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Commercial Building Permit (New Construction / Addition / Non-Residential / Multi-Family) in Caldwell, Idaho

Required for new construction and additions for commercial, non-residential, and multi-family (triplex and above) projects in Caldwell. Reviewed by a four-member Development Team (Planning & Zoning, Engineering, Building, Fire) coordinated by an assigned Team Leader. Apply through the Citizenserve online portal — paper submittals are not accepted for commercial projects.

Reviewed 2026-08-02 · Source

When you need this permit

  • Project must be commercial, non-residential, or multi-family (triplex and above) — duplexes and single/two-family dwellings use the residential process instead
  • Submit digitally through the Citizenserve online portal (citizenserve.com) — paper submittals are not accepted for commercial permits
  • Completed Building Permit Application and Checklist for Commercial Use
  • Completed Contractor Registration Declaration form Contractor
  • Two complete sets of Building Plans
  • Two complete sets (rolled separately from Building Plans) of civil engineering construction drawings
  • Complete Landscape Plan rolled into the Civil Engineering Plans
  • Two sets of storm water calculations, originally signed and stamped by a professional engineer currently licensed in Idaho
  • Two sets of Building calculations, specifications, etc.
  • All plans and calculations stamped and originally signed by an architect or engineer currently licensed in Idaho
  • All contractors must be currently licensed in Idaho
  • Plan review fees paid in full at time of submittal
  • Building permit fees (building permit fee, impact fees, utility connection fees, engineering inspection fees) paid when the permit is issued, before pre-construction meeting is scheduled
  • Fire Sprinkler, Fire Alarm/Monitoring, and Hood Suppression systems require a separate application to the Building Department with separate fees
  • Electrical, plumbing, and mechanical permits are separate permit applications with separate fees, submitted after the Building Permit has been obtained
  • Food-related establishments (restaurants, bars, markets, delis, snack bars, etc.) must also be reviewed and approved by Southwest District Health, (208) 455-5400

Required documents

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Fee schedule

Building Permit — valuation $0–$499Caldwell Building Safety Fees Resolution No. 300-25, Table 1 — the same valuation-based Table 1 used for all building permits (residential and commercial); no separate commercial valuation table exists for the base building permit fee itself
$34.00 flat
Building Permit — valuation $500–$1,999Resolution No. 300-25, Table 1
$34.00 base + $0.02624 per dollar above $500
Building Permit — valuation $2,000–$24,999Resolution No. 300-25, Table 1
$64.37 base + $0.01135 per dollar above $2,000
Building Permit — valuation $25,000–$49,999Resolution No. 300-25, Table 1
$326.54 base + $0.0085 per dollar above $25,000
Building Permit — valuation $50,000–$99,999Resolution No. 300-25, Table 1
$549.65 base + $0.00565 per dollar above $50,000
Building Permit — valuation $100,000–$499,999Resolution No. 300-25, Table 1
$846.27 base + $0.004546 per dollar above $100,000
Building Permit — valuation $500,000–$999,999Resolution No. 300-25, Table 1
$2,755.45 base + $0.004336 per dollar above $500,000
Building Permit — valuation $1,000,000+Resolution No. 300-25, Table 1
$5,031.78 base + $0.003650 per dollar above $1,000,000
Commercial Building Plan Review FeeResolution No. 300-25, Section I-D-1a; covers initial review through 3rd review. Higher than the residential rate (40%).
65% of building permit fee
Commercial Fire Plan Review FeeResolution No. 300-25, Section I-D-1b; commercial-only line item, no residential equivalent
20% of building permit fee
Engineering Plan Review Fee (commercial)Resolution No. 300-25, Section I-D-1c
20% of building permit fee
Planning & Zoning Plan Review Fee (commercial)Resolution No. 300-25, Section I-D-1d
35% of building permit fee (minimum $55.00)
Additional Plan Review (4th and subsequent reviews)Resolution No. 300-25, Table 11; 3rd review is included in the base plan review fee, only the 4th and later reviews are billed separately
20% of plan review fee (4th); 30% (5th); 50% (6th); 65% (7th+)
Reinspection (3rd inspection / 2nd reinspection for same work segment)Resolution No. 300-25, Section V-C; first reinspection is no charge
$60.00

Review timeline

Plan reviewCaldwell’s published plan-review target
12–12 business days

How long did your Commercial Building Permit (New Construction / Addition / Non-Residential / Multi-Family) permit actually take in Caldwell?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Footing / Foundation

    Before concrete pour — verify depth (24-inch frost line minimum), forms, reinforcement per stamped structural plans

  2. 2

    Framing / Structural

    After structural framing complete — verify against stamped structural plans, shear walls, special inspections per IBC Chapter 17 where required

  3. 3

    Fire

    Fire Department inspection of fire lanes, hydrants, FDC, Knox box, and any fire sprinkler/alarm/hood suppression systems (submitted and inspected under separate applications) — coordinated by the Fire Codes Team Leader

  4. 4

    Final / Certificate of Occupancy

    All Development Team disciplines (Building, Fire, Engineering, Planning & Zoning) sign off; ADA accessibility features verified; Certificate of Occupancy issued upon passing

