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Residential Addition / Remodel Permit in Frederick, Colorado

Required for additions and interior remodels to existing single-family and townhome structures in Frederick. Reviewed under the 2024 IRC as locally adopted; scope of required submittal documents scales to the extent of the project per the Town's General Permit and Submittal Requirements pages.

Verified 2026-07-23 · Source

When you need this permit

  • Governed by the 2024 IRC as locally adopted, plus Frederick's structural design criteria where new structural elements are involved (115 mph wind, 30 psf ground snow load, 36-inch footing depth, Seismic Design Category B)
  • Complete building permit application describing scope, valuation, and contractor information
  • Structural, electrical, mechanical, and plumbing plans scaled to project scope (full site/foundation/structural plans for additions; lighter documentation for interior-only remodels not affecting structure or egress)
  • Electrician and plumber performing any trade work must be listed with active, Town-verified Colorado DORA licenses per the Contemporaneous Review Guidelines

Required documents

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Fee schedule

Building Permit Fee (same valuation-based schedule as new construction)Town of Frederick Fee Schedule, effective January 1, 2026
$35.00 minimum, scaling per the valuation tiers in the 2026 Fee Schedule
Plan Review Fee
65% of Building Permit Fee
Residential Stock/Same Plan Change — Minor Plan Review Fee
$500.00
Residential Stock/Same Plan Change — Plan Review Fee
$750.00
Additional Plan Review (changes/revisions)
$200.00 per item

Review timeline

Plan review
Not published — contact the department

How long did your Residential Addition / Remodel Permit permit actually take in Frederick?

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

Inspection process

  1. 1

    Foundation (additions with new footings only)

    Before concrete pour, per 36-inch minimum footing depth

  2. 2

    Rough Frame

    Framing complete, connection to existing structure verified

  3. 3

    Rough Electrical / Plumbing / Mechanical

    Trade rough-ins before concealment

  4. 4

    Final Inspection

    All work complete per approved plans

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

Tips

  • Frederick's fee schedule includes a specific 'Residential Stock/Same Plan Change' minor plan review fee ($500) distinct from a full plan review ($750) — if your remodel reuses a builder's stock plan with minor changes, confirm with the Building Department which review tier applies before budgeting.
  • Re-chased 2026-07-23: Frederick does not run a separate addition/remodel-specific application — the General Permit Application PDF is byte-identical in content to the New Residential and New Commercial application PDFs (same 'GENERAL CONSTRUCTION PERMIT' form).

Frequently asked questions

Frederick requires a residential addition / remodel permit for: Governed by the 2024 IRC as locally adopted, plus Frederick's structural design criteria where new structural elements are involved (115 mph wind, 30 psf ground snow load, 36-inch footing depth, Seismic Design Category B); Complete building permit application describing scope, valuation, and contractor information; Structural, electrical, mechanical, and plumbing plans scaled to project scope (full site/foundation/structural plans for additions; lighter documentation for interior-only remodels not affecting structure or egress); Electrician and plumber performing any trade work must be listed with active, Town-verified Colorado DORA licenses per the Contemporaneous Review Guidelines. If your project isn't listed, confirm with Town of Frederick Building Department at 720-382-5516 (general questions); 720-382-5620 (inspection request line) before starting work.

In Frederick, the published Building Permit Fee (same valuation-based schedule as new construction) is: $35.00 minimum, scaling per the valuation tiers in the 2026 Fee Schedule. Additional published fees: Plan Review Fee — 65% of Building Permit Fee; Residential Stock/Same Plan Change — Minor Plan Review Fee — $500.00; Residential Stock/Same Plan Change — Plan Review Fee — $750.00; Additional Plan Review (changes/revisions) — $200.00 per item. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Frederick does not publish a plan-review timeline for this permit. Contact Town of Frederick Building Department at 720-382-5516 (general questions); 720-382-5620 (inspection request line) for current turnaround.

You'll need: Permit Application — General. See the required-documents checklist on this page for details on each.

Frederick requires 4 inspection(s) for a residential addition / remodel permit, in order: Foundation (additions with new footings only), Rough Frame, Rough Electrical / Plumbing / Mechanical, Final Inspection. Schedule each through Town of Frederick Building Department (720-382-5516 (general questions); 720-382-5620 (inspection request line)).

Apply through Town of Frederick Building Department at 401 Locust Street, Frederick, CO 80530 (mailing: PO Box 435, Frederick, CO 80530). Phone: 720-382-5516 (general questions); 720-382-5620 (inspection request line), email: building@frederickco.gov. Office hours: Monday-Friday, 7:30 a.m. - 4:30 p.m. Chief Building Official: mtheile@FrederickCO.gov.. Official information: https://www.frederickco.gov/416/Building-Department.

Frederick, Colorado has adopted: 2024 International Building Code (IBC) — Town of Frederick Building Codes page; 2024 International Residential Code (IRC); 2024 International Fire Code (IFC); 2024 International Mechanical Code (IMC); 2024 International Fuel Gas Code (IFGC); 2024 International Plumbing Code (IPC); 2024 International Existing Building Code (IEBC); 2024 International Energy Conservation Code (IECC); 2024 International Swimming Pool and Spa Code (ISPSC); 2024 International Property Maintenance Code (IPMC); 2023 National Electrical Code (NEC); 2025 Colorado Wildfire Resiliency Code (as published by the State of Colorado Division of Fire Prevention and Control); Colorado Model Electric Ready and Solar Ready Code; All codes adopted with local amendments per Frederick Municipal Code, Chapter 18 (Buildings and Building Regulations) — Town of Frederick Building Codes page (frederickco.gov/141/Building-Codes); Note on code-cycle currency: the Town's own Residential/New Construction Building Permit Checklist (a submittal-requirements document, not the code-adoption page) still directs energy-code compliance via '2021 IECC Energy Code' (REScheck, energy rating report, or prescriptive HERS documentation), even though the live Building Codes page lists 2024 IECC as currently adopted — this is the same pattern seen in other Colorado jurisdictions in this corpus where a static submittal PDF lags the actively-maintained code-adoption webpage. The 2024 IBC/IRC/IECC/IMC/IPC/IFGC/IEBC/ISPSC/IPMC + 2023 NEC list from the Building Codes page is treated as the current, governing adopted-code list for this file; confirm current code edition directly with the Building Department (720-382-5516) before finalizing a code analysis for any specific project, since the checklist PDF may not yet be updated to match the webpage.. Local amendments apply — see the Frederick overview page for the full list.

Not necessarily — the Town's General Permit process scales documentation to project scope; a straightforward interior remodel not affecting structure or egress typically requires lighter documentation than an addition with new foundation work, but confirm scope-specific requirements with the Building Department (720-382-5516).

Sources & verification

Verified against official sources. Last reviewed 2026-07-23.

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

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