Legal Question in Real Estate Law in California

Normally, the lease or rental of a house includes the yard, garage, etc., so normally a landlord cannot put up a fence between the house and part of the yard and rent or give use of the yard space to anyone else. However, leases vary, and yours may contain some provision that expressly or impliedly permits this. This would be unusual. More likely, the landlord is trying to take advantage of you.

I agree with Mr. Whipple. If you have leased the entire property, he cannot take it away from you and give it to someone else. You should have your lease reviewed by an attorney, as it appears your landlord is in breach of your lease.