This is a tricky question. Technically, you can share a vacation after a divorce in California. However, there are a lot of details to iron out before this can even happen. It all starts when you are in court working out your divorce agreement and heavily relies on your finances. Second Shelter explains that a vacation home is treated just like any home you own in a divorce.
So, if you have a mortgage, you are both responsible for it. If you can still pay the mortgage, then you can keep the home. If you cannot, then you may have to sell it. The judge could give the house to one of you, leaving the other without any rights. It all depends on what you ask for and what the court decides.
You could end up jointly owning the home, and therefore, both being able to use it. This brings up other issues, though. Can you afford to maintain the property? Who will be responsible for the bills and other expenses related to keeping the home? You will have to work out all those details. Not to mention, you will also have to set up a schedule for use of the home.
You should work out all the details in court as part of your divorce agreement. This is especially true if your divorce is not a friendly one. You want to have that legal standing to fall back on if your spouse is not following the rules or if other issues come up.
So, the bottom line is that you can share a vacation home after a divorce, but it probably will not be an easy task. This information is for education and is not legal advice.