Most apartment sales are won or lost before the building ever hits the market. The owners who net the most aren't always the ones with the nicest property — they're the ones who show up prepared. Clean numbers, clean paperwork, and no surprises give buyers confidence, and confident buyers pay more, close faster, and re-trade less. If you're thinking about selling in the next six to eighteen months, here's how to put your building in the strongest possible position. 1. Start w