While finding a home with a tennis court is not common in the greater Dallas Fort Worth area, they do exist. A home with a tennis court typically sits on a very large lot as the court measures 78 feet by 36 feet in size but requires 120 feet by 60 feet to give space for over-runs. This drives up the price of the house. While you may find homes with tennis courts in the $300k range, most of them are substantially higher.
According to WikiPedia, “Tennis is played on a variety of surfaces and each surface has its own characteristics which affect the playing style of the game. There are four main types of courts depending on the materials used for the court surface: clay courts, hard courts, grass courts and carpet courts. A North/South orientation is generally desirable for outdoor courts to avoid background glare at dawn or dusk. Orientation should also take into consideration other structures and features on the site, neighboring property, vehicle and pedestrian traffic, and prevailing winds.”