Can A Landlord Owning A Triplex In A Rent Control City Arbitrarily Raise One Tenants Rent Without Raising The Other Two? The Same Questin With Both The Annual Reg. Fee And SCE Fee.

I have lived in a triplex in a rent control city. I've been here 14 years. Those in the other two units have been here at least a year. The new landlord bought the building about 12 years ago. I currently pay almost half of what the other tenants pay. Every year since they bought the place, they have raised my rent 3 % until recently when it went to 5%. I also am the only one paying both the annual reg. Fee and the SCE monthly fee. I feel as if I'm being discriminated against.