KLM Construction Inc.

KLM Construction Inc. KLM Construction Inc. was founded and incorporated in 2002 by Joseph Penta of Waltham, Massachusetts.

KLM Construction is a family owned and operated construction company specializing in home renovations, additions, new construction, siding, and more.

Walls up on the Cynthia Road project.
06/12/2026

Walls up on the Cynthia Road project.

Our Cynthia Road project, adding a family room and primary suite, started back in September 2025. 12 foot foundations we...
06/09/2026

Our Cynthia Road project, adding a family room and primary suite, started back in September 2025. 12 foot foundations were dug and connected by an underground tunnel to provide this family with maximum ceiling height for a home gym and the storage they so desperately needed. Once the foundations were set, the tunnel was enclosed with a steel roof and concrete, and then buried to create a courtyard between the two additions. Follow along to see the progress!

KLM Construction Inc. was founded and incorporated in 2002 by Joseph Penta of Waltham, Massachusetts. KLM Construction ...
06/06/2026

KLM Construction Inc. was founded and incorporated in 2002 by Joseph Penta of Waltham, Massachusetts. KLM Construction is a family owned and operated construction company specializing in home renovations, additions, new construction, siding, and more. Known as “Mr. Fix It” to his family and friends, Joseph had a knack for being handy from a young age. So, after working in the construction industry for over 20 years, he and his wife decided to incorporate their own construction company. To many, K, L, and M are just three sequential letters in the English alphabet. But to Joseph they are more than just three letters, they are his reason to put his work boots on every day. K, L, and M are the initials of his wife, Karen, daughter, Lauren, and son, Matthew.

Over the last 20 years, Joseph has created a reputation across the greater Boston area for excellence and care, and he has added to his family with the addition of his son in law, Nick, and his grandsons Leo and Jack. The care and love for his family translates into the work that Joseph does every day. When you work with KLM Construction, you will not just be working with a construction company, but rather a family that cares about yours every step of the way.

10/07/2022

Welcome to our page!

KLM Construction Inc. was founded and incorporated in 2002 by Joseph Penta of Waltham, Massachusetts. KLM Construction is a family owned and operated construction company specializing in home renovations, additions, new construction, siding, and more. Known as “Mr. Fix It” to his family and friends, Joseph had a knack for being handy from a young age. So, after working in the construction industry for over 20 years, he and his wife decided to incorporate their own construction company. To many, K, L, and M are just three sequential letters in the English alphabet. But to Joseph they are more than just three letters, they are his reason to put his work boots on every day. K, L, and M are the initials of his wife, Karen, daughter, Lauren, and son, Matthew.

Over the last 20 years, Joseph has created a reputation across the greater Boston area for excellence and care, and he has added to his family with the addition of his son in law, Nick, future daughter in law, Vanessa, and newest member of the family, his grandson, Leo. The care and love for his family translates into the work that Joseph does every day. When you work with KLM Construction, you will not just be working with a construction company, but rather a family that cares about yours every step of the way.

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Waltham, MA
02452

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