Edd-
Sound like you and I both come out of hiding at the same time!
To all-
I learned a very valuable lesson today in my research of this assignment. In sum, my original understanding of what the problem to be solved was incorrect

. Although there were some language challenges between me and my client's point of contact, the fault of the misunderstanding is 100% mine.
The short story is that this is not a "vacant land" hypothetical. It is a condo appraisal, period. The condo is the shell (walls and roof). The way my client's contact explained it to me (which I repeated back to him in a written confirmation) was that the HOA was splitting this area away from the existing condominium project and selling it to my client as its own individual site/parcel.
What actually exists is that this lower level is all one existing condo unit (shell, dirt on the ground) and the area that my client is improving is being partitioned as its own condo unit (but still remains a condo in the larger project); it is this new, partitioned unit that my client is purchasing. I have the preliminary legal description identifying this new unit and am awaiting confirmation via the new recorded condo map.
I discovered this when I was reviewing some of the correspondence between the HOA and my client's attorney and when I interviewed the larger building's leasing agent this morning.
On the one hand I sure feel stupid

. On the other, I'm happy I found my mistake now during the research stage rather than after report delivery. I learned two very important lessons:
1. When an assignment appears "oddball" (like this one did to me), be very certain about confirming the components of the assignment: the oddball aspects may be due to a mis-identification of the problem.
2. Regardless how simple or complex the assignment appears to be, be very certain about confirming the components of the assignments so that the problem to be solved is correctly identified.
