Building Permit — Addition, Remodel, Deck, Guard Replacement in Dillon, Colorado

Dillon requires a building permit — addition, remodel, deck, guard replacement for: Town of Dillon Development Permit required first — the Town's own guidance explicitly lists 'building additions,' 'remodels,' 'tenant finish,' and 'large sheds' among projects requiring this permit; Decks and guard replacements require a Summit County building permit per the department's own Building Permits page; Submit in person at the Summit County Building Inspection Department, Frisco office, before 4:30 p.m.; Plan review fee of 65% of the building permit fee due at submittal when plans are required; Affordable Housing Development Impact Fee applies to additions to existing detached single-family structures at the same tiered rates as new construction. If your project isn't listed, confirm with Summit County Building Inspection Department (performing building-code review/inspection for the Town of Dillon under an intergovernmental services arrangement — not the Town's own department, and not the County's primary unincorporated-area jurisdiction) at (970) 668-3170 before starting work.

In Dillon, the published Building Permit Fee (same valuation tiers as new construction) is: $50.00 minimum (valuation $1-$500) up to $6,332.22 for the first $1,000,000 plus $3.90 per additional $1,000. Additional published fees: Plan Review Fee — 65% of the Building Permit Fee; Affordable Housing Development Impact Fee — $0/sq ft up to 1,499 sq ft, scaling to $2.00/sq ft at 5,000+ sq ft. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Dillon does not publish a plan-review timeline for this permit. Contact Summit County Building Inspection Department (performing building-code review/inspection for the Town of Dillon under an intergovernmental services arrangement — not the Town's own department, and not the County's primary unincorporated-area jurisdiction) at (970) 668-3170 for current turnaround.

You'll need: Town of Dillon Development Permit Application; Building Permit Application (Summit County). See the required-documents checklist on this page for details on each.

Dillon requires 3 inspection(s) for a building permit — addition, remodel, deck, guard replacement, in order: Framing, MEP Rough-In, Final. Schedule each through Summit County Building Inspection Department (performing building-code review/inspection for the Town of Dillon under an intergovernmental services arrangement — not the Town's own department, and not the County's primary unincorporated-area jurisdiction) ((970) 668-3170).

Apply through Summit County Building Inspection Department (performing building-code review/inspection for the Town of Dillon under an intergovernmental services arrangement — not the Town's own department, and not the County's primary unincorporated-area jurisdiction) at 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. Official information: https://www.summitcountyco.gov/services/community_development/building_inspection/index.php.

Dillon, Colorado has adopted: 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. Local amendments apply — see the Dillon overview page for the full list.