Hiring an experienced plumber is key to a successful plumbing project and protecting your home from potential damages. Improper plumbing maintenance and repairs can lead to problems with sewage, flooding, your home’s foundation, and more. The work of a licensed plumber helps guarantee not only experience and expertise but also quality work, insurance, and adherence to local rules and regulations. Note that working with unlicensed plumbers doesn't automatically negate experience—as six states don’t require plumbers to have licenses— but it’s a safeguard to consider.