Here is the rule we use at our bank. The main thing is to be consistant in your reporting.
If you are lending to a business to buy a piece of equipment that will be used permanently at a location other than the main business facility, you may use the address of the location of the collateral if you have it. Otherwise, use the business address. However, if the machinery is not in a permanent place, always use the address of the business.
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Life is not the way it's supposed to be. It's the way it is. The way you cope with it is what makes the difference.