Trusted my agent's ARV on a flip and sold $33k under it
Bought a 1958 three bed, one and a half bath, 1,340 square feet, at $158k. Agent's ARV was $265k, backed by three comps she sent in a one page PDF. Sold at $232k after 152 days on market with two price cuts.
How the number was wrong. Comp one was 1,610 square feet with a two car garage and a full second bath, sold 11 months prior. Comp two was four blocks away but across a boundary that moves the elementary school, which in this market is worth real money and I did not know that when I bought. Comp three was the closest match and sold at $241k, and that was the one she described as "conservative." She wasn't inventing anything. She adjusted for nothing and I never asked her to show the adjustments.
The rest of the damage. Reno budgeted at $52k, came in at $71k. $9k of that was a sewer lateral I should have scoped before closing. $6k was upgrading the kitchen mid-project because I was still anchored to $265k and thought I needed a finish level to justify it, which is the most expensive mistake in the whole file. Holding was about $9,100 over five months at 11.5% on the money. Selling costs about $13,900 all in.
All in around $252k against $232k. Call it a $26k loss counting the carry I paid on my own capital.
What I'd do differently. I'd ask for the comp grid rather than the PDF, with square footage, bath count, garage, and the dollar adjustment on each line. Any agent who works with flippers has that and hands it over without being asked. I'd drive the comps myself, all of them, before the offer instead of after the framing was up. And I'd write my exit number down and refuse to spend against a higher one, because the $6k kitchen decision came from a number that was already wrong by then.