Hammer Engineering LLCExcavating contractor in Santa Rosa, CA

Hammer Engineering LLC is ranked #14 of 34 excavating contractors in Santa Rosa by CR Score, with 52 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.

Hammer Engineering LLC is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 4 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves Santa Rosa and 10 towns within 25 miles: Sebastopol, Windsor, Healdsburg, Larkfield-Wikiup, Roseland, Rohnert Park, Cotati, Calistoga, Cloverdale and Petaluma. 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.

Hammer Engineering LLC has a rating of 5.0 from 3 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 Hammer Engineering LLC on (707) 494-4763. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.