L & M Underground, Inc.Excavating contractor in Denver, CO

L & M Underground, Inc. is ranked #36 of 132 excavating contractors in Denver by CR Score, with 54 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.

L & M Underground, Inc. is open Monday to Friday. Its listed hours are Monday to Friday, 7 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves Denver and 12 towns within 25 miles: Twin Lakes, Berkley, Sherrelwood, Westminster, Federal Heights, Welby, Shaw Heights, Commerce City, Thornton, Arvada, Wheat Ridge and Northglenn. 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.

L & M Underground, Inc. has a rating of 4.8 from 12 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 L & M Underground, Inc. on (303) 933-1970. The business is at 1830 W 64th Ln # B, Denver, CO 80221. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.