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New Commercial Building Permit — Middleton, Idaho · Requirements sheet
Reviewed 2026-08-02 · Source: https://middleton.id.gov/LinkClick.aspx?fileticket=-ovrvjzilQo%3D&tabid=55&portalid=0
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.
New Commercial Building Permit in Middleton, Idaho
Required for new commercial construction, additions, and any change of occupancy in Middleton, per IBC Sections 105.1 and 111.1. Applied for through the CitizenServe online portal. A $1,000 New Commercial Building Permit Deposit is required at application (the Commercial Building Plan Review Fee, 65% of the building permit fee, applies toward the deposit and must be paid within 30 days or the deposit is forfeited).
Reviewed 2026-08-02 · Source
When you need this permit
- A Commercial Building Permit is required for any new construction, remodel, additions, alterations, and changes of occupancy per IBC 105.1 and 111.1 (City of Middleton Commercial Certificate of Occupancy Only Permit & New Tenant Verification form)
- $1,000.00 New Commercial Building Permit Deposit due at submittal (City Fee Schedule, Res. 526-25)
- Plan set must be prepared by an Idaho Registered Design Professional and include, per the City's 2018 IBC 'Commercial - NEW or Tenant Improvement' submittal requirements: Middleton Design Criteria, applicable code data, occupant load calculations and life-safety/means-of-egress analysis, drainage calcs and civil engineering, site plan, structural building sections and elevations, wall/roof assemblies, rated fire-wall and floor/ceiling assemblies, listed penetration firestopping, IECC energy COMMchecks (envelope, interior/exterior lighting, mechanical), structural engineering and special-inspections schedule, electrical/mechanical/plumbing design, plumbing fixture calculations (IBC Ch. 29), reflected ceiling plan, geotech/soils report, and accessible-elements design per ICC/ANSI A117.1-2009
- Preliminary approvals that may be required before permit issuance: Planning & Zoning pre-application meeting and Design Review Zoning Certificate, Industrial User Survey, Pre-Construction Elevation Certificate, Southwest District Health, Idaho Health & Welfare, HD4/ITD/Middleton Highway District, Civil Engineering, Public Works (Sewer and Water), and Middleton or Caldwell Fire Districts (City of Middleton Online Permitting and Registration Instructions)
- Fire protection systems plans must be submitted separately to the applicable fire district: Middleton Fire District for north-of-river development, or Caldwell Fire Dept. for south-of-river development
- Building permits will not be issued until confirmation is received that Sewer & Water Connection fees and all applicable Impact, Civil Engineering, and Fire Department fees have been paid
- General contractor/building permit holder is responsible for requesting all building-related inspections (foundation through completion), excluding electrical, mechanical, and plumbing, which are requested separately under the trade permits
Required documents
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Fee schedule
New Commercial Building Permit DepositDue at application submittal; City Fee Schedule Res. 526-25 (current schedule effective 7/15/2026 per Res. 544-26)
$1,000.00
Building Permit Fee — valuation-basedCity Fee Schedule Res. 508-24/446-20, Attachment A
Actual Project Value per Certificate of Value (or equivalent BVD per Occupancy Classification and Type of Construction) applied against the same ICC 2021 Building Valuation Data (BVD) table used for residential; e.g. $0-3,000 valuation = $131.52; $50,000-51,000 = $1,028.13; $99,000-100,000 = $1,570.04; values over $100,000 = $1,570.04 for the first $100,000 plus $5.60 per each additional $1,000 or fraction thereof
Commercial Building Plan Review FeeMust be paid within 30 days of assessment or the permit deposit is forfeited (City Fee Schedule Res. 526-25) — compare to the 25% rate charged for residential plan review
65% of building permit fee
Electrical Commercial Plan Review FeeCity Fee Schedule Res. 526-25
≤10,000 SF: $200.00; >10,000 to 100,000 SF: $400.00; >100,000 SF: $600.00
Mechanical Commercial Plan Review FeeCity Fee Schedule Res. 526-25
≤10,000 SF: $200.00; >10,000 to 100,000 SF: $400.00; >100,000 SF: $600.00
