Mechanical / HVAC Permit in Ammon, Idaho

Ammon requires a mechanical / hvac permit for: Mechanical permit required for residential single/duplex family dwelling installations, decorative gas fireplaces, replacement/addition to existing residential equipment, existing residential basement finish, and multiple family/commercial/institutional/industrial installations; Governed by the 2018 IMC and 2018 IFGC as identified on the City of Ammon Building Department page; Apply through the BluePrince portal. If your project isn't listed, confirm with City of Ammon Building Department at 208-612-4000 before starting work.

In Ammon, the published Residential Single/Duplex Family Dwelling — 0-1,500 sq ft is: $160.00 (includes 3 inspections). Additional published fees: Residential Single/Duplex Family Dwelling — 4,501 sq ft and up — $310.00 plus $60 for each additional 1,000 sq ft or portion thereof (includes 6 inspections); Decorative Gas Fireplace — $50.00 per fireplace unit (includes all inspections); Replacement or Addition to Existing Residential — first appliance — $30.00 base permit fee plus $50.00 inspection fee; Replacement or Addition to Existing Residential — each additional appliance — $20.00; Existing Residential Basement Finish — 0-1,500 sq ft — $90.00 (includes 2 inspections); Multiple Family, Commercial, Institutional, Industrial — base fee — $30.00 per building, plus inspection fee of 3% of installed cost up to $20,000, 2% of value $20,000-$100,000, 1% of value $100,000-$200,000, 0.5% of value above $200,000; Commercial Roof-Top Unit Replacement (no additional ductwork) — 1.5% of the valuation of the new equipment and installation. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Ammon does not publish a plan-review timeline for this permit. Contact City of Ammon Building Department at 208-612-4000 for current turnaround.

You'll need: BluePrince Mechanical Permit Application. See the required-documents checklist on this page for details on each.

Ammon requires 2 inspection(s) for a mechanical / hvac permit, in order: Rough-In, Final. Schedule each through City of Ammon Building Department (208-612-4000).

Apply through City of Ammon Building Department at 2135 South Ammon Road, Ammon, ID 83406. Phone: 208-612-4000, email: building@cityofammon.us. 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. Official information: https://www.cityofammon.us/departments/building/.

Ammon, Idaho has adopted: 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. Local amendments apply — see the Ammon overview page for the full list.