CMK ExcavationExcavating contractor in Union, MO

CMK Excavation is ranked #1 of 27 excavating contractors in Union by CR Score, with 57 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

CMK Excavation is open Monday to Saturday. Its listed hours are Monday to Saturday, 7 AM – 5 PM. On Saturdays it is open 7 AM to 5 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves Union and 7 towns within 25 miles: Washington, Pacific, Sullivan, Eureka, Wildwood, Ellisville and Weldon Spring. The list is based on the business's location and the usual service radius for excavating and grading. Confirm your address is covered when you call.

CMK Excavation has a rating of 4.9 from 16 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call CMK Excavation on (636) 303-9831. The business is at 1096 US-50, Union, MO 63084. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.