Valli Construction Co Inc

Valli Construction Co Inc is an excavation and site-work company whose own website lists septic, sewer and drainage system installation and repair, foundation preparation, site development, water line work and land clearing. The company says it has been in business 125 years. Its Connecticut home improvement contractor registration, HIC.0507425, held by VALLI CONSTRUCTION CO INC, is active on the state registry. A recent customer said the company answers all your questions on installing a riser on the septic tank. One recent customer worked with Valli for more than 2 years on a home build project. A recent customer said the team completely transformed their front yard and was professional and timely, and one more said Jacki was in constant contact and kept them updated on their arrival. A 2026 customer wrote that Valli Construction, of Portland, CT, did the site prep work for a 58’ x 40’ shop building planned for that customer's backyard, and named Mike as the owner, Tom on excavation and Jackie in the office. A 2026 customer hired the company to excavate and crush a well, said it explained exactly what had to be done and how, and said there was nothing to clean up afterward. In a 2025 review, a homeowner described a sinkhole that opened in a residential driveway over underground gutter drains. That 2025 customer said Valli brought in a third-party professional with a scope to locate the problem, then removed large boulders and fill, installed new drain pipe, backfilled and graded, and coordinated with a paver the customer paid directly. A 2025 customer whose septic system was failing said the hookup to city sewer meant removing a 150 year old oak tree, redirecting indoor pipes and excavating across the back and north side of the house, with Mike Brown leading the work. In a 2025 review, a local realtor said Mike and Riley looked at a client's septic issue, gave a quote and a repair date, and completed the work within their time constraints. A 2022 customer said the company replaced a septic tank and then the rest of the system when problems were found, working with the Chatham health district on the plans and permits. A 2022 customer said Mike was in constant contact on a large demolition project in Old Saybrook that finished right on schedule.