Three Sons takes your business seriously. We want you to be our customer for years to come and we want you to be able to refer us to your family and friends. We wouldn’t expect you to put your faith in a company that doesn’t carry the proper insurance and certifications.

Three Sons strives to perform at the highest levels in our industry because we know it is the only way we can do the job right while earning your trust.

We are fully licensed & insured:

  • Massachusetts Home Improvement Contractor’s License
  • Massachusetts Construction Supervisor’s License
  • Liability & Workers Compensation Insurance
  • Massachusetts Lead Safe Contractor

MA Reg #169210
CS Lic #080626


5-star-contractor Three Sons has earned CertainTeed’s 5 Star Contractor, which included being certified as Vinyl Siding Master Craftsmen, Restoration Millwork Master Craftsmen and a Vinyl Siding Institute Certified Installer.

certified-vinyl-installer The Vinyl Siding Institute (VSI) Certified Installer Program requires a combination of coursework, testing and experience. It is overseen by a third-party administrator, Architectural Testing, Inc., to ensure quality control of the certification process. The VSI is the trade association for manufacturers of vinyl and other polymeric siding and suppliers to the industry, and suggests that if you are re-siding your home or building a new one, the quality of the installation should be as good as the vinyl siding you choose.
Three Sons is a fully licensed Lead Contracting Firm. Our workers are certified supervisors and workers in the lead abatement industry, with techniques for carrying out lead-based paint, soil and dust lead abatement. Our lead certifications are requirements of the Massachusetts Department of Labor Standards and the Childhood Lead Poisoning Prevention Program.