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Commercial Tenant Finish (Tenant Improvement) Permit in Firestone, Colorado

Required for tenant finishes in existing commercial buildings in Firestone. Genuinely distinct from the new-commercial process: the Town publishes a separate 'Commercial Tenant Finish Permit Submittal Checklist' (REV 04.24) with its own scope — no civil package or soils report required, structural documentation only if applicable, change-of-occupancy analysis when the use changes, and energy code documentation typically only for previously unoccupied shell spaces. Plans must still be stamped by a Colorado Licensed Architect and Colorado Registered Engineers, and separate submittals to the Frederick-Firestone Fire District and St. Vrain Sanitation District are still required. Fees run through the same valuation-based Building Permit Fee Table — there is no distinct TI fee line.

Verified 2026-08-02 · Source

When you need this permit

  • Electronic documents required as PDF attachments via the online portal; incomplete submittals will be rejected; all submittals are reviewed in the order received (per the TI checklist, REV 04.24)
  • All plans, specifications, and calculations stamped by their respective design professionals (Colorado Licensed Architect and Colorado Registered Engineers)
  • All General, Mechanical, Plumbing, and Electrical Contractors listed on the permit application; total building valuation plus total electrical valuation provided (detailed bids may be required if the Building Official deems valuations inaccurate)
  • Architectural code analysis including change-of-occupancy analysis (if applicable), occupancy classification, sprinkler/fire alarm status, egress, accessibility (IBC Ch. 11), and life safety/egress plans per IBC 107.2.3
  • IECC/energy code compliance documentation only if applicable — typically for a previously unoccupied shell space
  • Structural package (IBC 1603 design criteria, foundations, framing) required only IF APPLICABLE to the TI scope
  • Electrical one-line diagram required only with a service upgrade or when substantial load is added to the existing system; electrical site plan only if exterior electrical equipment is added, moved, or removed
  • Kitchen hoods require manufacturer's shop drawings; spray/paint booths require engineered plans submitted to both the Fire Department and Building Department
  • Separate submittals must be made to the Frederick-Firestone Fire District and St. Vrain Sanitation District

Required documents

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Fee schedule

Building Permit Fee (valuation-based; no distinct TI fee line)Building Division Fee Schedule (REV 01.2025); no separate tenant-finish fee line item exists — TI permits are billed under the same valuation table as other building permits
$80 (valuation $1-$2,000) scaling by tier, e.g. $1,075 for the first $100,000 plus $6.50 per additional $1,000 up to $500,000
Plan Review FeeRequired to be paid at time of submittal per the 2026 Non-Residential Fees sheet
65% of the Building Permit Fee
Administration Fee: Commercial
$150.00
Commercial Electrical Permit Fee
$141.20 (electrical valuation under $2,000); $141.20 plus $14.12 per $1,000 or fraction thereof at $2,001 and above
Use Tax2026 Non-Residential Fees sheet
2.6% of half the valuation total
Temporary Certificate of Occupancy$400 refunded if the final CO is issued prior to the TCO expiration date
$750.00
Reinspection Fee
$75.00 progressive (24-hour inspection delay)

Review timeline

Plan review
Not published — contact the department

How long did your Commercial Tenant Finish (Tenant Improvement) Permit permit actually take in Firestone?

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

Inspection process

  1. 1

    Rough Electrical/Plumbing/Mechanical

    Trade rough-ins before concealment, per approved stamped plans

  2. 2

    Framing (if structural scope)

    New walls/structural elements before cover, when the TI includes framing or structural work

  3. 3

    Fire District Inspections

    Frederick-Firestone Fire Protection District performs its own inspections under its separate submittal/approval

  4. 4

    Final Inspection / Certificate of Occupancy

    All work complete per approved plans; performed by SAFEbuilt Colorado under contract to the Town. A Temporary CO is available for $750 ($400 refundable if the final CO issues before TCO expiration)

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

Tips

  • Firestone treats tenant finish as its own permit track with a lighter submittal than new commercial construction — no soils report or civil package, and structural documentation only when the TI scope actually touches structure — but plans still must be stamped by Colorado-licensed design professionals.
  • Incomplete submittals are rejected rather than held, and review is strictly first-come-first-served — submit a complete package to avoid losing your place in line.
  • If the tenant finish changes the occupancy classification (e.g., office to restaurant), a change-of-occupancy analysis is required in the code analysis.
  • Energy code (IECC) documentation typically applies only when finishing a previously unoccupied shell space — first-generation tenant finishes should budget for it.
  • Fire district and sanitation district submittals are separate from and in addition to the Town permit — coordinate all three early.

Frequently asked questions

Firestone requires a commercial tenant finish (tenant improvement) permit for: Electronic documents required as PDF attachments via the online portal; incomplete submittals will be rejected; all submittals are reviewed in the order received (per the TI checklist, REV 04.24); All plans, specifications, and calculations stamped by their respective design professionals (Colorado Licensed Architect and Colorado Registered Engineers); All General, Mechanical, Plumbing, and Electrical Contractors listed on the permit application; total building valuation plus total electrical valuation provided (detailed bids may be required if the Building Official deems valuations inaccurate); Architectural code analysis including change-of-occupancy analysis (if applicable), occupancy classification, sprinkler/fire alarm status, egress, accessibility (IBC Ch. 11), and life safety/egress plans per IBC 107.2.3; IECC/energy code compliance documentation only if applicable — typically for a previously unoccupied shell space; Structural package (IBC 1603 design criteria, foundations, framing) required only IF APPLICABLE to the TI scope; Electrical one-line diagram required only with a service upgrade or when substantial load is added to the existing system; electrical site plan only if exterior electrical equipment is added, moved, or removed; Kitchen hoods require manufacturer's shop drawings; spray/paint booths require engineered plans submitted to both the Fire Department and Building Department; Separate submittals must be made to the Frederick-Firestone Fire District and St. Vrain Sanitation District. If your project isn't listed, confirm with Town of Firestone Building Division (plan review/permit administration by Town staff; building inspections contracted to SAFEbuilt Colorado) at 303-833-3291 before starting work.

