The I-70 mountain corridor
Clear Creek County is the stretch of I-70 west of the foothills — about 9,400 people across four historic mining towns on the valley floors and mountain subdivisions above them, from roughly 7,500 feet at Idaho Springs to 10,500 feet at the top of the county. The unincorporated side is scattered mountain subdivisions — homes on steep, rocky multi-acre lots where the deck is often the best square footage on the property. Everything here is engineered for snow first.
Where we build in Clear Creek County
Idaho Springs is the biggest of the four towns, a canyon town where most decks are elevated over steep grade. Georgetown is the county seat and a National Historic Landmark district, with its own design review before permits. Silver Plume is the highest and smallest, a two-block silver camp at 9,100 feet that issues its own permits. Empire sits on US 40 toward Berthoud Pass; we confirm its permit path with Town Hall first. And the unincorporated county — Floyd Hill on the Evergreen side, Saint Mary's Glacier, Dumont and Lawson along the interstate — permits through the county itself.
Permits: one county counter, four town counters
The Clear Creek County Building Department in Georgetown issues permits for unincorporated addresses through its GovBuilt portal. The four towns each issue their own: Idaho Springs through City Hall with SAFEbuilt doing plan review; Georgetown through Building Services, also with SAFEbuilt, after a Certificate of Appropriateness from the Design Review Commission; Silver Plume through its Town Clerk and Planning & Zoning Board; and Empire, which publishes no building-permit form — we confirm town or county with the Clerk.
The county side has a few rules worth knowing: it adopted the 2024 I-Codes in 2026 under Resolution R-26-19, every structural deck plan must be wet-stamped by an engineer, homeowners may build their own deck but must meet the county's deck checklist, and the office works a 32-hour week. We confirm the right counter for your parcel, prepare one packet, and manage inspections through final.
Frost at 42 inches, snow by ClearMap, embers by code
The county's design criteria are specific: frost line is a 42-inch minimum, with deck piers at least 36 inches below grade — deeper than the 30 inches most of the metro builds to, and Seismic Design Category B. Roof snow load is not a single county figure; it's looked up by elevation on the county's Snow Load Design Table through ClearMap, parcel by parcel, with wind loads on the same map. Every covered deck or pergola we build here is engineered to those numbers.
The county also requires 2025 Colorado Wildfire Resiliency Code compliance, a Defensible Space Site Plan showing the 0–5, 5–30, and 30–100-plus foot zones, and sprinklers in all new single-family homes. We detail decks for embers — screened framing bays, clear undersides, capped composite surfaces — because the code asks and the terrain deserves it.
Repair, replace, and the honest answer
A lot of corridor decks were built before the current loads existed, on cabins and mining-era houses. We inspect the frame first: sound structure gets a composite re-deck; aged-out structure gets a replacement built to the stamped plans the county now requires. Either way it's in writing.
Sixty to eighty minutes, scheduled in blocks
From our shop in Centennial, Idaho Springs is about an hour up I-70 past Golden, and Silver Plume is closer to 80 minutes. As with our Jefferson County mountain work, we schedule corridor projects in blocks so a crew stays for consecutive days. The drive shapes the calendar, not the price or the guarantee. Run the cost calculator for a planning range, then tell us what you're planning and we'll come walk the site.