Windsor building permits
VerifiedDepartment contacts, adopted codes, permit types, fees, and gotchas for Windsor, Colorado.
Last verified 2026-07-06 · Source · Embed this page’s badge · Version history
Building department
- Address
- 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
- 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)
- Website
- Official site
- Permit portal
- Apply online at Windsor's portal
Inspection guide
See how inspections work in Windsor — sequence, scheduling & re-inspection fees.
Codes adopted
Colorado has no statewide-mandated building code edition. Under the Colorado Constitution's home-rule provisions (art. XX, home rule for municipalities since 1902; home rule for counties since 1970), building codes and zoning are an enumerated home-rule charter power, so cities and counties adopt and amend their own construction codes independently — predominantly the I-Codes, with editions and local amendments varying by jurisdiction. The one statewide floor is for energy: HB22-1362 (2022) created the Energy Code Board (jointly appointed by the Colorado Energy Office and the Department of Local Affairs) and requires that, on or after July 1, 2023 and before July 1, 2026, any municipality or county that adopts or updates a building code must adopt and enforce an energy code achieving performance equivalent to or better than the 2021 IECC together with the board's Model Electric Ready and Solar Ready Code (which includes electric-ready, EV-ready, and solar-ready provisions); from July 1, 2026 onward the floor shifts to the board's Model Low Energy and Carbon Code or an equivalent. Electrical and plumbing permitting defaults to the Colorado State Electrical Board and State Plumbing Board (within DORA's Division of Professions and Occupations) — the state issues permits and inspects statewide except in counties/jurisdictions that operate their own certified Electrical or Plumbing Inspection Program, in which case the local program has authority instead. Always confirm the currently adopted code edition, local amendments, and inspection authority (state board vs. local program) with the specific jurisdiction before submitting plans.
- 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)
Permit types & fees
Residential Building Permit (New Construction)
Required for new single-family homes and similar new residential construction in Windsor. Reviewed under the 2024 I-Codes (effective January 1, 2026) by SAFEbuilt under contract to the Town; the Town of Windsor is the issuing authority. New projects require a new Master Plan reviewed under the 2024 I-Codes — pre-2024-I-Code master plans cannot be revised or reused.
Residential Addition / Remodel Permit
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.
Electrical Permit
Required for installing or moving electrical systems in Windsor. Governed by the 2023 NEC, effective for applications submitted on or after January 1, 2024. No separate Town of Windsor contractor license is required; electrical contractors must hold a current Colorado Electrical Board (DORA) license.
Plumbing Permit
Required for installing or moving plumbing systems, and for lawn sprinkler system installation (potable or non-potable water hookup), in Windsor. Plumbing contractors must hold a current Colorado Plumbing Board (DORA) license; no separate Town contractor license is required.
Mechanical / HVAC Permit
Required for mechanical system work (furnaces, HVAC equipment) as part of new construction, additions, or remodels in Windsor, reviewed under the 2024 I-Codes (IMC/IFGC as adopted). No standalone consumer-facing HVAC-swap FAQ entry was found distinct from the general remodel/electrical/plumbing permit triggers.
Roofing Permit (Reroof)
Required to re-roof a house in Windsor, so the Town can conduct required inspections confirming the work meets the adopted building code. Governed by the 2024 I-Codes' roofing provisions as adopted.
Accessory Dwelling Unit (ADU) Permit
Required for construction of an ADU in Windsor, a two-step process: first a Planning Department land-use application/approval (Municipal Code Sec. 14-2-100 zoning eligibility, Sec. 16-3-40 ADU regulations), then a standard building permit once the ADU land-use application is approved and recorded.
Fence / Wall Permit and Regulations
Fences meeting Windsor's standard fencing regulations generally do NOT require a building permit, per the Town's own FAQ, but all fences/walls/architectural screening devices must still conform to the zoning district's height, setback, and offset rules set out in the Town's Fence Regulations handout.
Shed / Accessory Structure Permit
A permit is required for a shed or other accessory structure in Windsor only if it exceeds 120 square feet in area or is taller than 10 feet at the peak; placement is also restricted relative to the principal building.
Solar Photovoltaic (PV) Permit
Required for installation of rooftop residential or commercial solar photovoltaic systems within the Town of Windsor. Building permit review and inspection is contracted to SAFEbuilt, the same third party that administers all other Windsor building permits; the electrical portion is governed by the 2023 NEC. No dedicated solar/PV fee line item is published in the Town's Fee Schedule — solar is billed under the same SAFEbuilt valuation-based Building Permit Fee plus the Town's 25% Administration Fee, subject to Colorado's statewide solar permit fee cap.
