California does not recognize common law marriages
. Without a marriage license, he is not your husband and is not entitled to any community property
(50%). The most he would be entitled to is his amount of contributions to your property (with proof of contributions) otherwise his contributions can be treated as gifts (or rent if he agreed to contribute as a condition to stay at your property).
60 Days is plenty of time. If he fails to vacate the next step would be to file an unlawful detainer action to evict him. You will be given a judgment and he will have about 3 to 5 days to voluntarily leave before the sheriff can be used to "escort" him out. You would need to resend a new 60 days notice because your agreement to work things out meant you changed your mind with the request to vacate the first time around. Make sure you keep copies of everything you send and have a third party (who can serve as witness) give him the notice to vacate (to avoid possibly lying on his part).
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