In July 2014, Massachusetts passed a law (Massachusetts Sober Homes Law) mandating the monitoring and voluntary certification of Massachusetts sober homes. The law states that although a sober home is not required to be certified to operate, a state agency or vendor with a statewide contract to provide treatment services, or a state agency or officer setting conditions for release, parole or discharge, may not refer a person to a residence that is not certified. Effective September 1, 2016, state agencies and their vendors shall only be able to refer clients to certified alcohol and drug free (ADF) housing. Any home not certified will not be able to accept clients from state agencies until certified. A contract was awarded to the Massachusetts Alliance for Sober Housing (MASH) to be the certifying body, and the training and technical assistance vendor.