@Carlos PtriawanPlease provide support to your claim that rent is more volatile than values.

Is your main goal with this property cash flow while providing a home for your mother?

Vacancy control prohibits rental housing providers from adjusting rents to market rates when a tenant moves out.

I provided a proper notice of entry for a couple days later and he denied me access. 

Not even up for debate.... bye Felicia....I would not renew and unless required by law in your state I would not provide a WHY....providing a WHY only opens the situation to a rebuttal and attempt at persuade you to change your mind.

Don't mean to be a debby downer, but want to provide honest feedback.

I am the sole provider for our home. 

Your protection is language in your purchase contract requiring the deed provide you marketable title in fee simple and a professional title search and title insurance to cover you.

However its often easier to entrust those who do this as a business to buy the assets and provide you with a solid return. 

One of the stipulations for the sale was to provide effort to remove 2 problem tenants in the building.