The seller changed her mind. That's what she told me, three hours before closing. Not about selling, about the address. She'd been telling buyers the house was 412 Maple for six weeks. It's 421. The 1 fell off the mailbox like eight years ago and she just never fixed it, and at some point she started believing it was 412. The buyers drove past 412 Maple every day for a month. Loved the neighborhood. Loved that it was across from the little park. 421 is not across from the park. 421 is next to a guy who repairs lawn mowers in his driveway. Title company catches it during final walkthrough because someone actually looked at the deed. Buyers are standing in the kitchen they've already mentally renovated and the wife just goes "wait, what?" I spent forty minutes on the phone with their lender explaining that the house didn't move, the numbers were just wrong on every single document I submitted. Every one. The MLS listing, the flyers, the showing confirmation emails. All said 412. The husband kept asking if this affected the property value. I said no. He asked again. I said no again. He asked if the lawn mower neighbor would impact resale. That's not a question I can answer, sir. They closed. It took an extra nine days and cost the seller $1,400 in extension fees. She asked me if she should put the 1 back on the mailbox now. I said yes. She said she'd think about it.