404 Aviation Blvd, Santa Rosa, California, 95403 Phone: (707) 547-1900; Fax: (707) 524-3782 PROJ/ Sonoma Valley County Sanitation District Treatment Plant Roof Replacement (Administration and Maintenance Buildings) 70-712-7 #21 BID SUMMARY Sonoma Valley County Sanitation District Treatment Plant Roof Replacement (Administration and Maintenance Buildings) Bid Opening: 5/27/25, at 2:00pm Engineer’s Estimate $281,200 Bidder, City, State Total Contract Bid Price Stronger Building Services, San Leandro, California $373,000 Roofing Constructors dba Western Roofing Service, San Leandro, California $449,239 Diablo Roofing, Oakland, California $301,068 $ $ $ $ Contractors: Please email Gretchen.Martinez@scwa.ca.gov requests for a list of subcontractors. 1
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