Foundation Excavation & Backfill
Northern Colorado Excavation Contractors
Ace Septic & Excavation is a Northern Colorado-based excavation company serving the Front Range, including Weld County, Larimer County, Boulder County, and Jefferson County. We work with homeowners, general contractors, and builders to tackle extensive construction and land projects, including new builds, additions, outdoor living spaces, and septic system replacement.
Let us bid your next project! Discuss your plans with us by giving us a call or sending us a message online.
Region-Specific Excavation Solutions: Preparing for a Successful Build
From clay-heavy to rocky soils, we’ve dealt with it all. Our region-specific approach builds upon our experience with Colorado’s terrain, from mountain properties in Boulder to variable soils throughout Northern Colorado.
Expansive Clay & Variable Soils
Colorado’s clay-rich soils can expand and contract with moisture, creating challenges for foundations and drainage. We plan, dig, and prepare sites to prevent shifting and settling, giving your build a stable start.
Rocky Terrain & Foothill Sites
Excavating in the foothills and rocky mountain lots requires specialized equipment and techniques. We carefully break through rock layers and grade surfaces to create level, build-ready sites.
Over-Ex
When soil conditions aren’t suitable for building, over excavation provides a stable foundation. We can treat and replace existing dirt in controlled 9″-12″ lifts for testing by a soils engineer or bring in structural fill to bring it to grade.
Serving The Northern Colorado Front Range
Ace Septic & Excavation is a residential excavation contractor specializing in residential site prep, land development, and septic system installation throughout Northern Colorado.
Serving homeowners, builders, and general contractors, we work in:
- Weld County — Including Windsor, Evans, Mead & Erie
- Larimer County — Including Fort Collins, Loveland, Timnath & Berthoud
- Boulder County — Including Boulder, Longmont, Lafayette & Superior
- Jefferson County — Including Golden, Lakewood, Wheat Ridge & Morrison
Get an Estimate on Your New Construction Project
Our team provides complete foundation excavation and backfill services to get your property construction-ready. Send us a few details about your project or give us a call to discuss your needs and receive a clear, detailed estimate.
Our comprehensive estimates cover every step of site preparation—from permits through project completion—so you can expect transparency, fair pricing, and no hidden fees. Looking to add Ace Septic & Excavation to your preferred contractor list for future projects? Let’s discuss how we can support your builds.
- We Handle All Permits
- Full-Service Site Preparation & Foundation Excavation
- Local to Northern Colorado
- Free Inspections & Estimates