Plumbing Commercial Plan Review FeeCity Fee Schedule Res. 526-25
≤10,000 SF: $200.00; >10,000 to 100,000 SF: $400.00; >100,000 SF: $600.00
Electrical Permit — Other Installations commercial/industrial/solar (Category #6), cost up to $10,000City Fee Schedule Res. 526-25, Attachment B — a copy of the contractor's bid is required
2% of fair market value of labor, equipment and materials, plus $60.00 (1% from $10,001-$100,000 plus $260.00; 0.5% over $100,001 plus $1,160.00)
Plumbing Permit — Other Installations commercial/industrial (Category #5), cost up to $20,000City Fee Schedule Res. 526-25, Attachment C
3% of cost of labor/materials/equipment plus $60.00 ($20,001-$100,000: minus $20,000, 2% plus $660.00; over $100,001: minus $100,000, 1% plus $2,260.00)
Mechanical Permit — Other Installations commercial/industrial (Category #5), cost up to $20,000City Fee Schedule Res. 526-25, Attachment D
3% of cost of labor/materials/equipment plus $60.00 ($20,001-$100,000: minus $20,000, 2% plus $660.00; over $100,001: minus $100,000, 1% plus $2,260.00)
Public Works Residential/Commercial Building Inspection FeeCity Fee Schedule Res. 508-24
$25.00
City Engineer review of commercial/industrial/institutional/multi-family building permit applicationsCity Fee Schedule Res. 525-25
Time & Materials
Temporary Certificate of Occupancy — Commercial OnlyCity Fee Schedule Res. 526-25
$75.00
Reinspection — Building, second notice of correction for same itemCity Fee Schedule Res. 508-24
$75.00
Transportation Impact Fee — Commercial (per 1,000 sq ft), varies by land-use typeCity Fee Schedule Res. 526-25, Attachment E (New Transportation Impact Fees) — commercial rates vary far more widely than the flat per-dwelling-unit residential rate
Examples: General Office $4,400; Shopping Center $6,414; Light Industrial $3,214; Warehousing $969; Restaurant-Fast Food (no drive-thru) $20,602 — full table of 40+ land-use types in Attachment E
Middleton Police Department Impact Fee — Nonresidential (per 1,000 sq ft)City Fee Schedule Res. 499-23
Retail $422.00; Office $163.00; Industrial $73.00; Institutional $293.00
Fire District Impact Fee — Nonresidential (per 1,000 sq ft)City Fee Schedule ORD 682 — a different fire district's fee schedule (e.g. Caldwell Fire Dept./Rural Fire District or Star Rural Fire District) applies depending on project location; confirm which district serves the parcel before budgeting
Middleton Rural Fire District: Retail $780.00, Office $300.00, Industrial $135.00, Institutional $541.00
Review timeline
Plan review
Not published — contact the department
Inspection process
- 1
Footing / Foundation
Before concrete pour
- 2
Underground / Rough-In (Electrical, Mechanical, Plumbing)
Trade rough-in inspections, requested separately by each trade contractor before walls/slab close
- 3
Framing / Structural
Structural building sections, fire-rated wall/floor-ceiling assemblies, and penetration firestopping per the approved plan set
- 4
Final Building
All work complete per approved plans; required before Certificate of Occupancy is issued
See the full Middleton inspection guide — scheduling & re-inspection fees →
Tips
- The Commercial Building Plan Review Fee is 65% of the building permit fee — much higher than the 25% rate charged for residential plan review.
- Commercial electrical, plumbing, and mechanical trade permits are NOT billed on the flat square-footage tiers used for new residential — they fall under each trade's 'Other Installations commercial/industrial' cost-based category (Category #6 electrical, Category #5 plumbing/mechanical) and require a copy of the contractor's bid.
- Building permits will not be issued until the City confirms Sewer & Water Connection fees and all applicable Impact, Civil Engineering, and Fire Department fees have been paid — budget for this as a separate gating step from the building permit fee itself.
- Which fire district reviews your fire-protection plans depends on location: Middleton Fire District for north-of-river development, Caldwell Fire Dept. for south-of-river development — confirm before submitting.
- Transportation impact fees for commercial projects vary enormously by land-use type (per Attachment E) — a fast-food restaurant with a drive-thru is assessed at a far higher per-1,000-SF rate than a warehouse or light-industrial building, because the fee is trip-generation-based.
