Definition
Underwriting is the lender's formal, detailed review of a buyer's finances and the property itself before the loan funds are actually released. The underwriter verifies income, assets, credit history, and the appraisal, and can add new conditions right up until closing day. It's the stage of a financed sale where deals most often get delayed or fall apart entirely, sometimes over something as small as an unexplained bank deposit. For a seller, understanding underwriting explains why financed sales can drag on and occasionally collapse close to the finish line.
Example
Two days before closing, the underwriter on Gabriela's buyer's loan requested a letter explaining a recent five-thousand-dollar deposit into the buyer's bank account that didn't match his regular pay stubs. The paperwork took a week to sort out, pushing the closing date back and leaving Gabriela anxious about her own moving plans the whole time. The sale eventually closed, but not on the schedule she'd originally planned around, and she had already begun coordinating movers and canceling utilities for the original date. Her agent explained that this kind of last-minute underwriting request is common and rarely means the loan will actually be denied. Gabriela later said she wished she'd understood how easily underwriting could stall a deal so close to the finish line before agreeing to a tight closing date. On her next sale, she built in extra cushion and asked her buyer's lender directly about the file's status each week.