I plan to sell my condo in San Mateo County, CA. How much notice do I need to give my tenant to move out? 30 or 60 days notice? She is on a month to month contract.

With a month-to-month you only need to give a 30 day notice, at least in Illinois.

Under California's new law the amount of notice depends on the amount of time the tenant has lived there. Go to http://www.dca.ca.gov/legal/landlordbook/2007_update.pdf for more info.