According to our records, this business is located at 3865 Carnegie Dr. in Oceanside (in San Diego County), California 92056, the location GPS coordinates are: 33.200293 (latitude), -117.299485 (longitude). Granahan Construction Co is categorized under Hotel/Motel and Multi-Family Home Construction (SIC code 1522). Known organization owner is John Granahan. You can contact the company by phone at (760) 757-7870.