While in Calabasas, a car would be the most convenient mode of transportation due to the city's spread-out areas. A rental car could cost about $35-45 a day, and you can also use ridesharing services like Uber or Lyft.
If you have more time, add a day to visit the Santa Monica Pier and Third Street Promenade. Also, take note that weekends can be busy, so try visiting sites early. Conversely, if you have less time, you can skip any of the activities above or group the stops by the city area.
The city has three airports near Calabasas. Los Angeles International Airport (LAX) is the most popular airport, situated 30 miles away in Westchester, and Burbank Airport (BUR) is about 25 miles away in Burbank, while Van Nuys Airport (VNY) is about 10 miles away, servicing charters and private jets.