Back billing would be quite a bit cheaper, but you still need to install meters.  

They're fine for rentals in my opinion and easy to install. I

we buy hi eff Goodmans from acwholesalers & install them ourselves.

Sale ContractReal Estate Transfer Disclosure Statement (shouldn't be many given that it's raw land)Natural Hazard Disclosure StatementCredit Information Form (I am open to financing up to 60% of selling price)Installment Land Contract (If I do indeed finance the property)Offer To Purchase Real PropertyCounteroffer To Purchase Real PropertyAcceptance Of Purchase OfferDeposit ReceiptContingency ReleaseI imagine a Title company needs to be involved to assist with processing the change of title documents and hold funds in escrow.

We are replacing an essentially new vinyl floor, which was installed within 30 days of closing.

(This should have been updated via the specials tax each owner is paying)Have thought if you could get the electric company to install separate meters for each floor that would probably alleviate alot of the tension there.I know this is a lengthy post - commercial is something that has always caught my eye and I've had great interest in.  

When were roofs installed, do you have AC/heating systems, what about siding, plumbing and electrical?

Very straight forward and easy. cost me $2500 eveything installed.

You can buy them from a wholesaler online but I have been told that if you do that and it is installed they may not honor the warranty because it wasn't done by one of their installers.

Most walk-ins have swinging or sliding doors which can be an extra expense to install and maintain if broken.