The cost to repair cast iron drain pipes depends on the issue, the chosen repair option, the labor involved and any warranty costs, if desired. Cast iron drain repairs require a consult with at least one professional plumbing company, and most provide free consultation, inspection and repair options to potential customers. Depending on the issue, basic repair options for cast iron pipes may be found online from websites such as Do It Yourself.
Cast iron pipes are common in older homes that were built before PVC piping was available. They generally have a lifespan of 30 to 50 years. Over time, pipes eventually need to be repaired or replaced due to rust and corrosion.