My question involves landlord-tenant law in the State of: California
I am renting an apartment and am in the middle of the lease.
For the past two weeks, the management company has been entering my apartment almost every day for unit showing. In most cases, there are multiple showings per day. They did serve me notices 24 hours before the intended entry. The notices were sent to me by email. They often send multiple notices a day (e.g., Today, I received a notice for entry on Friday, and another one for Saturday).
I understand the need to show the unit to prospective renters, but the frequency of the (intended) entries is in my opinion excessive (e.g., this week there are 5 intended entries, excluding today [Tuesday] when they attempted to enter even without having served a notice for today).
I am concerned that they are abusing the right of access.
Questions:
1) They served me the notice of entry by email. Email is not included in the CA Civil Code 1954 as a means of notice delivery. Therefore, is a notice sent by email legally effective for the purposes of entry into tenant's apartment for showing to prospective tenants.
2) They served me multiple notices a day for future entries. For example, I received two notices today, one for entry on Friday, and the other for Saturday. Is this appropriate/legal?
3) CA civil code states that the entry must be made during normal business hours. Could Saturday be classified under "normal business hours?". They served a notice for this coming Saturday between 11:00 and 6:00 p.m.
4) At any rate, considering that they have intended to enter my apartment for 5 days of this week (with the possibility of multiple entries per day), could this be considered abuse of right of access as mentioned in the CA civil code 1954 (c)?
Your opinions are much appreciated.
Thank you.

