About Us

In 1965, Mario Castelli, a young man of 15 years, needed some spending money. He loved going to the movies (cowboy westerns were his favorites), and he liked to read comic books, which he and his friends bought and passed around to each other to save money. Money was a hard commodity to come by in post World War II Italy. Mario knew that his parents were hard-pressed to provide their children with the necessities of life; asking them for money to buy frivolities was out of the question. So, when he heard that a carpentry shop owner in his neighborhood, Mr. Ennio Della Rosa, was looking to hire someone to make pallets for an American paper company located in nearby Cassino, he jumped at the chance. Mr. Della Rosa hired him and soon realized that Mario was a quick learner, adept, efficient and hard working. He offered him an apprenticeship in his shop. With his parents’ approval, Mario accepted.

In those days, there were no home improvement stores where one could purchase the wood products needed to finish trim a house. The employees at Mr. Della Rosa’s shop had to first make the moldings, doors, windows, etc, from raw lumber. Mario was taught how to work the machines and the proper way of making and assembling the various wood products.

After this, he was ready for the second phase of his apprenticeship – learning the skills to apply the wood products on a job. He quickly mastered the proper techniques to measure, saw, miter, plane, nail, etc. With practice his work became clean, polished and precise.

Mario worked for Mr. Della Rosa until 1970, when he decided to follow his brothers who had immigrated to Canada. Because of his carpentry background he was able to secure a position with Nu-Style Carpentry, a house building company in Toronto. Mario likes to recount how his first duty there was to install shoe molding to the many wood-floored rooms of the large, newly constructed houses. His boss would drop him off at a house early in the morning and he would work all day in his stocking feet so he wouldn’t scratch the wood floors.

The work experience in Canada allowed Mario to learn how houses were built in North America. These were wood-framed houses, whereas in Italy, the walls were constructed of thick stone and mortar. He continued working for Nu-Style for three and a half years, having advanced to foreman of his own crew by the time he’d left the company.

In 1973, newly married, Mario moved to the Detroit area where his wife’s family resided. He took on different construction jobs to support his young family, excelling in all of them. This went on for 13 years until the company he worked for went out of business. Mario saw this as an opportunity to go back to what he loved to do – carpentry work. He and his wife, Josephine, decided to form their own company, calling it Mario Construction Company, Inc.

Mario hired young workers out of high school and taught them carpentry skills as he had been taught many years before. Some of those employees are still with the company today, maintaining the same high standards of excellence in their work as Mario.