Usually by then, it's too late.
I always ask myself these 4 questions:
1. Have I made a lot of equity in my property?
2. Are things starting to plateau?
3. How long should I hold on this property? So far, holding has worked out well if you bought within the last 7 years. At this point we all have to decide if it makes any more sense to hold. The gains we've seen in the past 7 years are slowing. It may be another 7 years before we see increases like those again.
4. At the same time, historically low interest rates are going up. Do I wait to buy because prices might come down, and, risk a higher interest rate?
It's harder to get clear cut answers these days. But if you've been thinking of selling for years, now is probably one of the best times because we've surpassed heights again.
If you're thinking of buying, you need to really consider the interest rate lock. Sure the rates might come down and you can refinance, but what if they continue to go up?