Samantha,During the reading of the books from BP, the authors recommend to join a investor's club.

I do hate to say, but I agree with the author.

There is a standard one page form that the owner must sign authorizing this. 

If the primary person doesn't have the legal authority to sell for the others, then you need All of the heirs signatures.

The seller might request you provide your articles of organization showing the person signing has the authority to bind the corporation to an agreement.

And out of all the monthly reports, 2 have glaring errors which I need to clarify. 4) PM claims that tenant will bring up to the city authority and refuses to pay rent.

Can anyone suggest where I might look (website, hotline, housing authority) to find the most accurate information about landlord and tenant rights in my area, and where to find out if a certain property is rent controlled? 

Question for appraisers or anyone who has knowledge on this type of situation:We purchased a home at a trustee sale and learned after there was a Housing Authority Restriction.

Keep in mind the taxing authorities take averages of similar properties in your area to arrive at a taxable value.

Authorized occupants cannot be held responsible for rent or damages, need to be added as tenants for that to happen.