Commercial Building Permit (New Construction) — Post Falls, Idaho · Requirements sheet
Verified 2026-08-02 · Source: https://www.postfalls.gov/DocumentCenter/View/1282/Commercial-Building-Permit-Submittal-Requirements-PDF
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Commercial Building Permit (New Construction) in Post Falls, Idaho
Required for new commercial construction, additions, and other structural work on non-residential buildings in Post Falls. Reviewed against the 2018 IBC as adopted, with valuation established per Occupancy Classification and Type of Construction (the City's Fee Schedule cites 'Building Safety Journal 7/2008' as its valuation-methodology source — i.e. the ICC's industry-standard building valuation data — rather than a flat city-published per-square-foot rate as used for residential). Commercial Plan Check/Review is billed at 65% of the Building Permit fee (vs. 25% for single-family/duplex/townhouse). Kootenai County Fire and Rescue (KCFR), a separate political subdivision independent of the City, bills separately for its own plan review and inspections on new commercial construction.
Verified 2026-08-02 · Source
When you need this permit
- Building permit required for new commercial construction and additions; plans reviewed under the 2018 IBC as adopted by the City of Post Falls
- Commercial valuation is established per Occupancy Classification and Type of Construction (per the Fee Schedule's 'Building Safety Journal 7/2008' methodology reference), not a flat city per-sq-ft rate; the resulting valuation is run through the same general Valuation Chart used citywide to calculate the Building Permit fee
- One (1) set of all plans required: architectural, structural, mechanical, electrical, and plumbing; multi-family plans require a separate application and plan set for each building. Architectural and structural plans must be sealed by an Idaho-licensed professional
- If not designed to the prescriptive provisions of the IBC, complete structural calculations addressing both vertical and lateral forces, stamped and signed by an Idaho-licensed engineer or architect, are required
- One (1) set of specifications, sealed engineering calculations, COMcheck(s) (IECC commercial energy compliance), and truss sheets as required for the project
- Kootenai County Fire and Rescue (KCFR) Fee Acknowledgement form required (digital fill-in available during online submittal; separate paper form for paper submittals only) — acknowledges that KCFR, a separate agency, bills the applicant directly and separately from the City
- A Building Code Analysis must appear on the plan cover sheet (or be readily found elsewhere in the plans): codes designed under, project location/description, separated or nonseparated uses, occupancy classification (whole building or per area), number of stories, total building height, type of construction per the IBC, square footage per floor, maximum floor area permitted and basis for any area increase, occupant load per area, exits required per occupant load, fire/occupancy separations, plumbing fixtures required, list of required special inspections, and any deferred submittals
- Architectural site plan (based on City-approved site plans, if applicable); exterior elevations showing finished grade lines, stairs, ramps, handrails, and building height
- Foundation plan with cross sections of footings, pads, walls, reinforcement, anchor bolts, and sill plates (size, location, embedment depth, including hold-down devices/straps); concrete reinforcement grade, size, spacing, location, and bar count
- Floor plans showing dimensions, room use/occupancy classification labels, bearing walls, fire walls, area/occupancy separation walls, and window/door dimensions, locations, and types
- Floor framing details, roof framing plan (prefabricated truss plans, or ridge/rafter/ceiling-joist/purlin sizing for hand-framed roofs, with lumber type/grade/species), cross sections, braced wall/shear wall plans (panel type, location, fastener size/spacing, anchorage), and header/beam/column/post locations and sizes
- Equipment Screening plans required per Post Falls Municipal Code 18.24.040 (Commercial and Industrial Performance Standards): roof- or wall-mounted mechanical equipment (A/C, elevator overruns, heating/ventilating units and ducting) must be screened from a horizontal line of sight, architecturally consistent with the building; ground-mounted equipment visible from a public right-of-way must be inset into building facades and/or screened with landscaping or low walls
- New commercial buildings must have a Knox lock box installed per International Fire Code Section 506.1 (per KCFR); an electric gate additionally requires a Knox override switch — all KCFR requirements, including outstanding invoices, must be satisfied at least 30 days before KCFR will sign the Certificate of Occupancy
- Site Plan Review (a separate Planning/Zoning fee, $2,000.00 per site) commonly applies alongside a Commercial Building Permit for new sites or major commercial projects
- Apply online (preferred) through the Community Development Portal (postfallsid.portal.opengov.com); paper submittals require complete address (including suite number if applicable), parcel information, accurate description and valuation of work, and owner/contractor/architect/engineer information
Required documents
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Fee schedule
Review timeline
Inspection process
- 1
Foundation
Before concrete pour — footing/foundation cross-sections, reinforcement, anchor bolts, and embedment depth per approved plans
- 2
Framing
Structural framing, braced wall/shear panels, and header/beam connections per approved plans
- 3
Mechanical/Electrical/Plumbing Rough-In
Ductwork, wiring, and piping rough-in before wall closure
- 4
Fire/Life-Safety Inspections (Kootenai County Fire and Rescue)
Automatic sprinkler installation, fire alarm testing, commercial kitchen hood tests, medical gas line testing, and other on-site inspections required for new commercial construction; billed separately by KCFR at $108.00/hour, one-hour minimum — not a City of Post Falls inspection
- 5
Final
All work complete per approved plans; City final inspection plus KCFR's final inspection for occupancy (KCFR must sign off before a Certificate of Occupancy issues, and all KCFR invoices must be paid at least 30 days prior)
See the full Post Falls inspection guide — scheduling & re-inspection fees →
Tips
- Commercial building valuation is NOT a flat published $/sq ft rate like residential ($96.83/sq ft) — the Fee Schedule instead references 'Building Safety Journal 7/2008' as its methodology for establishing valuation by Occupancy Classification and Type of Construction, which is then run through the same citywide Valuation Chart.
- Kootenai County Fire and Rescue (KCFR) is a SEPARATE agency from the City of Post Falls and bills applicants directly — budget separately for its plan review (30% of the building permit fee or $150.00 minimum) and inspections ($108.00/hour, one-hour minimum) on top of City permit fees.
- New commercial buildings require a Knox lock box (and a Knox override switch if an electric gate is installed) per International Fire Code Section 506.1, and all KCFR fees/requirements must be satisfied at least 30 days before KCFR will sign the Certificate of Occupancy.
- Commercial Plan Check/Review (65% of the Building Permit fee) is well above the 25% residential rate.
- Non-residential impact fees are charged per square foot of floor area and vary substantially by use (e.g., $10.10/sq ft for Commercial/Shopping Center vs. $1.37/sq ft for Mini-Warehouse) — confirm the correct use category before estimating project cost.
Frequently asked questions
Sources & verification
Verified against official sources. Last reviewed 2026-08-02.
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Post Falls building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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