Trusted Excavation Company Serving Boise and the Treasure Valley

Residential and commercial excavation done right, from drainage and grading to trenching and retaining walls. Free estimates across the Treasure Valley.

Excavation Services Built Around Your Site

Services tailored to you

Whether you are breaking ground on a new build or fixing a drainage problem that keeps coming back, A4 Excavation handles the dirt work that sets everything else up to succeed. We serve homeowners and commercial property owners across the Boise area with a straightforward, do-it-right approach. Here is what we do:

  • Water Mitigation: Drainage grading and water management to move water away from structures and stop pooling and erosion.

  • Excavation & Trenching: Site digging and trenching for utilities, drainage, and site prep.

  • Foundation Excavation: Digging and site prep for foundations (excavation and prep only, no pouring).

  • Earthworks: Grading, cut and fill, and land leveling to prepare a site for construction or landscaping.

  • Retaining Walls: Retaining wall installation for slope stabilization, terracing, and erosion control.

  • Landscape: Landscape grading and ground preparation for finished outdoor spaces.

No two sites are the same, so we scope each job to the ground in front of us rather than a one-size template. Reach out and tell us what you are working on.

Why Property Owners Choose A4 Excavation

Most excavation outfits in the valley lean either residential or commercial. A4 works across both, which means the same crew that grades a backyard can handle a commercial utility dig.

  • Residential and commercial work under one roof
  • Free estimates on every project
  • Owner-led, hands-on jobs

From the first walkthrough to a clean, level site at the end, we aim to make the whole process easy.

Our Reviews

Water Pooling or Ground Sitting Unstable?

Our drainage and grading crews solve it at the source

Standing water against a foundation, a yard that never dries out, or soil that keeps sliding are not problems that fix themselves. A4 Excavation regrades and reroutes water so your property drains the way it should. If the ground is working against you, let us take a look.

Planning a Build or Site Project?

Count on our team for excavation, trenching, and site prep done right the first time

No Job Too Big or Too Small

Whether you need a single trench dug for a water line or a full site graded before a foundation goes in, A4 Excavation has the equipment and the crew to get it done. We handle the messy, foundational work so the rest of your project can move forward on solid ground.

Dealing with a drainage issue or water damage that needs fast attention? Water mitigation is one of our core services. Reach out and we will get you on the schedule.

Frequently Asked Questions

What areas do you serve?

A4 Excavation serves Boise, Meridian, Nampa, Caldwell, Star, Kuna, Middleton, and Eagle, including the North End and Boise Bench neighborhoods. We work across the greater Treasure Valley for both residential and commercial projects.

Yes, A4 Excavation is a licensed and insured excavation contractor serving the Boise area. 

We offer water mitigation and drainage, excavation and trenching, foundation excavation (digging and prep), earthworks and grading, retaining wall installation, and landscape grading.

Yes. A4 Excavation provides free, no-obligation estimates for excavation projects across Boise and the Treasure Valley.

Yes. A4 works across residential and commercial excavation, from backyard grading and drainage to commercial utility digs. That hybrid range is one of the things that sets us apart in the Boise market.

Ready to Break Ground?

Tell us about your project and we will get you a free estimate for excavation, grading, or drainage work anywhere in the Treasure Valley.

Contact Us