Summit County
Excavation, Grading & Sitework Contractor — Park City, UT
Park City is the most demanding ground we work — steep mountain terrain, a short construction season, snow and frost, high-end resort and custom-home standards, and Summit County's strict grading and stormwater requirements. This is exactly the kind of complex, schedule-sensitive sitework Cadoava is built for: precise grading on slopes, retaining where the grade changes, and utilities threaded through tight, rocky sites.
Sitework built for Park City
Steep-terrain specialty
Mountain lots mean serious cut/fill, retaining walls, and erosion control. Getting drainage and slope stability right is the whole game up here.
Short season, tight schedule
Park City's build window is narrow. We mobilize and sequence to get the dirt and utilities in before the weather closes.
Resort-grade standards
High-end resort and custom work demands precision and a clean site. Summit County's grading/SWPPP rules are strict — we build to them.
What we focus on here: Mountain grading, retaining walls, underground utilities, excavation, and concrete for Park City resort and custom projects.
What Park City requires before you dig
Every rule and number below comes from Park City's own code, fee schedule, or published guidance — each one linked. Last verified 2026-08-22.
Inside the Soils Ordinance Boundary, a 200 mg/Kg lead limit sets your cover requirements
Any lot inside Park City's mapped Soils Ordinance Boundary — the Prospector neighborhood and the Spiro annexation area — must be capped with a minimum 6 inches of approved topsoil under Municipal Code section 11-15-2. Approved topsoil is defined as soil at or below 200 mg/Kg total lead, tested by EPA Method SW-846 6010. New culinary or stock-watering wells are banned anywhere inside the boundary under section 11-15-10. The Building Department verifies cap depth and lead level with a $203 Soil Sample Fee before issuing a Certificate of Compliance.
Source: Park City Municipal Code, Title 11, Chapter 15Construction has a ski-season blackout calendar, not just daily hours
Park City's Construction Mitigation Plan sets standard work hours at Monday through Saturday 7am to 9pm and Sunday 9am to 6pm, but it also names specific restricted work dates tied to resort-town peak-traffic events, during which construction, deliveries, and right-of-way work require advance approval from the Chief Building Official. The 2025/2026 calendar includes the Sundance Film Festival (Jan 22 to 25 city-wide, Jan 26 to Feb 1 Old Town), MLK weekend (Jan 17 to 19), and Presidents Day weekend (Feb 14 to 16). Contractors file a Restricted Work Dates Exception Request to work through them.
Source: Park City Construction Mitigation PlanNo septic percolation testing from late November through February
Summit County Health Department approves septic in the Park City area, not Utah County, and it does not conduct percolation tests from November 27 through March 1 each year. Testing resumes after March 1 case by case, depending on location, weather, and ground temperature. That freeze applies on top of, not instead of, Park City's own restricted work-date calendar, so a septic-dependent lot needs its soil evaluation lined up before the season closes or the design work stalls until spring.
Source: Summit County Health DepartmentSlope over 15% means a geotechnical report before you can submit
Park City's own Submittal Requirements set two slope-based triggers that stack on the base building-permit package. A geotechnical report, including slope stability and retaining-wall design, is required at initial submittal once a lot's slope exceeds 15%. Topographical detail is required on the site plan once slope exceeds 10%. Limits of Disturbance design is required on every site plan under Municipal Code section 11-14 and Land Management Code sections 15-7.3.2(J) and 15-7.3-3(H), regardless of slope.
Source: Park City Submittal RequirementsPark City FAQs
Can you work on Park City's steep mountain lots?
Yes — steep, rocky, schedule-sensitive sites are our specialty. We handle cut/fill, retaining walls, erosion control, and drainage engineered for the slope and the season.
Do you know Summit County's grading and stormwater rules?
Yes. Park City and Summit County have strict grading, erosion, and stormwater (SWPPP) requirements. We build to the approved plans and the inspections.
Does Cadoava handle excavation inside Park City's Soils Ordinance Boundary?
Yes. If your lot sits inside the mapped Soils Ordinance Boundary — the Prospector neighborhood and the Spiro annexation area — Municipal Code section 11-15-2 requires a minimum 6-inch cap of approved topsoil, defined as soil at or below 200 mg/Kg total lead, over any exposed ground. We manage the excavation, soil handling, and re-capping needed to pass the Building Department's Certificate of Compliance inspection.
Can excavation work continue in Park City during ski season?
Mostly, yes — Park City doesn't impose a blanket winter construction ban. But its Construction Mitigation Plan sets restricted work dates around peak-traffic events like the Sundance Film Festival and Presidents Day weekend, when grading, excavation, and deliveries need advance approval from the Chief Building Official. We sequence excavation and site work around that calendar so your project isn't stuck waiting on an exception request.