Ok thanks for the advice, will do. Just on a side note, actually the landlord can get rid of the tenant if the landlord does not want to renew the lease with the tenant. According to california tenant law:
Special rules may apply in cities with rent control. For example, in some communities with rent control ordinances, a periodic tenancy cannot be ended by the landlord without a good faith "just cause" or "good cause" reason to evict. In these communities, the landlord must state the reason for the termination, and the reason may be reviewed by local housing authorities.
207 However, incidents of domestic violence may not be used as a violation by the victim or threatened victim as good cause for the landlord to terminate the tenancy, occupancy rights or assistance of the victim.208
The landlord must give the tenant a three-day or 30-day or 60-day notice of termination under California law (see "Written Notices of Terminations"), and both the landlord and the tenant must give the public housing agency a copy of the notice.209 What if the landlord simply decides not to renew the lease, or decides to terminate the HAP (housing assistance payment) contract? In this case, the landlord must give the tenant 90 days' advance written notice of the termination date.210 If the tenant doesn't move out by the end of the 90 days, the landlord must follow California law to evict the tenant.211
http://www.dca.ca.gov/publications/landlordbook/moving-out.shtml#footnote210
by any chance would you know if a 90 day notice to vacate given from the seller would roll over to me after escrow ends?