According to our records, this business is located at 3355 Tripp Rd. in Woodside (in San Mateo County), California 94062, the location GPS coordinates are: 37.428945 (latitude), -122.276096 (longitude). O Nelson & Son is categorized under Dozer Services (SIC code 1794). Known organization owner is Harold Nelson. Current estimates show that the unit has a sales volume of $1,590,000 and staff of approximately 10 people. You can contact the company by phone at (650) 851-3600; the following fax number is also provided: (650) 851-5714.