Welcome to S.L. Mario Construction
… a premier general contractor in Boston and western suburbs for over 20 years, using cutting edge materials and systems in residential construction since 1993.
S.L. Mario Construction is a Registered Home Improvement Contractor licensed by the State. Home Improvement Contractor, Registration #123337. All Project managers have a Massachusetts Construction Supervisors License. S.L. Mario Construction is also an EPA Lead Safe Certified Renovator.