The Unites States does not have a regulatory agency for carpenters. In other countries, an apprenticeship of at least four years is required in order for a carpenter to be certified. This places the burden of confirming the carpenter's experience and expertise on the customer, through reference checks and inspection of past projects.

Although U.S. laws do not require it, many carpenters acquire a four-year apprenticeship certification through organizations such as, The Associated General Contractors, The United Brotherhood of Carpenters and Joiners of America and the Associate Builders and Carpenters.

When looking for qualified carpenters, general contractors are a good source for finding qualified professionals. You can also ask local hardware and building supply stores if they have a list of carpenters that they recommend.