You can work on both at the same time! While you start searching the internet looking for your next home, you need to get yours on the market. ( If you find the right home, and cannot purchase without selling your home, then a seller will want to know that you are actively marketing yours for sale.) If you have a lot of equity in your present home, you might check into a bridge loan and go ahead and buy a new one and then sell your home once you are out, but that is not always an option. And only if you can afford 2 house notes! So best to search internet and do some drive bys and once your house is on market; work with your agent and start visiting houses; so that when your house is under contract you can make an offer on a new one! Since our area still is in a buyer’s market, a seller may accept a contingency contract with a first right of refusal. That would give you a place to move to once your house is under contract.