Hello Wesley,
We buy occupied multifamily (2-4 unit) properties, and what you are asking for would be unheard of in our market.
Copies of Current COs- I can look these up online where I am, but expect them to give me the certificate at closing.
Copies of Lease agreements- I like to get these when we make an offer, or sooner. I am lucky if I can read the names on the lease (sometimes they are handwritten) and sometimes the seller gives us tenant cell phone numbers at closing.
Certified Rent Roll w/ security deposits- I have never received these
Year's Worth of Water/Utility Bills- I simply call the utility companies when we are considering a property to get the average bill over the last year. They won't tell me who is paying but usually will let me know if the same name is on all the bills (ie the landlord is paying for utilities).
Trash bills- not applicable to us since it is included in the taxes, but I would think you could talk to the provider about the average bill
Latest tax statement- I can get this info online (and it is usually in the listing) plus the amount will change when the property changes hands
Estoppel Certificates- I have never asked for these. Typically the seller sends out a letter to the tenants introducing us as the new owners, and I give them a letter (usually during the walk through the day we close) stating that we are purchasing the property with our contact info, how to pay, and letting them know their lease is still valid. In this letter I confirm major points of the lease- rent amount, security deposit amount (and let them know it will be transferred to us and where it will be deposited), end date.
So basically, if I can get the info elsewhere, I do. Usually the sellers are "done" with the property before they even put it on the market, so why not make the process as painless as possible? I save the arguments for when we find a discrepancy, or when we want the price lowered due to an issue we find during inspection.
This type of thing may vary from place to place, so likely your realtor knows what is typically communicated in your area if he is active in this type of market.
I hope that helps, and I hope you get a great deal to stick soon!
Kelly