@Mark Statner - You want to use the tax assessors website for determining a houses square footage and taxable assessment.

Now that they pay it, it's down to $75/month.However, our 6-plex (10 adults 3 kids) runs about $81/month for water/sewer, but our water rates are obviously much lower.

Interest rates are helping to sell because of the lower payments but if they start going up less people will be able to qualify. 

It's actually not that desirable and the discount isn't much lower than market rate ( or rather what'd you could get it for on MLS).

The other advantage to an MLS listing is that you'll experience much lower vacancy (provided you've priced correctly) because your property will be recommended. 

You can purchase less than what you sell but you will pay tax on the difference just as if you pulled profit out of the deal.I know, you put the money in the first time and it's not taxable. 

Rents there are lower; but in these areas my daughter and her friends choose to rent a large apartment and all live there, each has a room, and/or a roomie.

If the rates go down, you can always refi and get a new loan at a lower interest rate. 

This works better at a lower price point, since the rent curve is more flat than the purchase price curve.  

Does that mean that when I look at the $90,000 house and the numbers are close and the deal would make sense at $78,000 (that is, the numbers would all fit and give me results within the rules of thumb; 1-2% rule for instance) would one then offer what would work even if it seems quite a bit lower than asking?