Costello Construction & Remodeling Inc.

Costello Construction & Remodeling has worked the North Shore since 2005, taking on the kind of big-ticket jobs — additions, custom new construction, historic restorations — that Houzz lists running from $150,000 to $3 million. Sean Costello runs the company as its president, and both licenses it publishes check out: its Massachusetts home improvement contractor registration is verified active, and its construction supervisor license comes back active too. The written record is thin but consistent. A 2025 Google review says working with 'Sean & Roxanne' was great and calls the quality 'top notch,' and three Angi reviews running from 2009 through 2015 describe a positive experience start to finish — respectful crews, a fair and accurate estimate, everything on schedule. Those same three reviews also appear on HomeAdvisor, mirrored rather than separate. The BBB rates the company A+ and lists it as a 21-year-old corporation with no complaints on file, though it isn't BBB-accredited. Permit history backs up the marketing more than the reviews do: BuildZoom's records show 18 projects, including a $200,000 second-story addition in Rowley in 2021, a new single-family home in West Newbury in 2023, and a bathroom addition in Manchester in 2022. One small wrinkle: Angi's profile flags '11 years of experience,' which doesn't square with either the BBB's 21-year figure or the company's own since-2005 claim — likely a stale badge rather than anything substantive. Costello reads like the right call for a homeowner planning a real project — an addition, a custom build, a historic renovation — rather than a quick repair. Given how few written reviews there are relative to the permit history, it's worth asking for recent project references before signing on for work at this scale.