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About Us

Established in the early 1950s, Alterio Construction LLC continues to provide quality work for both residential and commercial customers.  Operating in the greater Fairfield County area, we are a contracting business that provides a full-range of remodeling services backed by insured, licensed professionals including but not limited to kitchen and bathroom remodeling, window replacement, sunrooms and decks, home additions and new construction. For over thirty years the principle member of the company Leonard Alterio III, has met and exceeded the requirements of our clients by providing a strong customer-focused approach. Our company guarantees quality craftsmanship at a fair price with special attention to detail.


Alterio Construction Services

"A One Stop Shop"


Full Home and Commercial Renovation

Alterio Construction LLC manages all home and commercial remodels, contracts out subcontractors to make sure all your needs are met. A one stop shop.


Alterio Construction LLC is committed to getting the job done, especially when it comes to this service. You can count on us to be professional, timely, efficient and make sure you’re satisfied every step of the way.


Custom Trim

We have the experience and skills necessary to tackle just about every type of job that comes our way. With Alterio Construction LLC, clients know exactly what to expect - professionalism, efficiency and exceptional results.


Since its founding, Alterio Construction LLC has been one of the most trusted names in the industry. Hire us for this service and learn how we cater to the needs of each client, ensuring the results you need and deserve.


Kitchen Renovations

When looking to create your dream home, kitchen remodeling is the best way to enhance your home appearance, value and function. Alterio Construction offers a wide range of kitchen remodeling services with expert advice to whats right for your home.

Bathroom Remodel

We provide complete bathroom design and remodeling services including bathroom vanities, lighting fixtures, tub and shower installations, and all your bathroom needs.

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Car collector showroom reflector.jpeg

Introducing Concrete Flooring Design

Elite Crete Systems

Certified with Elite Crete Systems, Alterio Construction is now offering a unique concrete flooring service which offers a full array of decorative flooring finishes. Reaching commercial, industrial and residential customers, this new flooring idea is growing rapidly. From durable warehouse floor coatings to unique retail designs, this specialty flooring can meet your project requirements.


"I now have a beautiful modern condo and I have Leonard Alterio to thank. He was the general contractor for re-designing my condominium from top to bottom. Leonard took ideas I talked about and made them into better realities. Sometimes I questioned his ideas but he would say "trust me" and I always could. Leonard was willing to listen, suggest ideas, and do what needed to be done for a comfortable result. A true gentleman who I can highly recommend."

Marcia Levy, Westport CT


"Lenny is a true artist and craftsman. He installed a coffered ceiling in our great room and ship lap throughout our home.  The coffered ceiling really is the show piece of our home. The detail is impeccable and Lenny created it to absolute perfection. The ship lap is beyond amazing anyone who sees it says I want this in my house. I couldn’t be happier with the craftsmanship it added so much value to our home and it honestly makes me happy just looking at it!"

Jennifer Del Vecchio

Get in Touch

483 Monroe Turnpike Suite 344 Monroe CT 06468

(203) 727-4738

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