While the answer to this basic question is as individual as you are, here are some things to consider. 
Generally speaking, under most market conditions, real estate professionals advise listing your present home and shopping for your new home simultaneously. Nonetheless, you should talk to your Sales Associate about your personal situation, so you can consider how fast you need to sell and how long you should expect it to take in current market conditions.

If you have very specific criteria – like location, size, views, age, etc. which could lead to a time-consuming home search – you should consider finding and buying a home first before you sell your existing home. If necessary, your offer to buy a home can be contingent on selling yours. On the other hand, if you sell first, you can make your sale dependent on finding a home to buy.

Seasonality can play a role in deciding when to sell – with spring and fall the most popular seasons to put a home on the market. As a Weichert Sales Associate, I can help you consider the effect of other factors like interest rates and consumer confidence in the economy.