EV Charger Installation Permit
Required for installation of an EV charging station (EVSE) within the Town of Windsor. Building permit review and inspection is contracted to SAFEbuilt, the same third party that administers all other Windsor building permits; the electrical portion is governed by the 2023 NEC. Unlike Westcliffe or other small Colorado towns, Windsor's population (2020 Census: 32,716) exceeds the 10,000-population municipal threshold in Colorado's HB24-1173 (Electric Vehicle Charging System Permits Act), meaning Windsor is a COVERED jurisdiction required to have adopted the state model EV-charger permitting code, its own objective published standards, or its existing process by December 31, 2025, with a 3-business-day decision-notification requirement. No dedicated EV-charger permit page, checklist, or HB24-1173 compliance statement was found published separately from the Town's general Building Permits page as of this review — this is flagged as an open item rather than assumed compliant or noncompliant. Re-verified 2026-07-20: the Town's Fee Schedule (Updated 02.01.2026, live and re-fetched directly) still shows Building Permit Fee = "SAFEbuilt" (no dollar figure published — set by SAFEbuilt's own external valuation-based schedule) plus the Town's 25% Administration Fee (Res 1992-18) and 3.65%-of-half-valuation Use Tax (Ord 2002-1106/Res 2014-51), confirmed current and unchanged from the prior review. No EV/electric vehicle/charging station line item exists anywhere in the current Fee Schedule PDF. The Colorado Energy Office's own HB24-1173 Local Government EV Charging Permitting page (checked directly) provides guidance and a model code but publishes no public jurisdiction-by-jurisdiction compliance tracker or list, so whether Windsor filed one of the three required compliance actions by the December 31, 2025 deadline (and the March 1, 2026 confirmation report) remains genuinely unconfirmable from any public source as of this review — this is a real information gap, not an unchased one.
New residential construction activity
New privately-owned residential construction onlyHousing units authorized by building permits for new privately-owned residential construction — this is not total permit volume (no commercial permits or remodels).
- Latest month (2026-05)
- No data reported
- Trailing 12 months
- 138units
4 of 12 months reported · #25 in Colorado coverage by units
- Year to date (2026 YTD through 2026-05)
- 188units
145 buildings · $68.3M valuation
4 month(s) reported to Census
- Full year 2025
- 810units
427 buildings · $232.3M valuation
Source: U.S. Census Bureau, Building Permits Survey (BPS), 2026-05 vintage. Census survey data — separate from the permit-requirements verification above. All Colorado building activity
Tips & gotchas
- Windsor's Building Division is contracted to SAFEbuilt for plan review and inspections, but the Town of Windsor itself remains the permit-issuing authority, collects its own 25% administration fee and 3.65%-of-half-valuation use tax on top of SAFEbuilt's fee, and does NOT require its own separate contractor license (a genuinely distinctive local rule versus several SAFEbuilt-contracted peers in this corpus like Northglenn, which layers its own city license requirement) — confirm current SAFEbuilt staffing directly rather than relying on the Colorado DFPC's prequalified-building-department list, which carries a stale 2020-2023-dated contact for Windsor (Caleb Sulzen, now Weld County's Chief Building Official) rather than a current one.
- Windsor straddles both Weld and Larimer counties — this file assigns Windsor to Weld County per project convention (consistent with Northglenn's treatment of its own Adams/Weld straddle), but confirm the specific parcel's county for any recording, deed, or county-level requirement.
- A live-source vs. cached-document conflict was found and disclosed rather than silently resolved: the Town's own separately-hosted 'Design Criteria and Adopted Codes' PDF (last modified 2024-07-23) still lists 2018-edition I-Codes and the 2020 NEC, while the live Building Permits page directly and verbatim states the 2024 I-Codes took effect January 1, 2026 and the 2023 NEC has applied since January 1, 2024. This file follows the live page as the current authority; the stale PDF's structural design-criteria table (ground snow load, wind speed, seismic category, frost depth) was NOT reproduced in this file because it could not be independently re-verified as still current against the new code edition within this session — flagged as an open item rather than guessed.
- Windsor does not publish a public valuation-tiered building permit fee table the way several peer Colorado jurisdictions in this corpus do (e.g., Northglenn, Golden) — the Building Permit Fee itself IS whatever SAFEbuilt calculates directly from project valuation, with the Town's own 25% administration fee and use tax layered on top. Get a written project-specific estimate from the Permit Technician or SAFEbuilt before committing to a budget.
- Windsor is one of the more fence-permissive jurisdictions in this corpus: most fences meeting the Town's standard height/setback/material rules require NO permit at all, unlike Northglenn's near-universal fence-permit requirement.
- New residential construction requires a fresh Master Plan reviewed under the 2024 I-Codes — pre-2024-I-Code master plans are not accepted for new projects, and basement finishes can never be bundled into a master plan; they always require their own separate permit.
- ADUs in Windsor go through a genuinely two-stage process (Planning Department land-use/zoning approval first, at 1-3 months per the Town's own page, THEN a separate SAFEbuilt-reviewed building permit) — budget both stages sequentially.
- No numeric review-day SLA is published anywhere on the Town's site for standard building, electrical, plumbing, mechanical, or roofing permits — Colorado is home-rule with no statewide clock, and unlike Golden (which publishes an explicit multi-tier Review Periods table), Windsor's public-facing pages simply do not carry a turnaround-time commitment for these permit types. The one narrow exception is the lawn sprinkler permit, described as issuable in '5-10 minutes...same day,' and the ADU land-use stage's published 1-3 month range.