I have experience litigating adverse possession, and recommend you contact me for a consultation immediately.

Also see my website for some general info on squatters rights at

http://www.danielbakondi.com/San-Francisco-Real-Estate-Attorney.htm

Best,

Daniel Bakondi, Esq.

danielbakondi@yahoo.com

415-450-0424

The Law Office of Daniel Bakondi, APLC

870 Market Street, Suite 1161

San Francisco CA 94102

http://www.danielbakondi.com

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There won't be any adverse possession here. The guy was given permission, and that removes the essential element of adversity. Further, one must pay the property taxes to have a claim for adverse possession (i.e., squatter's rights) in California, and I'm sure he hasn't done that. He may (although unlikely) make a claim that you'd have to defend, but you'd win.

I agree with Mr. Whipple. "Squatter's rights" is what lay people use to refer to the legal doctrine of adverse possession. Adverse possession is defeated by consent, and by a failure to pay property taxes. If you or your owner have been paying property taxes, he does not have a valid adverse possession claim.

Since he arrived with the original owner's consent, you will need to follow proper procedures to have him evicted.