About Us

1950s dodge work truck classic red

QUALITY CONSTRUCTION FOR MORE THAN 40 YEARS

In the fall of 1975 the Treasure Valley was going through a building boom. Keith Spiers, 34 years old with a wife, 3 sons and a 3rd on the way saw himself in the dead end job with no future and decided to take a risk going into debt on his first tractor, he worked daylight till after dark 7 days a week to stay ahead. With some good advice & encouragement from friends, his determination and hard work paid off.


Today with 3 divisions, commercial, residential & concrete, Spiers Construction is well established and stands for quality and honesty. Keith's original standard of always do it right and deliver more than expected is carried on today by his son Darren. The company now does all phases of excavation, concrete, septic systems, large and small, septic design, retaining walls and hillside work. Spiers Construction is public works licensed, complex septic licensed, and also Oregon licensed.

- Keith Spiers

Spiers Construction is a family owned business that holds dear to the same standards as your family does, with the professional ethics that makes a company great.


If you need ground work of any kind, or have concrete foundations and flat work needs or want decorative retaining walls to show off your home or business, Spiers Construction would like to be a part of your project. Large or small projects are completed with you satisfaction guaranteed.
- Darren Spiers

1950s dodge work truck classic red

We Still Play in the Dirt!

Spiers Construction has been a locally owned excavation and concrete construction company in Caldwell, ID for more than 40 years. Whether you want us to work on all phases of an excavation job or install concrete, septic systems large and small, we have you covered!

Our Motto

Do It Right & Deliver More Than Expected

Excavation • Concrete • Septic

Construction Worker

Call Us Today for a FREE Estimate