Information and resources on registering as a home improvement contractor. Includes forms, guidelines and a lot of information.On November 6, 2014, a new Massachusetts law governing retainage payments in private construction contracts will go into effect. Effective November 6, 2014, there is a new statute governing retainage on private construction projects. Section 29F: Payment of retainage in private construction projects. This is an unofficial version of Commonwealth regulations and is posted here for the convenience of the public. There is no specific form that needs to be filled out to document this analysis. Control Law or any land within the Town or proceed with the improvement or sale of lots in a subdivision, or the construction of ways, or the installation of. SECTION 10: CONSTRUCTION CONTROL (Please fill out Appendix 2). Ricardo was learning that this scenario was not out of the ordinary in residential construction in Massachusetts.