Installing a sprinkler system can greatly improve the look and maintenance of your lawn or garden. The cost of sprinkler systems varies depending on the complexity, coverage area, and labor needed to install. Generally speaking, sprinkler systems installed by professional sprinkler system installation companies start at around $3000 for average-sized yards. However, if you are looking for elaborate sprinkler systems with additional features such as timers and rain sensors it will cost more. Some sprinkler systems with all the bells and whistles can even range up to $7000 or more. When shopping for sprinklers, it is important to always remember that you get what you pay for.