Costs to repair a leaking pipe vary depending on how large the leak is, what type of pipe it is, and how complex the repair is. Simple repairs are usually only $50 while more complicated repairs can cost upwards of $1,000. It is crucial to call a professional plumber if you suspect that your home has a leak.  There are two types of leaks: water and sewer. The cost to repair it will depend on what type of pipe is leaking. Because they require less extensive repairs, water leaks are usually less costly than sewer leaks. Sewer leaks are more complicated because they involve more intricate pipe systems. Costs to repair a pipe that is leaking will depend on its severity.