See the full Caldwell inspection guide — scheduling & re-inspection fees →

Tips

  • Caldwell assigns every commercial project a single Development Team Leader (from Planning & Zoning, Engineering, Building, or Fire) who coordinates status updates across all four review disciplines — use that contact for project-specific questions rather than calling each department separately.
  • The 12-business-day Complete Plan Review goal only applies to complete submittals with every checklist item and attachment included; incomplete submittals will most likely miss that goal.
  • Electrical, plumbing, and mechanical permits for commercial projects use their own valuation-based fee tables (Tables 4, 7, and 10 of Resolution No. 300-25) — distinct from the flat per-dwelling-unit rates used for residential trade permits — and are applied for separately after the Building Permit is issued.
  • Fire Sprinkler, Fire Alarm/Monitoring, and Cooking Hood Suppression systems each require their own separate application and fee — they are not included in the base Building Permit.
  • Food-related establishments must also secure approval from Southwest District Health, (208) 455-5400, prior to building permit issuance.
  • All design professionals (architects/engineers) and contractors must be currently licensed in the State of Idaho — plans stamped by an out-of-state-only license will not be accepted.

Frequently asked questions

Caldwell requires a commercial building permit (new construction / addition / non-residential / multi-family) for: Project must be commercial, non-residential, or multi-family (triplex and above) — duplexes and single/two-family dwellings use the residential process instead; Submit digitally through the Citizenserve online portal (citizenserve.com) — paper submittals are not accepted for commercial permits; Completed Building Permit Application and Checklist for Commercial Use; Completed Contractor Registration Declaration form; Two complete sets of Building Plans; Two complete sets (rolled separately from Building Plans) of civil engineering construction drawings; Complete Landscape Plan rolled into the Civil Engineering Plans; Two sets of storm water calculations, originally signed and stamped by a professional engineer currently licensed in Idaho; Two sets of Building calculations, specifications, etc.; All plans and calculations stamped and originally signed by an architect or engineer currently licensed in Idaho; All contractors must be currently licensed in Idaho; Plan review fees paid in full at time of submittal; Building permit fees (building permit fee, impact fees, utility connection fees, engineering inspection fees) paid when the permit is issued, before pre-construction meeting is scheduled; Fire Sprinkler, Fire Alarm/Monitoring, and Hood Suppression systems require a separate application to the Building Department with separate fees; Electrical, plumbing, and mechanical permits are separate permit applications with separate fees, submitted after the Building Permit has been obtained; Food-related establishments (restaurants, bars, markets, delis, snack bars, etc.) must also be reviewed and approved by Southwest District Health, (208) 455-5400. If your project isn't listed, confirm with City of Caldwell Department of Building Safety at (208) 455-3024 before starting work.

The base Building Permit fee itself uses the same valuation-based Table 1 as residential. What differs is the plan review fee percentage: commercial building plan review is 65% of the permit fee (vs. 40% for residential), plus a commercial-only 20% Fire plan review fee. Engineering (20%) and Planning & Zoning (35%, min $55) plan review fees are the same rate structure as residential. Commercial electrical, plumbing, and mechanical trade permits do use separate, commercial-specific valuation-based fee tables from their residential counterparts.

The Development Team's published goal is to issue a Complete Plan Review — combining Planning & Zoning, Building, Fire, and Engineering comments — within 12 business days of a complete submittal for new construction or an addition. This is a goal for the first full review round, not a guarantee of total time to permit issuance, which also depends on how quickly the design professional responds to review comments.

You'll need: Building Permit Application and Checklist for Commercial Use; Commercial Permit Guide Packet; Certificate of Value Form; Contractor Registration Declaration; Construction Drawings (Building, Civil, Structural, Electrical, Mechanical, Plumbing); ComCheck Energy Analysis; Storm Water Calculations. Depending on your project, Caldwell may also ask for: Material Safety Data Sheets (MSDS). See the required-documents checklist on this page for details on each.

Caldwell requires 4 inspection(s) for a commercial building permit (new construction / addition / non-residential / multi-family), in order: Footing / Foundation, Framing / Structural, Fire, Final / Certificate of Occupancy. Schedule each through City of Caldwell Department of Building Safety ((208) 455-3024).

Apply through City of Caldwell Department of Building Safety at 205 South 6th Ave, Caldwell, ID 83605. Phone: (208) 455-3024, email: rcollins@cityofcaldwell.org. Office hours: Mon–Fri (inspection requests must be called in by 7:00 AM for same-day scheduling). Official information: https://www.cityofcaldwell.org/Departments/Community-Development/Building-Safety-Division.

Caldwell, Idaho has adopted: 2018 International Residential Code (IRC) — Parts I, II, III, IV and IX; 2018 International Building Code (IBC); 2018 International Existing Building Code (IEBC); 2018 International Fire Code (IFC); 2023 National Electrical Code (NEC) — Administrative Rules IDAPA 24.39.10 (Rules of the Idaho Electrical Board; renumbered from IDAPA 07.01.01–07.01.11); 2018 International Mechanical Code (IMC); 2018 International Fuel Gas Code (IFGC); 2017 Idaho State Plumbing Code — Based on the 2015 Uniform Plumbing Code; Administrative Rules IDAPA 24.39.20 (Rules Governing Plumbing; renumbered from IDAPA 07.02.02–07.02.07); 2018 International Energy Conservation Code (IECC) with State Amendments; 2018 International Property Maintenance Code; 1997 Uniform Code for the Abatement of Dangerous Buildings; 1997 Uniform Sign Code. Local amendments apply — see the Caldwell overview page for the full list.

Sources & verification

Key facts 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 Caldwell building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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