The cost to install a utility sink in your garage will have 3 components: Utility Sink Cost: The cost can range from $100-$700 depending on the size and the material of the utility sink. Plumbing Material Cost: This will depend on the length of the water pipe, from your home to the garage and the distance from the utility sink to the sewage drain. PEX water pipes cost between $0.50-$2.00 per foot. PP drains cost between $1-$10 per foot.  Labor Cost: An experienced plumber would charge you $200-$500 to install the utility sink in the garage. This does not include putting in the additional water pipe and drains. The costs are indicative only and can vary depending on your location and specific needs.