Sorry, but this won’t match up exactly with the trial you were on. It’s more complicated than that.
@glenblank was the first person to notice why why this land wouldn’t fall under California Constitutional Law. (@some_guy - what I’m about to write explains why decisions about this land won’t set precedent for general CA state law.)
I posted a link above to an Oct 2013 article, explaining that this land is rancho property deeded from prior to the Mexican-American War. Because the deed predates California, the land has no public easement at the shore. Also, the deed was tested after California became a state, and found to be sound - so the lack of easement was upheld by the Supreme Court in 1859. (California became a state in 1850.)
The original owner of the property was Jose Maria Alviso, who received a provisional land grant from the Mexican government in the late 1830s. He later transferred the property to his brother, Jose Antonio Alviso, whose rights to the property were upheld under the 1848 Treaty of Guadalupe Hidalgo, which settled the Mexican-American War. The U.S. government challenged Alviso’s land patent, but the Supreme Court confirmed Alviso’s ownership in 1859.
That means this piece of land may be unique because the lack of easement is original to the deed. The shore was included in the property. You can’t force private landowners to make their private land publicly accessible - unless of course you use eminent domain - and that’s what this argument is coming down to, there’s already a bill in the works.
The reason for the bill is that beach in this case is surrounded on both sides by steep cliffs, so even areas not specifically owned by Khosla are prevented public access by his private landholding. There’s no safe way for people to make land on the beach, except via the road. This court document from an April 2014 decision clearly states that the Spanish deed doesn’t preclude the state’s right to acquire the land or make some coastal access available.
The only access is via the road running through his property. There’s currently a bill pending to acquire Martin’s Beach Rd. (or make a different access road) via eminent domain. Here’s SB-968, which is currently on Governor Brown’s desk.
I have found a good timeline on public access, and it shows a public use history starting in the 1930’s. That helps the argument that this beach is considered “public” and was at the time it was purchased by Khosla. Another plus for that argument - Khosla left the gates unlocked the first two years he lived there, and is now complaining it’s due to cost that he closed them. If the question is cost, then he needed to speak to the state about reimbursement for the use of his land - not lock the gates. If the argument was that it was a private beach, the gates should have been locked for the first two years he lived there.