Short answer: Pick an earthwork contractor that self-performs with its own equipment and crews, understands local clay soils and stormwater rules, prices to the plans with clear assumptions, and can show similar commercial work. The lowest number rarely stays lowest once rock, wet soils and import/export show up.
1. Self-performed or brokered?
Ask who owns the equipment and who runs it — dozers, excavators, scrapers, compactors, trucks, GPS grade control. Self-performing contractors control schedule and avoid stacked markups.
2. Experience with St. Louis soils
Fat clays and moisture decide whether a pad passes proctor tests. Look for talk of drying/discing or soil stabilization, undercut-and-replace vs. stabilizing in place, winter and spring working windows, and rock/shale in parts of Jefferson and St. Louis counties.
3. Cut/fill balance and dirt management
Ask how quantities were calculated, whether the site balances, where export goes and import comes from.
4. Stormwater and permitting
Most commercial sites need a land disturbance permit and erosion/sediment control. Ask who installs and maintains silt fence, inlet protection and construction entrances, and who handles inspections.
5. Utilities and trenching in the same scope
Sites move faster when one contractor handles mass grading plus storm, sanitary and water lines. Ask whether they self-perform site utilities and trenching, and how they verify existing lines.
6. Safety program
Ask for EMR, trench safety approach (sloping, benching, trench boxes) and competent-person assignments.
7. Clear proposals
Quantities, unit prices for undercut and rock, testing responsibility, dewatering, import/export assumptions and exclusions.
8. References on similar projects
Comparable size and type — industrial pads, data centers, subdivisions, municipal work.
Quick checklist
- Self-performs with owned equipment
- GPS machine control and layout
- Wet-soil/stabilization plan
- Clear cut/fill and haul assumptions
- Land disturbance and SWPPP experience
- Self-performs trenching and site utilities
- Documented safety program and EMR
- Unit prices for undercut and rock
- References on comparable projects
Planning a site in the St. Louis region? See our earthwork services, recent projects, or request a bid.
FAQ
- What does an earthwork contractor do?
- Clearing, stripping, mass excavation, cut and fill, building pads, fine grading, and often trenching, utilities and erosion control.
- Earthwork vs. excavation contractors?
- The terms overlap; earthwork usually means moving and compacting large volumes to grade, excavation can also mean digging for foundations or utilities.
- How long does earthwork take?
- Depends on acreage, soils, weather and balance — weeks for small pads, months for large industrial sites.