Bidding on instinct is the fastest way to lose money at an auction. The right number comes from working backward from what the property would be worth once it's ready: the ARV (after repair value).
From that ARV you subtract everything it costs to get there: estimated repairs, closing and acquisition costs, taxes and insurance while you hold it, and the profit margin you want to keep. What's left is your maximum bid — bidding a dollar above it starts eating your profit.
You also need to subtract inherited debts (surviving liens, HOA dues, special assessments) because they come out of your pocket even if you win cheap. BIDROI rolls all of this into the Strike Price and the BIDROI Score, so you arrive at the auction with a clear ceiling instead of a guess.
Real numbers help calibrate that ceiling. Across the resolved Miami-Dade auctions BIDROI tracks, independent investors win about 4 of every 10 auctions, and when they win, the median winning bid lands about 33 percent above the final judgment (the debt set by the court). If competing near that range eats your profit, the smart move is to pass and wait for the next one.
BIDROI computes the Strike Price, the BIDROI Score, and the legal risk for every Miami-Dade property.
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