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"not sure how there are so many good reviews. the company does not stand behind their work and 100% satisfaction means nothing. After a bad installation, where coolant leaked multiple times, air in the gas line, defective pump, cracked condensation pipes , leaking rain in unsealed roof exhaust, gaps in newly installed ductwork. They told me to find someone else to service the system after I left a bad review."

"Did a good job on the kitchen cabinets and walls came out good new floor installed came out good kitchen window was installed fine but the wood trim very disappointed when removing wood trim to replace window installation was good but when trim was put back on what a disappointment they put the trim on and siliconed the openings so mwater and air would not come in silicone all over the wood nail holes were covered with silicone instead of wood filler wife and I were very disappointed he was suppose to clean and remove soot from wood and then refinish per insurance estimate he told me he did not put it in his estimate so in order to fix it I would have to pay to have it done the quality of the trim is not professional work see enclosed photos"

"Sam Rosario Construction is NOT licensed, he's NOT insured, he is NOT an insurance expert and he doesn't offer any warranties. His contract doesn't meet Mass Law requirements. His crew is paid in cash and they aren't protected by Workman's Comp. Check for yourself at madpl.mylicense(dot)com/Verification/Search.aspx All you really need is his name, the following categories and "MA" to see that he is not licensed. "Builders License" "Construction Supervisor""

"Michael and his crew built a large addition to our house on what was once a walk up attic. The homeowners supplied approved prints, engaged the architect, and handled processing a variance with the city. Michael acquired the permit and provided the building/contracting services. The permit was acquired in August, work did not begin until November, and the permit was closed in September the following year. Overall, Michael’s direct employees (foreman, carpenters, and painters) did a good job; finish work was excellent. However, his subcontractors (plumbing, HVAC, electrician) repeatedly caused substantial trouble and showed a lack of care/understanding in their work. Plumbers shouldn’t pretend to be electricians, and HVAC contractors should engineer their install and follow manufacturer’s specifications - it’s not a guessing game. Michael himself was at times easy to deal with and understanding (like when our attic was flooded causing damage to the lower two floors), and other times patronizing and seemingly unaware of his own subs schedules. Poor project planning early on w/material lead times (windows) lead to no attic insulation over the winter & a pest infestation. Quoting & invoicing from Michael had double counted items and was obviously copied over from a previous project, while leaving out key items such as masonry work. Multiple mistakes set the project back and cost us time, sanity, comfort, and money (some of which was reimbursed). The list includes: frying the main thermostat (multiple times), shorting out the boiler control board, reversing hot/cold water lines, leaving water to the house mostly shutoff, the list goes on… None of these problems were identified by the contractors but left for us (homeowners) to discover in a string of unfortunate test scenarios during the evening. To Michael’s credit most were fixed reasonably quickly. The HVAC subs were probably the most consternating, repeatedly demonstrating a lack of understanding in their own profession which at several points nearly derailed the entire project. As the last laugh the project was ‘finished’ without ever testing the heat in the new 3rd floor, and the A/C system still struggles with low cooling demands. We would not recommend hiring them for a major addition. We do not trust their subcontractors. If you have a simple painting, carpentry, bathroom, or kitchen renos they can probably handle it."