There is no right or wrong answer to this question. Ultimately, you will need to decide what makes the most financial sense for your situation. If you sell your house first, you may have to move into a rental property temporarily. This could end up costing more in the long run if rent prices are high in your area. However, selling your house before buying a new one gives you the opportunity to use any equity from your home as a down payment on the new property. This can help reduce the amount of money you need to finance and save interest costs over time.