Do you buy assets based off of the financial data on that other asset.

Several methods come to mind for the ADU.   1) a regular or periodically adjusted flat fee (based on an estimated usage); 2) factored into the rent (essentially the same as a flat fee); 3) percentage proportionally based on sqft. 

The rating was based on the Executive Supervisor payroll and the cost of the Subcontracted work. 

Here's what auction.com said about the transaction details: "Buyer will not be charged a Buyer's Premium for this property.If you are the Winning Bidder, an Earnest Money Deposit of 5% of the total purchase price or $2,500 (whichever is greater) is required.Buyer may receive a Special Warranty Deed or equivalent if Buyer is able to purchase title insurance without delaying the closing (title fees typically cost between $500 and $1500 and are based on the purchase price of the property).

His annual compliance report is clean he says.Owner had his Coam taken away and is the single owner running the show, an hour away from his home base. 

I would love to get a better understanding of what duplexes in this area actually sell for, and not just running my numbers based off of initial listing prices from owners.

Based on these rough numbers and assuming that a market rental appraisal would back up your stated income, you're looking at a DTI of ~44% at today's generic rates.

Sidenote my Outer Banks rental is crushing which has caused me to shift my focus a bit from cabin to beach for the next investment, based on current market prices.

I got started by fixing and flipping properties here in Pinellas County and now I own a Wholesaling company based in Tampa but we do business all over the State. 

It is a quick synopsis of what to look for based off of my experience both managing properties and talking to other investors which have hired management firms.