Dillon building permits

Building department

Address

County Commons, 0037 Peak One Drive, Frisco, CO 80443

Phone

(970) 668-3170

Email

Contact via Email link at summitcountyco.gov/services/community_development/building_inspection/index.php

Office hours

Generally Monday-Friday 8:00 a.m.-5:00 p.m. (Wednesdays 10:00 a.m.-5:00 p.m. — the department is typically unavailable Wednesday mornings until 10:30 a.m. for a weekly staff meeting); Chief Building Official: Glen Morgan

Website

Official site

Permit portal

Apply online at Dillon's portal

Inspection guide

See how inspections work in Dillon — 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 Building Code (IBC) series with local amendments — Summit County Building Inspection Department completed adoption of the 2024 I-Code series; per the department's live announcement (checked 2026-07-06), all plans submitted on or after July 1, 2026 must comply with the 2024 I-Codes
• 2024 International Residential Code (IRC) with local amendments — part of the same 2024 I-Code series adoption
• 2024 International Energy Conservation Code (IECC) with amendments — replaces the former 'Summit County Sustainable Code' option for single-family homes; the Sustainable Code is no longer an energy-compliance pathway as of this adoption, per the department's own announcement
• Appendix REMP (Renewable Energy Mitigation Program) — added with the 2024 code adoption, per Summit County Building Inspection Department announcement
• Appendix BC (Accessory Dwelling Units for existing construction) — added with the 2024 code adoption, per Summit County Building Inspection Department announcement
• Colorado Wildfire Resiliency Code — any permit applied for on or after May 4, 2026 is subject to the newly adopted fire codes, including the updated sprinkler square-footage threshold; the full code is published by the Colorado Division of Fire Prevention & Control (dfpc.colorado.gov/colorado-wildfire-resiliency-code)
• Sprinkler requirement: all new residential structures 4,500 sq ft or greater must have fire sprinkler systems installed, per the Colorado Wildfire Resiliency Code as adopted by Summit County
• Town of Dillon Municipal Code, Chapter 18 — the Town has, 'in conjunction with Summit County... in general adopted the 2018 series of Building Codes with amendments' at the town-code level; however, the Summit County Building Inspection Department (which actually performs plan review/inspection for Dillon) has since moved forward to the 2024 I-Code series described above — this is a genuine, honestly-flagged discrepancy between the Dillon Municipal Code's own text (last referencing 2018) and the county department's current live practice (2024, effective July 1, 2026); applicants should confirm the currently-enforced edition directly with Summit County Building Inspection at time of submittal

Permit types & fees

• Building Permit (New Construction / Foundation, Framing, Finish)

  Required for construction of new single-family homes, foundations, framing, carpentry, and exterior/interior finish work in Dillon. A Town of Dillon Development Permit must be obtained FIRST from the Dillon Planning & Zoning Department; the building permit itself is then issued and inspected by the Summit County Building Inspection Department under the 2024 I-Code series (effective for submittals on or after July 1, 2026).

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• Building Permit — Addition, Remodel, Deck, Guard Replacement

  Required for additions, remodels, decks, and guard replacements to existing structures in Dillon. Same two-step process as new construction: a Town of Dillon Development Permit first, then the building permit through Summit County Building Inspection Department.

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• Electrical Permit

  Required for installation of wiring, receptacles, switches, light fixtures, electrical equipment, fixed-in-place appliances, and their connection to utility service in Dillon. Issued and inspected by the Summit County Building Inspection Department; a Town of Dillon Development Permit is required first only if the electrical work is part of a broader project that itself triggers a Development Permit (e.g., new structure, addition, solar panels) — confirm with the Dillon Town Planner if unsure.

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• EV Charger / EVSE Permit (Standard Electrical Permit)

  Installation of an electric vehicle charging station in Dillon is not a distinct permit type — it is billed and processed as ordinary electrical work through the Summit County Building Inspection Department's standard Technical Permit Application, the same process and fee schedule documented on this file's electrical-permit entry. Summit County's published Building Permit Fee Schedule (directly fetched and reviewed this session) has NO distinct 'EV charger,' 'electric vehicle,' or 'EVSE' line item; a dedicated Level 2 charger circuit is billed under the same unit-area or valuation-based standalone electrical fee tiers used for any other electrical work. Summit County's Sustainability/Electric Vehicles page (which covers the County's own public charging infrastructure) likewise describes no dedicated EV-charger permitting process, fee, or land-use code, and does not reference Colorado's HB24-1173 (Electric Vehicle Charging System Permits, 2024) despite Summit County's population exceeding that law's 20,000-resident county threshold — no evidence of a HB24-1173-driven adoption of streamlined EV-charging land-use permitting was found published by the County as of this session.

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• Plumbing Permit

  Required for installation of drain, waste and vent piping; potable water piping; fuel gas piping; and plumbing appliances and fixtures in Dillon. Issued and inspected by the Summit County Building Inspection Department under the 2024 IPC series (as part of the 2024 I-Code adoption).

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• Mechanical Permit

  Required for installation of furnaces and ducts, boilers and circulation piping, and exhaust fans and ducts in Dillon. Issued and inspected by the Summit County Building Inspection Department under the 2024 IMC series (as part of the 2024 I-Code adoption). Gas fireplaces, wood stoves, and outdoor fire pits are billed as a distinct Fireplace Permit.

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• Photovoltaic (Solar) Permit

  Required for residential and commercial photovoltaic (solar) system installations in Dillon. A Town of Dillon Development Permit is required first (solar panels are explicitly listed among projects requiring a Development Permit). The Summit County Building Inspection Department then issues the PV permit; residential roof-mounted systems under 15kW may be issued over the counter if the submittal is complete, while larger, ground-mounted, and commercial systems require plan review.

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• Demolition Permit

  Required for the removal of structures and safe disconnection of utility services in Dillon. Issued by the Summit County Building Inspection Department. A Town of Dillon Development Permit is not explicitly listed among the Town's named Development Permit project types, but applicants should confirm with the Dillon Town Planner whether a demolition triggers Town-level review given the scope of the specific project.

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