Drainage Pros, Inc.
Long-running, BBB-accredited drainage and sump specialist; BBB documents flood-related garage and lower-floor work and 43 years in business.
Who runs it
- Richard C. Mariani ✓ Owner/CEO/director
Credentials & verification
- State license
- C-27 #512288, unverified, re-check with board
- BBB
- [object Object]
- Years in business
- 43
Services
Service area
San Francisco Bay Area · Alameda County · Contra Costa County · Marin County · Napa County · San Francisco County · San Mateo County · Solano County · Sonoma County
Our verification notes
Independent listings still associate the company with Walnut Creek, while the current company contact page gives a Vacaville address. Confirm the dispatch location and current service radius. No reliable Google rating/count or FEMA/CFM evidence found.
Sources checked
- BBB business profile and CSLB number
- California Secretary of State-derived filing profile
- Independent contractor/permit profile
Last verified 2026-07-14. This is an independent listing, not an endorsement, and we are not affiliated with Drainage Pros, Inc.. Confirm the current license, insurance and references directly before signing any contract.
← Flood risk & providers in California (Central Valley & Coast)