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Concrete foundations for homes and additions are the focus of J. Mongillo Concrete Construction. The company says it also handles commercial foundations, offers free estimates and is insured. Hartford Business Journal describes it as a family-run contractor based in Southington and identifies James Mongillo as its owner. Customer accounts describe specific residential foundation work. In October 2022, a homeowner said they hired the company to install a detached garage foundation, praised James’s flexibility when changes were needed and were pleased with the finished product. A November 2021 reviewer praised the precision and attention to detail on an addition foundation. Customers writing in October 2025 praised communication, pricing and schedules. One said James and the team were easy to communicate with throughout the process; another described quality work at a fair price, completed on time. A further reviewer described James as a contractor and partner on many projects. Google shows a 5-star average from six ratings.
“His most recent years were spent at J. Mongillo Concrete Construction, working side by side with his son. Mike took immense pride in the family business of concrete foundations, and was happy to enlighten young prospects to the tricks of the trade.”
“James Mongillo is the owner of J. Mongillo Concrete Construction, a family-run commercial and residential concrete foundation contractor based in Southington.”
Great company to work with. James and his team were very easy to communicate with and professional throughout the whole process. Would absolutely do business with again!
James has been a trusted contractor and partner on many projects and is an absolute pleasure to work with.
James and his crew do great work. They are professional and do quality work for a fair price and do it on time.
James Mongillo and his crew are top-tier! They are responsive, flexible, and do exceptional work. This concrete contractor does it all!
I hired J.Mongillo Concrete to install the foundation of my detached garage at my home. I would recommend James to anyone looking for a quality job, he was very easy to work with, he was flexible when changes were needed and gave me a quality product that I am very happy with.
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1 change recorded — last scanned Oct 31, 2026.
Typical Connecticut range for this kind of work, from regional averages — not a quote from J. Mongillo Concrete Construction. Use it to sanity-check bids, then get the real number in writing.
A 12 × 20 patio is 240 sq ft; a 4-ft walkway is 4 sq ft for every foot of length.
Estimated range
$4,250 – $8,450
Typical masonry project around $6,350
Retaining wall build with fire pit and walkway4.4
Stone walls rebuilt and repaired3.9
Patio built around a pool at a fair price3.6
Precast step installation3.8
