The county accepted 478 acres of coastside land donated by the Peninsula Open Space Trust to expand the 40-acre Quarry Park.
The land, commonly known as Wicklow, is located about four miles north of Half Moon Bay east of Highway 1 in El Granada.
“This is great news for anyone who enjoys the outdoors,” Supervisor Don Horsley, whose district includes the coastside, said in a prepared statement.
POST initially preserved the Wicklow property in 2002 after receiving a 462-acre donation from Bay Area builder Mike O’Neill and his family. It is named after the county where he grew up in Ireland.
The scenic land was previously used for cattle grazing and up to four luxury estate homes could have been built there had the owners opted for development over donation.
The existing facilities like parking and restrooms at neighboring Quarry Park make for a natural gateway to the Wicklow addition, said Parks Director Marlene Finley.
The transaction is expected to be complete within the next four months if not sooner.