I'm not understanding some of these replies. what does he have to lose if he makes a conditional offer? nothing. only the other house if he doesn't sell his current one.
he's not putting himself in a bad position at all, he's not expecting to sell his house in a week. where is the other downside to this?
why would anyone want to carry 2 mortgages if they don't have to? that doesn't make sense to me at all...