Detailing a car in California can be an expensive proposition, depending on the type of work required. The average cost to detail a car in California ranges from $150 - $500 depending on the size and condition of the vehicle and what services you'd like performed. For example, if you only need a basic interior cleaning and vacuuming service, then your cost will be at the lower end of that range. If you are looking for more extensive services such as paint corrections or waxing, then expect to pay closer to $500 or more. Keep in mind that some detailing services may require additional fees such as polishing compounds or special sealants which can also add to your final bill. Additionally, many detailers charge extra for travel time when they come to your home/location so it's important to check with them before booking any appointment. All said and done though, getting your car detailed is one sure-fire way of keeping it looking great while protecting its value over time!