Verified record
When a building floods overnight, Black Diamond is the crew property managers describe showing up the next morning. One manager says they demolished, removed and mitigated the worst of the damage immediately and then watched the site for mold; another, writing in July 2026, praises documentation that reaches ownership with photos and notes on each step taken. The Middleton company handles water, fire, smoke and mold remediation plus the reconstruction afterwards, on a 24/7 emergency line, and says its focus is commercial property across Massachusetts and New England. Its site dates the founding to 2019 under Ryan O'Donnell, a founding member and vice president, with Vedran as general manager, and states IICRC certification. Google shows a 5★ average from 21 ratings, and the 20 written reviews on file, from 2024 through 2026, come mostly from trade customers rather than homeowners — property managers at apartment sites, and a manager at The Hanover Company who wrote in September 2024 about three years of work together across New England. Individual names recur: reviewers in spring 2025 singled out Fernando on the field team and gave a shout-out to the South Shore crew. A homeowner writing in September 2024 described mold remediation and water mitigation at their own house. One item worth raising: a Massachusetts consumer-complaint site lists a June 2025 complaint entry naming the company. For a homeowner with water or mold damage this is a real option, but most of the work customers describe is apartment and commercial. Ask who runs your job day to day, what the 24/7 response covers, and whether the rebuild after the remediation falls under the same contract.
“Complaint #1295893 - Filed from MA”
“| BLACK DIAMOND REMEDIATION INC | SAUGUS | Massachusetts |”
Black Diamond is very quick to responded when needing any emergent remediation needs. The communication and documentation of remediation from the team to the landlord/ownership is clear and concise with photos and notes about steps taken.
I am a property manager and highly recommend black diamond remediation. They are professional, knowledgeable and reliable. Their communication was exceptional throughout the entire project. I am looking forward to working with them on future jobs.
Been a customer of theirs for years. No better service out there! Fast, professional and get the job done right!
I’ve had the opportunity to work with Black Diamond Remediation on multiple projects, particularly in emergency loss situations, and their performance has been consistently outstanding. Their team demonstrates a rapid response to emergency mitigation, mobilizing quickly to stabilize conditions and minimize further damage. What sets them apart is their ability to seamlessly transition from mitigation into reconstruction, supported by a ready and capable reconstruction team. This integrated approach reduces downtime, improves coordination, and ensures projects move efficiently from initial response through full restoration. Additionally, Black Diamond Remediation works effectively with insurance adjusters, providing clear documentation, accurate scopes, and a collaborative approach that helps streamline the claims process. Their combination of responsiveness, technical expertise, and project continuity makes them a highly reliable partner for mitigation and reconstruction work.
These guys are awesome. Super responsive and reliable. They were able to come the morning after a building I manage flooded and were able to demo, remove and mitigate the worst damage immediately, as well as monitor the potential mold damage. They were super communicative and always able to pivot or do more if the job required it. I can’t recommend them enough!
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1 change recorded — last scanned Aug 15, 2026.
Takes on large, difficult projects3.8
Full fire rebuilds4.2