is the pictiometry like 3 D... in the timber busness we used a sort of stereo scope thingee and that helped up tell Christmas trees from mature timber 

Sale prices of identical homes are the same.

The instrument will only have the original loan amount and maturity date in most cases.

Those three, let's say identical buildings could have vastly different NOI's. 

What's key is that the data is close but not identical to the recorder's general index.

Here's the current situation:The fourplex I bought upon completion in December 2016 for $550k is now already worth $645k (actual sales comp from identical building) and I haven't put a dime into it.

I was thinking of possibly taking out ~$50k which would make my monthly payments almost identical to what they are now. 

The floorplan is identical minus a 4th bedroom where I have a loft...

. - to prospective borrowers (please disclose if there is a better way of structuring this).1- We have been told that 10.75% APR and 2.5 points is a competitive rate - in the current market, would it be feasible to exceed those returns at 60% LTV/6-18 months maturity?

You must first have knowledge, a plan, a business plan, a identity and somewhere along the way either at the beginning or sometime later create the entity that fits your individual need and end result.