The answer to 'average cost of irrigation system' is that the typical range for a professional-installed residential irrigation system can vary widely, from around $2,000 to $10,000 or more. The final cost depends on factors like the size of your yard, the complexity of the system, the type of sprinklers and controllers used, and whether you need to install new water lines.
For most average-sized homes, a basic sprinkler system with an automatic controller will typically cost between $3,000 to $5,000 when installed by a professional landscaper or irrigation specialist. More complex systems with features like smart controllers, drip irrigation, and specialty sprinklers can push the cost higher. DIY installation can save money, but requires more time and effort to plan and install the system properly.