Y- LONGZZ CONSTRUCTION

Y-Longzz Construction is a Quincy general contractor that homeowners hire for full home renovations — basement remodels, additions, whole-house rebuilds — rather than small repairs, with Derek Feilong Zhang named across its reviews as the one running the jobs. Its Massachusetts home improvement contractor registration is active, verified directly against the state registry. Houzz and BuildZoom separately list a construction supervisor license (CSFA-106623) attached to the business; that number hasn't been independently verified, though Massachusetts commonly issues a company registration and a personal supervisor license side by side, so carrying both isn't a discrepancy. Its review record runs from October 2023 into March 2024, and every review on file across Google and Houzz is five stars. In that window, one homeowner described hiring Derek to remodel a basement and said he handled every problem well; another credited the team with a new kitchen and deck they said they wanted to spend every day in; a Houzz reviewer wrote about a new bathroom addition and said they were very satisfied; and a rental-house renovation reportedly rented out quickly once finished. Worth knowing before calling: there are only nine reviews on file across five sources, and BuildZoom's own profile shows two active licenses but zero customer reviews on that platform. Nothing posted is more recent than March 2024, so there isn't a current, 2026 track record to point to. For a bigger renovation — a basement, kitchen, or bathroom addition rather than a quick fix — this is a licensed, consistently well-reviewed company; worth confirming current availability and asking for a recent reference given how compact the review history is.