@Daniel M. - I think prior to a walkthrough the seller has little/no relationship with you as a potential buyer, so I wouldn't expect more than a rent roll and a list of expenses. I would be on the lookout for the current condition of the units and building while you're walking through to assess how well it's maintained. If you think you like the opportunity I would then ask for other documents to verify the expenses, including utility bills and Income and Expense statement. After you have an agreed upon price and a contract, I would then ask for the remainder of the documents you reference, but would not be surprised if you don't receive maintenance records of capital improvements. You absolutely need to get copies of all the leases, AND, before closing I definitely suggest you get estoppel agreements signed by the tenants verify their current rent, security deposits, and any other important terms. (I recently bought a quad and found out that two tenants did not have security deposits on file) Good Luck!