The answer to the cost of shut-off valve repair in Chicago is that it can vary widely depending on several factors. Typically, the cost for a professional plumber to repair a shut-off valve can range from $150 to $400 or more. The specific price will depend on the complexity of the repair, the type of valve, the location of the valve, and the labor rates in your local area.
Some key factors that influence the cost include whether the valve is easily accessible, if it needs to be replaced entirely, and the hourly rate of the plumber. Shut-off valves located in hard-to-reach areas or that require more extensive work will be at the higher end of the price range. It's important to get quotes from multiple local plumbers to compare costs and find the best value for your specific needs.