Top Excavation Company in Boulder, CO

Welcome to Boonstra Excavation

Boonstra Excavation is an excavating company now serving the Boulder area of Colorado.

With more than 20 years of expertise in operating equipment, we ensure that your excavating job is executed seamlessly, starting from below the ground and working our way up. Whether your project involves demolition, excavation, or new home construction, Boonstra Excavation is committed to handling jobs of all sizes with the utmost dedication to quality, safety, and integrity.

We are fully licensed, insured, and thoroughly experienced in residential and commercial excavating.


Local Excavation Contractor

We provide full excavating services in Boulder including:

Site Development & Preparation

For your building site development needs, you need an excavating company you can trust. Leave it to us to do your dirt moving, material hauling, site excavation, backfilling, and more, safely and efficiently.

Site Grading

Site grading allows us to grade for proper drainage and slope prior to or after construction. Our excavating crew handles everything from concrete driveways and new access installs to complete prep for a road.

At Boonstra Excavation LLC, we are in business to ensure every excavating and related service is done as promised, the right way.

We take care of your excavating and earthworks projects from start to finish:

  1. Permitting and approvals for each of our excavation services
  2. Engineering and design, and soil testing of the individual project
  3. Professional install using our certified excavating professionals
  4. Inspection and final county and engineer approval


Septic System


We have expertise in gravity flow, pump, dosing pump and dosing siphon systems.

Water / Sewer Line


We replace, install, and repair the underground utilities of residential houses, commercial sites and municipal mainlines.

Other Services


We provide many other quality services from land clearing and development to demolition and trucking.

Let’s Get Started On Your Project Today

In Need of This Service Elsewhere?

We’re a professional excavation company, experienced and licensed in your local area. Tackle your earthwork and excavation needs using a fully insured contractor you can trust with your construction project. Contact Boonstra Excavation today. Here are just a few of the areas we serve:

  • Bellvue CO
  • Berthoud CO
  • Boulder CO
  • Dacono CO
  • Drake CO
  • Eaton CO
  • Estes Park CO
  • Evans CO
  • Firestone CO
  • Fort Collins CO
  • Fort Lupton CO
  • Frederick CO
  • Gilcrest CO
  • Glen Haven CO
  • Greely CO
  • Johnstown CO
  • La Salle CO
  • Laporte CO
  • Livermore CO
  • Loveland CO
  • Masonville CO
  • Mead CO
  • Milliken CO
  • Pierce CO
  • Platteville CO
  • Red Feather Lakes CO
  • Severance CO
  • Timnath CO
  • Wellington CO
  • Windsor CO