Whether you’re breaking ground on a new build or upgrading rural access, Wiswell Inc delivers expert excavation and dirt work services tailored to Colorado’s high country. We specialize in site prep for cabins, driveways, foundations, and septic systems—built to last through every season. Honest work, done right, with over 20 years of local experience behind every job.
Who We Are
Modern Construction
& Building Agency
Dirt Work & Grading
Mountain Terrain? No Problem.
From rough terrain to sloped or uneven lots, we offer precision dirt work to shape your property and prep it for safe, stable construction. Whether you’re leveling for a home site or just cleaning up overgrowth, our equipment and expertise are built for Colorado’s rocky landscape.
Includes:
- Site leveling and grading
- Sloped lot correction
- Soil spreading and compaction
- Land clearing for rural parcels
Dirt work is the foundation of everything else. Start with a solid base.
Excavation & Site Clearing
We Move Earth. Literally
We provide excavation and land clearing services for homesites, driveways, garages, septic systems, and utility access. We’ve worked every kind of terrain in Park County—hardpan, clay, rock, and more. Our equipment can handle big jobs with the finesse needed to avoid costly mistakes.
Includes:
- Full site excavation
- Trenching for water, electrical, and gas
- Tree and brush removal
- Rough-in grading for new builds
Breaking ground? We’ll take it from the top… all the way down.
Foundation Prep & Trenching
Build Smart from the Start
A strong build starts with a stable foundation. We prep building sites with expert grading, trenching, and compaction. Whether you’re putting in a full foundation, crawlspace, or concrete slab, we’ll make sure the ground is ready to support your structure long-term.
Includes:
- Crawlspace and pad excavation
- Garage and outbuilding prep
- Utility trenching
- Soil compaction and base prep
We don’t just prep land. We set you up to build something that lasts.
Driveway Installation
Roads that Hold Up, Year After Year
We design and install mountain driveways that work. That means proper grading, water runoff control, and materials that won’t wash out at the first snowmelt. We’ll help you map the best route, clear the path, and lay down a solid road—built for trucks, trailers, and tough seasons.
Includes:
- Gravel or compacted dirt roads
- Driveway grading and widening
- Drainage and culvert installation
- Turnarounds, pull-ins, and access roads
If it leads to your home, it better be built to last.
Septic System Installation
Full-Service Septic Solutions
We install complete septic systems to meet Park County regulations and your property’s unique layout. From coordinating perk tests to final inspections, we handle the full process so you don’t have to. No surprises, just reliable work done right the first time.
Includes:
- Septic tank and leach field excavation
- Soil (perk) testing coordination
- County code-compliant design
- Final prep for inspections and connections
A septic system you can count on, even when no one wants to talk about it.
Culverts & Drainage Solutions
Keep the Water Moving
In the mountains, runoff can destroy a road or foundation fast. We install culverts, drainage ditches, and grading solutions to keep water flowing away from your investment. Prevent erosion, pooling, and structural damage with smart drainage built into your land prep.
Includes:
- Culvert pipe installation
- Driveway and access road drainage
- Swales, berms, and runoff grading
- Seasonal water flow planning
Good drainage is silent protection. You’ll never regret having it.
Best Services
We Provide Best Quality Construction Service
Let’s Talk About Your Project
We don’t do flashy estimates or slick upsells. We believe in trust, a firm handshake, and work that speaks for itself. If you’ve got a project in Park County, give us a call. We’ll tell you straight what it needs, how long it’ll take, and what it’ll cost. No fluff—just dirt work done right.
1+
Years Moving Dirt in Park County
We’ve been digging, grading, and building in this terrain for over two decades. We know the land—and how to work it right.
1+
Projects Completed in Colorado's High Country
From septic systems to mountain roads, we’ve helped over 500 clients get their land ready to build, live, and grow.
1%
Rock-Solid
Reputation
Our business is built on trust, word of mouth, and repeat clients. No gimmicks—just dirt work done right.
1+
Acres Cleared and
Graded
We’ve shaped Colorado land one scoop at a time—from tight cabin sites to wide-open ranch projects.
“Jason and his crew were the only ones who didn’t sugarcoat the job. They got it done on time, on budget, and it’s still holding up years later.”
Stephanie
Hartsel COReady to Dig In?
Whether you’re laying down a road or getting ready to pour a foundation,
we’ll make sure your land is ready.
we’ll make sure your land is ready.
Excavation & Septic Services in Hartsel and Park County, CO
We primarily serve Hartsel, Ranch of the Rockies, and greater Park County. If you’re building in the mountains and need the ground prepped right, give us a call.
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