According to our records, this business is located at 775 Seaport Blvd. in Redwood City (in San Mateo County), California 94063, the location GPS coordinates are: 37.5026521 (latitude), -122.2107766 (longitude). Harbor Sand & Gravel Inc is categorized under Paving Mixtures (SIC code 5032). Known organization manager is Syl Lamacchia. Current estimates show that the unit has a sales volume of $19,200,000 and staff of approximately 40 people. You can contact the company by phone at (650) 369-9189; the following fax number is also provided: (650) 369-6026. Business website can be accessed at www.rmcpacific.com.