Frequently asked questions
Middleton requires a new commercial building permit for: A Commercial Building Permit is required for any new construction, remodel, additions, alterations, and changes of occupancy per IBC 105.1 and 111.1 (City of Middleton Commercial Certificate of Occupancy Only Permit & New Tenant Verification form); $1,000.00 New Commercial Building Permit Deposit due at submittal (City Fee Schedule, Res. 526-25); Plan set must be prepared by an Idaho Registered Design Professional and include, per the City's 2018 IBC 'Commercial - NEW or Tenant Improvement' submittal requirements: Middleton Design Criteria, applicable code data, occupant load calculations and life-safety/means-of-egress analysis, drainage calcs and civil engineering, site plan, structural building sections and elevations, wall/roof assemblies, rated fire-wall and floor/ceiling assemblies, listed penetration firestopping, IECC energy COMMchecks (envelope, interior/exterior lighting, mechanical), structural engineering and special-inspections schedule, electrical/mechanical/plumbing design, plumbing fixture calculations (IBC Ch. 29), reflected ceiling plan, geotech/soils report, and accessible-elements design per ICC/ANSI A117.1-2009; Preliminary approvals that may be required before permit issuance: Planning & Zoning pre-application meeting and Design Review Zoning Certificate, Industrial User Survey, Pre-Construction Elevation Certificate, Southwest District Health, Idaho Health & Welfare, HD4/ITD/Middleton Highway District, Civil Engineering, Public Works (Sewer and Water), and Middleton or Caldwell Fire Districts (City of Middleton Online Permitting and Registration Instructions); Fire protection systems plans must be submitted separately to the applicable fire district: Middleton Fire District for north-of-river development, or Caldwell Fire Dept. for south-of-river development; Building permits will not be issued until confirmation is received that Sewer & Water Connection fees and all applicable Impact, Civil Engineering, and Fire Department fees have been paid; General contractor/building permit holder is responsible for requesting all building-related inspections (foundation through completion), excluding electrical, mechanical, and plumbing, which are requested separately under the trade permits. If your project isn't listed, confirm with City of Middleton Building Department at (208) 585-3133 before starting work.
The Commercial Building Plan Review Fee is 65% of the building permit fee, due within 30 days of assessment or the deposit is forfeited — compared to 25% for residential plan review.
No. No numeric plan-review turnaround timeline for commercial building permits was found on the City's website, fee schedule, or permitting instructions after exhaustive search. Contact the Building Department at (208) 585-3133 for current estimates.
You'll need: Commercial Building Permit Application; Complete Commercial Plan Set (2018 IBC); Certificate of Value (or equivalent Building Valuation Data). See the required-documents checklist on this page for details on each.
Middleton requires 4 inspection(s) for a new commercial building permit, in order: Footing / Foundation, Underground / Rough-In (Electrical, Mechanical, Plumbing), Framing / Structural, Final Building. Schedule each through City of Middleton Building Department ((208) 585-3133).
Apply through City of Middleton Building Department at 1103 W Main St, Middleton, ID 83644. Phone: (208) 585-3133, email: citmid@middletoncity.org. Office hours: Mon–Fri 8:00 AM – 5:00 PM. Official information: https://middleton.id.gov/Departments/Building.
Middleton, Idaho has adopted: 2018 International Building Code (IBC), with Idaho amendments — adopted by reference via Middleton City Code Title 4, Chapter 1 (state-adopted code); 2018 International Residential Code (IRC), Parts I, II, III and IX — Idaho Residential Code (2020 Edition amendments); 2018 International Existing Building Code (IEBC); 2018 International Energy Conservation Code (IECC) — Idaho Energy Conservation Code (2020 Edition amendments); 2018 International Mechanical Code (IMC); 2018 International Fuel Gas Code (IFGC); 2018 International Residential Code Parts V & VI (mechanical); 2017 Idaho State Plumbing Code (based on 2015 Uniform Plumbing Code); 2023 National Electrical Code (NEC), with Idaho amendments; 2018 International Fire Code (IFC) — administered by the Idaho State Fire Marshal, not the City; ICC/ANSI A117.1-2009 (Accessible and Usable Buildings and Facilities). Local amendments apply — see the Middleton 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 Middleton building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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