I have even gone as far as to formulate and assign numeric values to such things as one side of vinyl on a house vs. brick in more than one zip code in my area or the number value of Laminate vs.

I live in West Seattle and have found several folks in my zip code who rent their house by the week as vacation rentals.

You'll be a graduate with honors before long.

Our code only addresses occupancy per unit, but does not define unit.

I once found a great web page that listed all the distressed properties that had been sold on a month to month bases or are least having been sold in the last year separated by zip code.

Is the owner in violation of any city ordinances or building codes?

Have your realtor check to see what Condo's sold for in the last year; in my area I can go onto the internet and ask the question of what houses sold for in a particular zip code and get the answer.

But it requires that you know how to understand/write code a bit.

While everyone is pointing out various facts regarding various state tax codes. 

It gets betterThe house has daily fines accruing for code violations: Retaining wall needs repair, and needs to be scraped and painted to make the fines go away.