Licensed contractor in Grand County, Colorado

We do more than dig a hole and drop in a tank.

Tri-Lakes Contracting is a licensed septic installer, excavation contractor, and custom home builder working throughout Grand County. Site work and septic permitting are the critical first steps before you can even break ground on a build — and they’re exactly what we handle, start to finish.

Because we hold the septic, driveway, and building sides in-house, we bundle them into one path instead of stitching together three separate contractors: soil testing and engineered design, excavation and grading, the septic system, water storage, and the home itself — one crew, one point of contact, on your schedule.

We know Grand County terrain inside and out — open Middle Park meadow, high water tables near the headwaters, and cold soils. Whether your property is in Granby, Winter Park, Fraser and Grand Lake, we deliver site work built for Middle Park / headwaters conditions and permitted under Grand County Public Health and Colorado’s Regulation 43.

What we don’t do

We don’t design or stamp septic systems ourselves — that work is always completed by a licensed engineer. But we work closely with our engineering partners so you receive a complete, permit-ready package that passes Grand County Public Health review the first time, without the back-and-forth that stalls a Grand County build.

Where we work in Grand County

We serve Granby, Winter Park, Fraser, Grand Lake and Kremmling and the surrounding Middle Park / headwaters high country, out from Hot Sulphur Springs. At 7,500–9,000 ft, Grand County brings open Middle Park meadow, high water tables near the headwaters, and cold soils — conditions our crews work in every week, not once a season.