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Residential Addition / Remodel Permit in Windsor, Colorado

Required for additions, basement finishes, wall additions/removals, and structural remodels to existing homes in Windsor. Basement finishes must be submitted on a separate, standalone permit and may not be bundled into a master plan.

Verified 2026-07-06 · Source

When you need this permit

  • Permit required for: adding or removing walls; new structures; moving or installing plumbing or electrical; finishing a basement — required 'even if you are doing all the work yourself' per the Town's own FAQ
  • Basement finishes cannot be included with a master plan and must be submitted as a separate permit
  • Reviewed under the 2024 I-Codes as adopted, effective January 1, 2026
  • No separate Town contractor license required; electrical/plumbing contractors need current Colorado state (DORA) licenses Contractor

Required documents

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Fee schedule

Building Permit FeeTown Fee Schedule, Updated 02.01.2026
Equal to SAFEbuilt's own valuation-based fee (not separately published)
Windsor Administration Fee
25% of the SAFEbuilt fee
Use Tax
3.65% of half the project's valuation

Review timeline

Plan review
Not published — contact the department

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

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

Inspection process

  1. 1

    Framing

    Framing and connection to existing structure before cover

  2. 2

    Rough Electrical/Plumbing/Mechanical

    Trade rough-ins before concealment

  3. 3

    Final Inspection

    All work complete per approved plans

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

Tips

  • Basement finishes require their own standalone permit in Windsor — they cannot be bundled into a master-plan submittal, unlike some other project types.
  • The Town's FAQ explicitly states a permit is required for basement finishing 'even if you are doing all the work yourself' — owner-performed work is not exempt.

Frequently asked questions

Yes. The Town's FAQ states that finishing a basement requires a building permit, even if the homeowner performs all the work themselves. Basement finishes must be submitted on a separate permit, not bundled with a master plan.

In Windsor, the published Building Permit Fee is: Equal to SAFEbuilt's own valuation-based fee (not separately published). Additional published fees: Windsor Administration Fee — 25% of the SAFEbuilt fee; Use Tax — 3.65% of half the project's valuation. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Windsor does not publish a plan-review timeline for this permit. Contact Town of Windsor Community Development / Building Permits (Building Division contracted to SAFEbuilt) at 970-674-2436 (Permit Technician); 970-674-2400 (Town main line, option 4 for Building Permits/Community Development); SAFEbuilt Inspections 970-674-1036 or 1-866-671-1036 for current turnaround.

You'll need: Building Permit Application; Floor Plan / Construction Drawings. See the required-documents checklist on this page for details on each.

Windsor requires 3 inspection(s) for a residential addition / remodel permit, in order: Framing, Rough Electrical/Plumbing/Mechanical, Final Inspection. Schedule each through Town of Windsor Community Development / Building Permits (Building Division contracted to SAFEbuilt) (970-674-2436 (Permit Technician); 970-674-2400 (Town main line, option 4 for Building Permits/Community Development); SAFEbuilt Inspections 970-674-1036 or 1-866-671-1036).

Apply through Town of Windsor Community Development / Building Permits (Building Division contracted to SAFEbuilt) at 200 N. 11th Street, Windsor, CO 80550 (Permit Technician); Planning Department at 301 Walnut Street, Windsor, CO 80550. Phone: 970-674-2436 (Permit Technician); 970-674-2400 (Town main line, option 4 for Building Permits/Community Development); SAFEbuilt Inspections 970-674-1036 or 1-866-671-1036, email: SAFEbuilt inspection requests: inspect@safebuilt.com. Town Permit Technician (Robin Volner, per the Multi-Family Building Permit Fee Estimate form): rvolner@windsorgov.com. Office hours: Monday-Thursday, 8 a.m. to 5 p.m.; online services available Fridays (Town offices are closed to walk-in service on Fridays per the Building Permits page). Official information: https://www.windsorco.gov/137/Building-Permits.

Windsor, Colorado has adopted: 2024 International Codes (I-Codes), adopted with an effective date of January 1, 2026 — Town of Windsor Building Permits page (verbatim: 'The 2024 I-Codes have been adopted with the effective date of January 1, 2026') states all new building plans, including master plans and energy code submissions, are reviewed under the 2024 I-Codes as of that date. Source: https://www.windsorco.gov/137/Building-Permits; 2023 National Electrical Code (NEC), effective for permit applications submitted on or after January 1, 2024 — per the Town's own '2023 NEC Adoption Letter — Windsor' PDF referenced from the Building Permits page; 2025 Colorado Wildfire Resiliency Code (CWRC), adopted by the Colorado Wildfire Resiliency Code Board (WRCB) effective July 1, 2025 (8 CCR 1507-39); the Town of Windsor's own Building Permits page states the CWRC 'will take effect in Windsor on July 1, 2026'; DATA-CURRENCY CONFLICT DISCLOSED: the Town's separately-hosted 'Design Criteria and Adopted Codes' PDF (last modified 2024-07-23, prior to the 2024 I-Codes' Jan 1, 2026 effective date) still lists a superseded code suite — 2018 IRC/IBC, 2018 IECC, 2018 IFC, 2020 NEC, 2018 IPC, 2018 IMC, 2018 IFGC, 2018 IEBC, 2018 ISPSC, all 'with Amendments' — and has evidently not been refreshed to reflect the 2024 I-Codes/2023 NEC transition confirmed directly and verbatim on the live Building Permits page. This file treats the live Building Permits page (2024 I-Codes eff. 1/1/2026, 2023 NEC eff. 1/1/2024) as the current governing code list, per the more-recent, directly-dated source. Source: https://www.windsorco.gov/DocumentCenter/View/16086/Adopted-Codes-and-Design-Criteria (PDF metadata ModDate 2024-07-23) vs. https://www.windsorco.gov/137/Building-Permits (live page, fetched 2026-07-06). Local amendments apply — see the Windsor overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-07-06.

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

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