Concrete Contractors in Johnson City, NY

Tré-Gen Team in Johnson City, NY

The business started in 1921 by two brothers, Camillo Dellapenna and Bartolomeo Dellapenna. The brothers ran the business until 1969 when Thomas and John Dellapenna came into the business as the second generation until 2003, when Tre-Gen Concrete Corp was founded by Mark T. Dellapenna and Ernestine Dellapenna Kunkel as a third generation family-owned business. Mark T. Dellapenna Jr. is working with his father as the fourth generation in the business.

We have seven long-term employees committed to doing excellent work for residential and commercial projects and municipalities. We are a fully insured, bonded company. We do free estimates and serve Johnson City, Binghamton, Vestal, Endicott, Endwell and the surrounding communities in Broome and Tioga counties in NY and Susquehanna county in PA.


Expect top-quality workmanship on arrange of residential, commercial and municipal concrete and blacktop projects, like retaining walls, concrete floors, patios, swimming pool decks, sidewalks, driveways, curbs and more.


Tré-Gen Concrete Corp. is a full-service concrete contractor specializing in poured concrete walls, retaining walls and foundations – expertly completed from start to finish for long-lasting performance.


We’re the area specialists for drainage work, drain and sewer repairs and cleaning, basement waterproofing, sump pump installation, gutters and downspouts and water and sewer line installation, service and repair.

Tré-Gen Team


Dear Mark,
Thank you so much for our beautiful new driveway! It’s a pleasure to work with you.

Sincerely, Jane

Dear Mark,
Thank you for the great job done on the walls and floor in the laundry room. It looks great and I appreciate it so much. I’m pleased to have your knowledge as I now know that you did a far better job than I could ever have done. So happy I called you. Your crew was very kind and most helpful, too. I’m sure I asked many questions. They were all very polite and did a great job cleaning up after a real "messy" job. Thanks to you and all—from your office lady to the last finishing job by Jerry. JOB WELL DONE!
Thanks a million:
Sincerely, Ruth

Dear Mark and Company,
Thank you for a beautiful new surface and road at Catalina Blvd. We waited for many years for these improvements. I wanted to tell you all that the neighborhood has been restored to its original beauty. Please inform your staff how professionally they performed their work. I frequently asked questions regarding when and how the work might be completed. The road staff always gave me polite answers and helped me whenever I needed their assistance. Please let them know their kindness was appreciated and their fine work is a delight to drive on at long last.

Most sincerely, a very happy resident on Catalina Blvd.

To All,
Thank you for the work done for me. Everyone was very kind and worked together so well and the job shows it.

Thanks again, Marion Kelsey

Thank you for your work, I am at last pleased.
- Arlene Garfield

We proudly serve the concrete, blacktop, drainage, foundation, deck and patio construction water and sewer line needs of Broome, Tioga and Northern Susquehanna Counties, including customers in these communities: Apalachin, Barton, Berkshire, Binghamton, Candor, Castle Creek, Chenango Bridge, Chenango Forks, Conklin, Corbettsville, Deposit, Endicott, Endwell, Friendsville, Glen Aubrey, Harpursville, Johnson City, Killawog, Kirkwood, Lisle, Lockwood, Maine, Newark Valley, Nichols, Nineveh, Ouaquaga, Owego, Port Crane, Richford, Smithboro, Spencer, Tioga Center, Tunnel, Vestal, Waverly, Whitney Point, Willeysville, Windsor, Great Bend, Hallstead, Little Meadows, Montrose, New Milford, and Susquehanna.