According to our records, this business is located at 1420 Central Blvd. in Brentwood (in Contra Costa County), California 94513, the location GPS coordinates are: 37.932048 (latitude), -121.716986 (longitude). Flagg Building Improvements is categorized under Bank Building Construction (SIC code 1542). Known organization owner is David Flagg. Current estimates show that the unit has a sales volume of $6,132,000 and staff of approximately 14 people. You can contact the company by phone at (925) 516-2206; the following fax number is also provided: (925) 516-1102.