Legal Question in Landlord & Tenant Law in California

Re: 45-day notice

Absolutely. A lease is a contract between two parties. If the parties agree to 45-day notice, the law isn't going to have a problem with that. Your only argument would be that it's an unconscionable term, that based on the relative bargaining power of the parties, you had to agree to the term and the term in somehow punitive or unfair. Since 30 days is standard, it doesn't seem that 45 days is a grossly unfair condition on the tenant. If it is such an issue, there are plenty of places that will rent on 30 days notice.