Excavation Companies Boise

Excavation Contractors

Spiers Construction is the professional full service excavating company you can depend on. We have knowledgeable staff ready to work with you from beginning to end of your excavation needs. We go to your site and determine how to best move forward with the design of your project. 

Boise Excavating Company

We have Caterpillar equipment with top of the line, Dual GPS Grade Control Systems. We combine the plan, design surfaces, and grade & alignments inside the cab of the dozer making Site Design and Development process streamlined and accurate.

Residential & Commercial Excavating

  • Complete Site Design & Development
  • Residential & Commercial Site Work
  • Grading Services
  • Building Pads
  • Roads
  • Parking Lots
  • Land Clearing
  • Demolition
  • Rough Grading
  • Finish Grading
  • Hauling Dirt, Gravel, Rock
  • Erosion Control
  • Storm Water & Sanitary Septic Installation
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Excavation Land Picture
Excavation Construction Land Picture

Treasure Valley Construction Services

We realize that our clients are the reason for our success. Thus, we do whatever it takes to have happy clients throughout and following each job. This not only creates return customers but often times leads to referrals. 

If you would like to do business with a company who values the importance of customer satisfaction, respects timelines, and understands budgeting, then call 208-453-9229 and talk to one of our licensed excavating contractors.

Site Work Contractor

backhoe contractor Boise

New Home Excavation

If you need a backhoe contractor in Boise, we are your earthmoving experts. Building a new home, or digging a swimming pool in your back yard, excavation involves pro planning. We have the technical skills to create a solid base to construct your project.

private road builder Boise

Private Road Builders

Sometimes it's hard finding contractors to work in the mountains, but this is where we thrive. We can build a road to your cabin, clear the building site, & move some dirt. Grading, stormwater design, and erosion control can all be done by Spiers.

rock wall builder

Retaining Walls & Landscaping

After removing all the rock and materials, we can put things back together again like nature intended or work with your ideas. We specialize in steep slopes or hillside homes. Please take a minute and browse our Image Gallery.

Testimonial 1

Shannon White

Garden Vally, Idaho

Thank you to the Spiers team, they were masters at moving dirt and rock, digging trenches and rebuilding the runoff areas of our property. I know Mike usually does commercial projects but we are so glad he was assigned to dirt removal. Also appreciate the timeliness of the support they received in equipment operators to haul off debris and deliver gravel.

Testimonial 2

Doyle Moore

Boise, Idaho

Darren Spiers is owner, and I have had pleasure of working with him on two jobs. Always available (via phone), flexible, and fairly priced. All his crews also have the "I like working for Darren" attitude when on our property. I highly recommend.

Testimonial 3

Brad Deegan

Eagle, Idaho

I hired Spiers for a private road and lot excavation I needed into my cabin north of Featherville, near Pine. No way was I going to build a road on the steep mountain. Even after the horrendous deep snow, my rockwall landscaping and grading made it thru the water melt off.

Testimonial 4

John Levin

Nampa, Idaho

As a home builder in SW Idaho, we depend on Keith Spiers and his expertise of septic systems. They design our drainage and install the concrete septic tanks. We also use them for bulldozer and backhoe work. One of the best of Boise.

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