Your #1 Choice for Excavation, Septic & sewer in Fort Collins, Loveland & Northern Colorado

Welcome to Boonstra Excavation

Boonstra Excavation, LLC, is a locally owned company specializing in excavation, septic systems, and sewer lines. We serve homes and businesses in Fort Collins, Loveland, Boulder, Greeley, Longmont, and the Northern Colorado Front Range.

With over 20 years of heavy equipment operating experience, we get your excavating job done right – from below ground, on up. We handle jobs large and small, from home improvements, remodels and additions, to site development and grading for new construction.

We offer comprehensive septic system services, from inspections and pumping to repairs and installation, as well as sewer line repairs and installation.

Please contact us for an estimate or appointment. We’re happy to answer any questions about our services or your project needs.

Boonstra Excavation is licensed and insured, and will handle your job with safety, quality, and integrity.


Local Excavation Contractor

We provide full excavating services in Fort Collins, Loveland, and across Northern CO, for both commercial and residential projects.

Site Preparation & Development

From homeowners who need excavating for landscaping, additions, and other projects, to developers and construction contractors , you can trust Boonstra Excavation. Leave it to us to do your site clearing, excavation, material hauling, and backfilling, safely and efficiently.

Site Grading

We handle site grading to ensure proper drainage and slope for residential properties, driveways, access roads, and utilities, as well as public spaces like parks and playgrounds. 

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. Inspection and final county and engineer approvals as required.


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 for homes, commercial sites and municipal mainlines.

Other Services


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

Let’s Get Your Project Moving.




Our site preparation includes obtaining the right permits from the municipality the site is located in.

Engineering and design, including soil testing

Soil testing is essential for everything from septic systems to backfilling. And we know the importance of a complete, professional excavating plan.

Inspection and final county and engineering approvals

We handle final inspections and approvals by the municipality. We ensure safety, quality and customer satisfaction, whatever the size of your project.

Expert Excavation Services in Fort Collins, Loveland and Northern Colorado

We’re a professional excavation company, experienced and licensed in your local area. Here are some 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
  • Longmont 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