Thanks @Bill S. I didn't know I could ask the county about issues related to previous offers - worth checking into.
The property went under contract last Sunday -- I had only learned of it Friday afternoon. However, I won't assume that contract will hold, so, I will use this time to keep digging.
History of the property in the past year: 1.1 acres with 2200 sqft commercial building listed Dec 2015, price drop 10/31/16 (from $750K to $400K), immediate offer, then relisted 11/11/16. New contract 11/20.
I was under the impression that with 5 lots you are creating a subdivision but not with 4 or less in this county. I'm also aware that tap fees are crazy high and after speaking to P&Z found that I have to subdivide first before beginning individual projects (one building per lot rule) -- most likely requiring 3 additional taps. I have not confirmed those fees yet.
Property is adjacent to local, collector and arterial roads and is listed TIFA:1 -- Fees will apply.
At the price the property is currently being offered, I'm not sure the numbers work out. Estimating $150/sqft new construction (ballpark), adding $100k in land for the lot for a 2200 sq ft duplex yields a price tag of $430,000. Yes, there are a number of duplexes listed in the $400K - $500K range in the Denver area but those are not cash-flow numbers, I don't believe. Granted, with new construction, if this is turned into a rental, cash flow analysis can be modified to yield a more favorable picture. Not sure what resale could bring, yet.
Still more to learn!