Any court surface may be used indoors. Hard courts[8] are most common indoors, as they are made with the most versatile materials and surface finishes. Clay courts are installed indoors with underground watering systems, and used mostly for Davis Cup matches. The conclusion of the Wimbledon Championships, in 2012, was played on the lawn of Centre Court under the closed roof and artificial lights. The Halle Open has also seen a number of matches played on its grass court in the Gerry Weber Stadion with the roof closed. Carpet surfaces have been used both on the ATP World Tour and World Championship Tennis circuit, though no events currently use them. Historically, other surfaces have been used indoors such as hardwood at the defunct World Covered Court Championships and London Indoor Professional Championships. Currently, the ATP World Tour Finals event is the most important indoor tennis tournament.
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You definitely want to base your tennis racquet buying decision on your skill level too. Here are some examples. You probably don’t need to buy a $200 tennis racquet if you just want to go out and volley some balls with a friend to see if you like the sport. Also, if you are an advanced player who likes a little extra power and a racquet that helps you put you more spin on the ball as you return it, then a $70 tennis racquet is probably not going to fulfill that need.
Before hiring a local contractor to build your play court, ask plenty of questions and do your research. Tennis court construction is a highly specialized field, so it's important to find a contractor with extensive experience. Kolkmann recommends using someone who is an active member of ASBA, with at least 15% to 20% of annual business devoted to designing and constructing sport surfaces. (ASBA has a searchable database of certified builder members.)
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