Sofas cost a lot of money, they take up a lot of space, and they’re where you and your family will likely spend a lot of time. So make sure you know the do’s and don’ts before your purchase. DO consider how you’ll use the sofa – and be honest! DON’T forget to ask about the construction. DO buy the best quality you can afford. DON’T forget to measure. Make sure to take note of the width, depth, height, seat height and arm height. DO test it out before buying. While you’re in the store sit down, lie down, put your feet up.