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Commercial Tenant Improvement Permit in Westminster, Colorado

Required for interior remodels, additions, and tenant improvements in commercial buildings in Westminster. Reviewed against the 2021 IBC, IFC, IPC, IMC, IFGC, and IECC plus the 2023 NEC and ICC/ANSI A117.1-2017 accessibility standard, all with Westminster amendments. Submitted digitally via eTRAKiT with a published SLA.

Verified 2026-06-30 · Source

When you need this permit

  • Properly completed online building permit application via eTRAKiT; incomplete applications are not accepted
  • Scalable architectural site plan showing accessible routes, parking, curb ramps, and other ICC/ANSI A117.1-2017 compliance details
  • Exterior elevations depicting all exposed mechanical/electrical equipment, meters, and gas lines, with screening methods per Planning Division review
  • Digitally submitted plans must be signed and sealed by the design professional of record
  • Site-specific soils report including foundation recommendations
  • A licensed contractor must be signed onto the permit prior to issuance (design professionals may apply, but a licensed contractor must be added before issuance) Contractor
  • Commercial building permit review timeline: 30 business days for initial review, 15 business days for subsequent reviews (published City SLA)

Required documents

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Fee schedule

Building Permit Fee — valuation-based (same Table 1 as residential)Fee Schedule, effective January 1, 2026; commercial valuation includes labor, materials, and all trade work
Per the City of Westminster Building Division Fee Schedule valuation tiers
Plan Review Fee
65% of the Building Permit Fee
Permit Trade Fees (mechanical, plumbing, electric)
An additional 15% of the Building Permit Fee, plus 15% of the Plan Review Fee, for each trade involved
Estimated Use Tax
4.25% of 50% of Total Valuation

Review timeline

Plan reviewWestminster’s published plan-review target
15–30 business days

How long did your Commercial Tenant Improvement Permit permit actually take in Westminster?

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

Inspection process

  1. 1

    Framing / Structural

    After framing complete before walls covered

  2. 2

    MEP Rough-In

    Mechanical, electrical, plumbing rough-in before walls closed

  3. 3

    Final / Certificate of Occupancy

    All work complete, life safety systems functional

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

Tips

  • Westminster publishes a firm commercial review SLA: 30 business days for the initial review and 15 business days for each subsequent review cycle — budget your project timeline accordingly.
  • The Commercial Plan Review Submittal Guidelines list the complete adopted code set in one place: 2021 IBC/IFC/IRC/IPC/IMC/IFGC/IECC plus 2023 NEC and ICC/ANSI A117.1-2017 — use this as your single reference for code editions.
  • A licensed contractor must be signed onto the permit before issuance, even if a design professional submitted the original application. Contractor

Frequently asked questions

Westminster requires a commercial tenant improvement permit for: Properly completed online building permit application via eTRAKiT; incomplete applications are not accepted; Scalable architectural site plan showing accessible routes, parking, curb ramps, and other ICC/ANSI A117.1-2017 compliance details; Exterior elevations depicting all exposed mechanical/electrical equipment, meters, and gas lines, with screening methods per Planning Division review; Digitally submitted plans must be signed and sealed by the design professional of record; Site-specific soils report including foundation recommendations; A licensed contractor must be signed onto the permit prior to issuance (design professionals may apply, but a licensed contractor must be added before issuance); Commercial building permit review timeline: 30 business days for initial review, 15 business days for subsequent reviews (published City SLA). If your project isn't listed, confirm with City of Westminster — Department of Community Development, Building Division at 303-658-2075 before starting work.

In Westminster, the published Building Permit Fee — valuation-based (same Table 1 as residential) is: Per the City of Westminster Building Division Fee Schedule valuation tiers. Additional published fees: Plan Review Fee — 65% of the Building Permit Fee; Permit Trade Fees (mechanical, plumbing, electric) — An additional 15% of the Building Permit Fee, plus 15% of the Plan Review Fee, for each trade involved; Estimated Use Tax — 4.25% of 50% of Total Valuation. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

The City of Westminster's published SLA is 30 business days for the initial review and 15 business days for each subsequent review cycle.

You'll need: Commercial Building Permit Application (eTRAKiT); Commercial Plan Review Submittal Guidelines; Full Construction Drawing Set. See the required-documents checklist on this page for details on each.

Westminster requires 3 inspection(s) for a commercial tenant improvement permit, in order: Framing / Structural, MEP Rough-In, Final / Certificate of Occupancy. Schedule each through City of Westminster — Department of Community Development, Building Division (303-658-2075).

Apply through City of Westminster — Department of Community Development, Building Division at 4800 W. 92nd Avenue, Westminster, CO 80031. Phone: 303-658-2075, email: permits@westminsterco.gov. Office hours: Mon–Fri, 8 a.m.–5 p.m. (front office); residential permit review walk-through times: Tuesdays 1–4:30 p.m. and Thursdays 9 a.m.–noon; all permits must be applied for online via eTRAKiT. Official information: https://www.westminsterco.gov/621/Building-Division.

Westminster, Colorado has adopted: 2021 International Building Code (IBC) — with City of Westminster amendments; effective June 1, 2024; 2021 International Residential Code (IRC) — with City of Westminster amendments; effective June 1, 2024; 2021 International Fire Code (IFC) — with City of Westminster amendments; effective June 1, 2024; 2021 International Plumbing Code (IPC) — with City of Westminster amendments; effective June 1, 2024; 2021 International Mechanical Code (IMC) — with City of Westminster amendments; effective June 1, 2024; 2021 International Fuel Gas Code (IFGC) — with City of Westminster amendments; effective June 1, 2024; 2021 International Energy Conservation Code (IECC) — adopted per Westminster Municipal Code Section 11-9-11, meeting the Colorado HB22-1362 statewide minimum energy-code floor; Colorado Model Electric Ready and Solar Ready Code — adopted per Westminster Municipal Code Section 11-9-12, with Westminster amendments (waiver/variance provisions for commercial buildings over 10,000 sq ft and substantial cost differential appeals); 2023 National Electrical Code (NEC) / NFPA 70 — current edition (per Westminster's Commercial Plan Review Submittal Guidelines); the City has announced the 2026 NEC will become effective August 1, 2026, superseding the 2023 edition; ICC/ANSI A117.1-2017 — Standard for Accessible Design. Local amendments apply — see the Westminster overview page for the full list.

The 2021 International Building, Fire, Residential, Plumbing, Mechanical, Fuel Gas, and Energy Conservation Codes, plus the 2023 National Electrical Code and ICC/ANSI A117.1-2017 accessibility standard, all with Westminster amendments — per the City's Commercial Plan Review Submittal Guidelines.

Sources & verification

Verified against official sources. Last reviewed 2026-06-30.

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

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Commercial Tenant Improvement Permit in other cities

Alamosa, ColoradoArvada, ColoradoAspen, ColoradoAurora, ColoradoBoulder, ColoradoBreckenridge, ColoradoBroomfield, ColoradoCalhan, Colorado

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