Most likely inappropriate, but NUMEROUS.

Don't show usage on your credit and you don't even need an LLC to get the business one  

However, unless you can establish a sizable "income" (yeah, you don't have to prove it) and sizable usage/expenses on those business credit cards, your limits are going to be very low. 

You're going to want to follow the following general rule of thumb:- 0.5 mile radius- same zip code- Sold in last 3 months- Same unit count- Same bed/bath count- Same square footage(this is not fully exhaustive but they're the big ticket items)If the appraiser selects comps that are closer matches to the above than the comps you want to use, you're going to have a tough chance arguing for the usage of your comps over theirs. 

Homeowners' associations enforce rules regarding property usage. 

In my area the water company will forgive excess usage if it can verify there was a temporary water leak causing it. 

In the future I will probably add the card in addition to keeping the coin to cover all customer needs and provide better tracking of machine usage.

Unless, like Bill suggested, there is some kind of local restriction on the property usage that you have been unknowingly violating.

But whatever @Carlos did, created a more valuable usage of my time as a contributor.  

Any land held for potential appreciation, for farm usage, for its raw materials,  or for potential future development can qualify.