How do I check references for a plumber?

Checking references for a plumber is one of the most useful steps in hiring, because it tells you how the person actually works on real jobs, not just how they describe themselves in an interview. A careful reference check takes a little time, but it can prevent a costly hiring mistake and give you confidence in your choice.

Start by asking the candidate for references from recent work. Good references include past employers, supervisors, or clients who have seen the plumber's work firsthand. Ask for at least two or three contacts, and make sure they are recent enough to reflect the plumber's current skills. Be wary if a candidate can only offer personal friends or contacts from many years ago, since those may not tell you much about how the person works today.

Before you call, prepare a short list of questions. Ask what kind of work the plumber did, how long they worked together, and whether the work was completed on time and to a good standard. Ask about reliability, such as whether the plumber showed up when promised, communicated clearly when plans changed, and left job sites clean. Ask how the plumber handled problems, such as an unexpected issue behind a wall or a customer who was unhappy with an early result. These questions reveal habits that a resume cannot show. Ask whether the plumber kept to the agreed price and explained any extra work before doing it, since clear communication about cost builds trust with customers.

Also ask about technical skill and safety. Find out whether the plumber followed building codes, handled permits correctly, and worked safely around water, gas, and electrical systems. Ask whether the reference would hire the plumber again or recommend them to others, and listen carefully to the tone of the answer. A hesitant or vague response can be as informative as a direct one. If a reference raises a concern, ask for a specific example so you can judge how serious it is. A reference who speaks warmly and gives concrete examples is a stronger sign than a brief note that offers little detail.

In addition to references, verify the plumber's license and insurance independently. Check with your state licensing board that the license is current and in good standing, and ask to see proof of insurance. A license check confirms the legal right to do the work, while references confirm the quality of it. Keep notes on every reference call, including who you spoke with and what they said, so you can compare candidates fairly. A plumber with strong references, a valid license, and a record of reliable work is a safer hire than one with a polished interview alone.

Next step: Post a free ad on Realtor to find plumbers in your area, then check references before you make your hire.