For over 40 years Jack Finn & Company Building Contractors has continued to earn its reputation in Montclair and the surrounding area as the go-to team of builders for new homes, residential renovations and custom alterations.


Jack Finn and Company Building Contractors projects include small bathrooms and kitchens, large scale interior alterations, small and large additions, new custom-built homes and adaptive re-use projects.


At Jack Finn & Company Building Contractors we pride ourselves on our ability to tailor each project to the needs and expectations of our clients, what ever their needs as the scope of the project takes shape.

Building Philosophy

At Jack Finn & Company we pride ourselves on our ability to tailor each project to the needs and expectations of our clients.

Jack’s team of experienced project managers, estimators, carpenters and tradesmen brings unmatched expertise to the construction site for a timely and cost-effective completion of every job, with consistently elegant results.

Get to Know Us

NY Times Business Wednesday March 2, 2011…“From Tired Buildings to Slick New Offices,” by Antoinette Martin

Jack Finn & Co. Building Contractors, LLC has expanded the company’s focus to include commercial development in Montclair, NJ.

Three completed projects were featured in the NY Times.

Montclair Magazine Back to School, 2012…“Location, Location, Location” by Cindy Schweich Handler

Jack Finn & Co. Building Contractors, LLC re-purposed residential home in Montclair, NJ.

North Jersey Media Group / Montclair Magazine

  • We are there for you

    At Jack Finn & Company we pride ourselves on our ability to tailor each project to the needs and expectations of our clients.

  • Do your Homework

    Certifications & Credentials

    We are registered with the state of NJ Division of Consumer Affairs as a licensed general contractor. All of our Project Managers are certified in the new EPA guidelines for lead safety practices: Lead Base paint Renovation, Repair and Painting Program (RRP).

    We are fully insured as are our subcontractors.

  • Attention to Detail

    Our Project Manager coordinates every phase of the project by scheduling the subcontractors on-site, placing material orders and inspecting material deliveries and ensuring your project stays within budget.  Our Project Managers oversee the project from beginning to end.

  • Where We Work

    Jack Finn & Company’s Current Jobs Gallery via Social Media, allows us to showcase the work we are beginning and is in progress, including both residential and commercial projects.

    Currently we are working on houses and business throughout New Jersey.  Some of the towns we are working in are Red Bank NJ, Montclair NJ, Essex Fells NJ, Glen Ridge NJ, Florham Park NJ.

Before and After Transformations

Jack Finn & Company’s Construction Library, allows us to showcase the General Contractor jobs we are beginning, are in progress and have concluded  including both residential and commercial projects.

Some of the towns we are working in are:

  • The Wilson, 307 Bloomfield Ave Caldwell NJ
  • Grover House, Caldwell, NJ
  • Roof Deck, Montclair NJ
  • Simplified Living, Verona NJ
  • Condo, Montclair NJ
  • Library, Chatham NJ
  • Contiguous Living, Glen Ridge, NJ
  • Loft Space, Montclair NJ
  • Fleet Feet, Montclair NJ

  • 211 Broad Street, Red Bank, NJ
  • Vault 491, Montclair, NJ
  • Mediterranean Villa, Montclair NJ
  • Montclair Film Festival

We encourage you to view our work and contact us.

What others say about us

April 27, 2023
Jack Finn & Co.
105 Grove Street
Montclair, NJ
Re: Montclair Historic Preservation Commission 2023 Awards

Congratulations! The rehabilitation of the property at 17 Watchung Plaza has been selected as a recipient of the 2023 Bricks and Mortar Preservation Award from the Montclair Historic Preservation Commission.
The Bricks and Mortar Preservation Award recognizes excellence in the preservation and restoration of historic buildings, interpretation of architectural features and compatible design in new construction, and adaptive reuse of historic structures. ….

Tommy Scibilia, PP, AICP
Montclair Historic Preservation Commission

Read the full Testimonial

Joyce and I can’t thank you enough for the work you and the team have done, it’s always complex to “rebuild” an existing structure.  Your professionalism, competence, responsiveness, pricing and expertise is the best we have ever experienced.

Thank you,

Joyce and Gerry

Dear Jack

Our family hopes you and yours are safe & healthy.

We want you to know especially now, how much we appreciate the work you & your team did to make our house a home.

Please know, we never took it for granted.  This year though – what we already loved – became our sanctuary.

And we are safe.

Thank you so much

image of Coronavirus Disease 2019 (COVID-19)

We’re happy that we opted to continue the work upstairs. Wanted to send you a quick note on how much I appreciate how respectful EVERYONE is with wearing facemasks, social distancing, and just being in our home in general. You might say it’s the right thing to do, and I’d agree, but it’s another thing to get everyone to comply. I walk around my neighborhood and I feel like people are getting relaxed about it. So thank you. I was so happy to see the plastic between our first floor and basement come down today!!

“We have had the opportunity to work with many builders over the years and Jack Finn and Company have been the very finest of the lot.  Jack and his team have flawlessly executed three major home remodeling projects and a number of smaller jobs for us over the past twelve years.

Dream Cellar Montclair NJ

As we get ready to paint, I told both John and Dennis today that we couldn’t be happier with their work and the craftsmanship that’s gone into the trim and cabinetry installation. Regardless of how much work went into what’s behind the walls and ceilings, what we’ll see everyday is the finishes. I know trim can go up super fast and shoddy, and I appreciate that you have an excellent team who does really precise installations.

Jack is the contractor on our current construction project which is nearing completion.

Every project is unique. my wife and I have been delighted with his services on ours.  As we come to the end, it looks as if his teams will finish on time, on budget and with excellent workmanship and attention to detail….