Grading is necessary before putting in a new driveway or patio because it provides a smooth, even surface to support the new installation adequately. Without preliminary grading work, your driveway or patio will likely end up suffering damage in the long run. Uneven ground can lead to water pooling around the concrete, causing it to gradually weaken and deteriorate prematurely. It can also concrete to shift, crack, or sink over time. Collectively, these issues result in undue damage, the shortened lifespan of your new installation, and an overall poor appearance of your home. That's why grading is an unavoidable necessity for most exterior additions on your property.