DeKoster Excavating, Inc. has been in business since 2000.  Owned by Derek & Sarah DeKoster, the business was started with only one backhoe. Since then it has grown and has added more equipment, trucks, employees and most recently,  a gravel pit, to become the successful excavation company it is today. With competitive rates and the machines to get the job done, give us the opportunity to work with and for you - contact 360-815-7129 


Our History

trucks and trailers

2: 310 backhoes

2: 650 bulldozers

2: 644J John Deere front end loader

1: 544J John Deere front end loader

3: Rollers

Breaker attachment for excavator

10: Service trucks


DeKoster Excavating

Our fleet


2000 Kenworth transfer truck with pup

2006 Kenworth with 4 axle pup trailer

2018 Kenworth with transfer trailer

2019 Kenworth with transfer trailer

Water truck

3 axle equipment transport tilt trailer

dump trailer

2; 2 axle tilt trailer

deck over trailer

2: 35 John Deere mini excavators

2: 50 John Deere mini excavators

1: 85 John Deere Excavator

1: 120 Hitachi Excavator

3: 135 Hitachi and JD Excavators

1: 160 Hitachi Excavator

1: 210 Kobelco Excavator

1: 245 Hitachi Excavator

1: 350 Hitachi Excavator

​1: 345 Hitachi Excavator