Verified record
Bostex Builders and Construction Management, LLC is a Newton-based firm that says it's less about swinging a hammer and more about running the job — project management, claims management and construction oversight for commercial and multi-unit residential buildings. The company says it was started in 2021 by John Callahan, who it describes as having more than 30 years of experience in commercial construction and mixed-use development. The two Google reviews on file back that up. In a 2024 review, one client called working with John "simply great," pointing to his professionalism, responsiveness and timeliness on a project. Another 2024 review credits him with project management, sales and estimating help that closed and managed several bids, and says they would recommend him for winning or running commercial or residential jobs. Worth knowing before calling: this is a management and consulting operation, not a crew that shows up to do the physical work — Callahan's role here is coordinating, reviewing and overseeing rather than building. The site also lists a Boston Builder's License, a Massachusetts Construction Supervisor's License, an HIC registration, and Certified Construction Manager (CCM) credentialing; none of these have been checked against a state registry, so it's worth asking to see them directly. For someone who needs a project managed, contracts reviewed, or a general contractor kept honest on schedule and budget, this looks like the right kind of call — just confirm up front what "management" covers on the job.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Bostex Builders and Construction Management, LLC. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$23,000 – $35,000
Typical remodeling project around $29,000
From start to finish, working with John and Bostex Builders was simply great. John was able to help us create exactly what were looking for, while being extremely professional, responsive, and timely throughout the project. Look no further and give John a call for your construction project needs. Thank you!
John has been great to work with! He has helped us with Project Management, Sales and Estimating. John helped us close a few big projects and helped manage them once awarded. If you need help winning commercial or residential jobs or need help to manage them, I would 100% recommend John!
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1 change recorded — last scanned Sep 8, 2026.
Energy retrofit expertise5.0
Named project managers4.8
Custom built-ins4.2
Fair, competitive pricing4.4
Basement flood repair completed while owners traveled3.0
Pool leak two contractors could not find4.5