is information is required by CC § 1962, whether you obtained title to the property by purchase at a foreclosure sale, ordinary purchase, or inheritance.

The month to month lease I inherited is silent on responsibility, but the PM company deferred to the local law.  

One big downside of buying the shares of the business is the buyer inherits the existing cost basis of the assets and the accumulated depreciation ... and would be on the hook for any recapture if/when the asset is sold.   

According to inherited tenants at one of the properties, frozen pipes are an annual occurrence ... so we have some air sealing work to do next summer.However, we have one building, which had no issues last winter.  

I have now unknowingly inherited a lease and a tenant about which I was not given the opportunity to educate myself.

I don't mind inheriting a tenant, but what can I do about raising the rent amount?

If owner of a property went into foreclosure and left a good tenant, re-screen if necessary and be happy you inherited a good tenant.If tenant is the one in foreclosure, they're unlikely to afford the rent if they already couldn't afford the mortgage.

If this seller isn't entertaining low ball offers, it sounds like a cash buyer who bought on speculation or the seller inherited the property and doesn't want to sink more money into deal via repairs.

Not to accept inherited tenants anymore.

One way you might lessen that is to re-do your lease and charge your mom more in rent.