EV charger circuit added to an existing home is billed under the 'Existing Residential (alteration)' category, which is priced per added branch circuit.
Plumbing Permit
Required for plumbing installation, alteration, or repair work in Ammon, governed by the 2017 Idaho State Plumbing Code (based on the Uniform Plumbing Code) as identified on the City's Building Department page. Plumbing permits within city limits are issued and inspected directly by the City of Ammon Building Department.
Mechanical / HVAC Permit
Required for heating, ventilation, air conditioning, and related mechanical installations in Ammon, governed by the 2018 International Mechanical Code (IMC) and 2018 International Fuel Gas Code (IFGC) as identified on the City's Building Department page. Mechanical permits within city limits are issued and inspected directly by the City of Ammon Building Department.
Re-Roofing Permit
Required for residential and commercial re-roofing in Ammon, governed by the 2018 IBC/IRC and administered through the standard building permit process via the BluePrince portal.
Solar Array (Photovoltaic) Permit
Required for installation of rooftop solar photovoltaic (solar array) systems in Ammon. The City publishes a dedicated Solar Array submittal checklist, but solar installations are processed and fee-billed through the standard Building Permit (structural/racking, valuation-based) and Electrical Permit (wiring/interconnection) pathways — the City Fee Resolution has no separate solar-specific fee line item.
New residential construction activity
New privately-owned residential construction onlyHousing units authorized by building permits for new privately-owned residential construction — this is not total permit volume (no commercial permits or remodels).
- Latest month (2026-05)
- No data reported
- Trailing 12 months
- No data reported
- Year to date
- No data reported
- Latest full year
- No data reported
Source: U.S. Census Bureau, Building Permits Survey (BPS), 2026-05 vintage. Census survey data — separate from the permit-requirements verification above. All Idaho building activity
Tips & gotchas
- Ammon uses BluePrince (blueprinceportal.com) as its online permitting system — distinct from Idaho Falls' Cityworks and most other Bonneville County jurisdictions' systems. A free account is required to apply, upload plans, pay fees, and track inspection status.
- Ammon's Building Department publishes a clear split turnaround: 5 working days for residential permit review versus 14 working days for commercial — a wider commercial gap than Idaho Falls' statutory 10/20 business-day split. A separate general services page also advertises a blended 'Typically 5-10 business days' figure covering all permit types.
- Ammon does not issue partial permits (e.g., foundation-only) — the City requires the entire scope of work's plans and engineering to be submitted and approved together before any permit is issued, which is stricter than jurisdictions that allow phased/partial permitting.
- 100% of permit, plan-check, fire plan-check, and planning/zoning plan-check fees must be paid at the time of application in Ammon — not at permit issuance.
- Accessory structures trigger a permit requirement at just 200 square feet in Ammon — smaller than some neighboring jurisdictions' 120 sq ft (Idaho Falls) or common 200+ sq ft thresholds vary by city, so always confirm the local number.
- Ammon's ADU ordinance is notably restrictive: the ADU cannot be given its own address, must share the main house's driveway and utility connections (no additional service lines), and is capped at 75% of the main house's above-grade living space or 1,000 sq ft, whichever is more restrictive.
- Fences in Ammon only require a building permit at 7 feet or taller (to check engineering) — shorter fences do not require a permit, though the 3-foot sight-obscuring height limit still applies within 15 feet of a front lot line or at street intersections.
- Ammon's residential re-roof fee is capped at just $100 (1% of contract price), and commercial re-roofs skip Fire/Planning plan-check fees unless new structural elements are added — a comparatively lightweight process versus full new construction.
- The City Fee Resolution is updated twice yearly (spring and fall amendments) per City practice; this record reflects Resolution 2026-008, effective April 16, 2026 — verify current fees against the latest resolution on the City Code page before relying on exact dollar figures.
- No standalone electrical, plumbing, or mechanical permit review-timeline figure is published by the City — only the overall building-permit-track residential (5 working days) / commercial (14 working days) split was found; trade permits are commonly counter-issued in similar Idaho jurisdictions but this was not independently confirmed for Ammon.