Service Area · Northern Front Range / foothills
Senior-led septic, excavation, driveways, water storage, and custom building across Larimer County — Northern Front Range / foothills at 5,000–8,500 ft — with the hard mountain site work handled in-house.
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 Larimer 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 Larimer County terrain inside and out — plains edge climbing into foothills and mountain parks, with highly variable soils. Whether your property is in Fort Collins, Loveland, Estes Park and Berthoud, we deliver site work built for Northern Front Range / foothills conditions and permitted under Larimer County Department of Health & Environment and Colorado’s Regulation 43.
What we handle in Larimer County
We excavate profile test pits, work with licensed engineers on the soils report and site plan, and lay out the drain field, tank, and setbacks — the design your Larimer County Department of Health & Environment permit stands on.
Full onsite wastewater systems — conventional, pressure-dosed, and advanced-treatment — installed for Northern Front Range / foothills ground and Larimer County Department of Health & Environment review.
Access, building pad, utilities, and all-weather driveways cut for Larimer County — plains edge climbing into foothills and mountain parks, with highly variable soils.
Buried cisterns and fire-suppression storage for lots without a reliable well, or where the county requires stored water on site.
From a build-ready design or your own plans, we take a raw Larimer County lot through to a finished, permitted home.
Before you buy or build, a clear read on what the lot can support — soil, slope, setbacks, water, and the permit path.
Local details by service
Gravel construction, repairs, swales and culverts in Larimer County →
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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 Larimer County Department of Health & Environment review the first time, without the back-and-forth that stalls a Larimer County build.
Already have engineered septic or OWTS plans? Upload the PDF for an instant Colorado installation estimate, then have Tri-Lakes, a licensed Colorado OWTS installer, price and build the system.
Where we work in Larimer County
We serve Fort Collins, Loveland, Estes Park, Berthoud and Red Feather Lakes and the surrounding Northern Front Range / foothills high country, out from Fort Collins. At 5,000–8,500 ft, Larimer County brings plains edge climbing into foothills and mountain parks, with highly variable soils — conditions our crews work in every week, not once a season.
Larimer County — questions
Yes. We excavate the soil test pits, coordinate the engineered design with a licensed engineer, and hand you a permit-ready package for Larimer County Department of Health & Environment under Colorado Regulation 43. On Northern Front Range / foothills ground — plains edge climbing into foothills and mountain parks, with highly variable soils — that soil evaluation is what the whole system is designed from.
That’s our model. Because we hold the septic, excavation, and building sides in-house, we sequence them into one path — soil test, design, driveway, septic, water, and the home — instead of you chasing three contractors across Larimer County.
Fort Collins, Loveland, Estes Park, Berthoud and Red Feather Lakes and the surrounding high country, out from Fort Collins. If your lot is raw Northern Front Range / foothills ground, that’s exactly the work we’re built for.
We don’t design or stamp septic systems ourselves — that’s always done by a licensed engineer. We work hand-in-hand with our engineering partners so your package passes Larimer County Department of Health & Environment review the first time.
Tell us about the lot and we'll map the whole path — feasibility, design, permit, and build.
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