In Firestone, the published Building Permit Fee (valuation-based; no distinct TI fee line) is: $80 (valuation $1-$2,000) scaling by tier, e.g. $1,075 for the first $100,000 plus $6.50 per additional $1,000 up to $500,000. Additional published fees: Plan Review Fee — 65% of the Building Permit Fee; Administration Fee: Commercial — $150.00; Commercial Electrical Permit Fee — $141.20 (electrical valuation under $2,000); $141.20 plus $14.12 per $1,000 or fraction thereof at $2,001 and above; Use Tax — 2.6% of half the valuation total; Temporary Certificate of Occupancy — $750.00; Reinspection Fee — $75.00 progressive (24-hour inspection delay). These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

No numeric timeline is published. The Town's own TI checklist says only that submittals are reviewed in the order received. Contact the Building Division (building@firestoneco.gov, 303-833-3291) for a current estimate.

You'll need: Permit Application (Online Portal); Tenant Finish plan set per the TI Submittal Checklist; Complete project manual(s). Depending on your project, Firestone may also ask for: Change of occupancy analysis; Structural plans and calculations. See the required-documents checklist on this page for details on each.

Firestone requires 4 inspection(s) for a commercial tenant finish (tenant improvement) permit, in order: Rough Electrical/Plumbing/Mechanical, Framing (if structural scope), Fire District Inspections, Final Inspection / Certificate of Occupancy. Schedule each through Town of Firestone Building Division (plan review/permit administration by Town staff; building inspections contracted to SAFEbuilt Colorado) (303-833-3291).

Apply through Town of Firestone Building Division (plan review/permit administration by Town staff; building inspections contracted to SAFEbuilt Colorado) at 9950 Park Avenue, Firestone, CO 80504. Phone: 303-833-3291, email: building@firestoneco.gov. Office hours: Monday through Friday, 8 a.m. to 5 p.m. (Town Hall hours); SAFEbuilt Colorado's local office is at 11409 Business Park Circle, Suite 350, Firestone, CO 80504, phone 303-774-1388 (per SAFEbuilt's own site); Firestone-specific SAFEbuilt inspection contact: firestone-building@safebuilt.com / 303-774-0454, and Building Official Tim Moroney, tmoroney@safebuilt.com / 970-545-3555 (per SAFEbuilt/search-indexed contact listing — recommend confirming current staffing directly with the Town before publishing to end users, as this level of detail was not independently re-confirmed on a live SAFEbuilt staff-directory page during this extraction). Official information: https://www.firestoneco.gov/425/Building-Permits-Fees.

Firestone, Colorado has adopted: 2018 International Building Code (IBC), adopted by reference and locally amended as the 'Firestone Building and Construction Code' (FBCC) — Town of Firestone Building Guides page, https://firestoneco.gov/294/Building-Guides, and Ordinance No. 1029, https://firestoneco.gov/DocumentCenter/View/9387; 2018 International Residential Code (IRC), adopted by reference and locally amended; 2018 International Plumbing Code (IPC); 2018 International Mechanical Code (IMC); 2018 International Existing Building Code (IEBC); 2018 International Fuel Gas Code (IFGC); 2018 International Property Maintenance Code (IPMC); 2018 International Swimming Pool and Spa Code (ISPSC); 2018 International Energy Conservation Code (IECC); 2018 International Fire Code (IFC), per Ordinance No. 1029 chapter list (Chapter 15.32); 2023 National Electrical Code (NEC), adopted by reference per Ordinance No. 1029 (replacing the previously-adopted 2020 NEC); Ordinance No. 1029 (adopted following a June 21, 2023 public hearing) repealed and reenacted Firestone Municipal Code Chapters 15.04 (IBC), 15.06 (IRC), 15.08 (NEC), 15.10 (IEBC), 15.12 (IFGC), 15.14 (IMC), 15.16 (IPC), 15.18 (IPMC), 15.32 (IFC), 15.20 (ISPSC), and 15.36 (IECC) — source PDF, https://firestoneco.gov/DocumentCenter/View/9387/1029-AN-ORDINANCE-OF-THE-BOARD-OF-TRUSTEES-OF-THE-TOWN-OF-FIRESTONE-COLORADO. Local amendments apply — see the Firestone overview page for the full list.

Yes, as a submittal process. Firestone publishes a separate 'Commercial Tenant Finish Permit Submittal Checklist' (REV 04.24) for tenant finishes in existing commercial buildings, with a narrower required package than new commercial construction (no soils report or civil package; structural only if applicable). Fees, however, run through the same valuation-based Building Permit Fee Table — there is no distinct TI fee line.

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

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