​Callahan & Montalto Site Construction is a leader in providing invaluable construction services to our customers by creating a successful relationship during the construction process.  Our pledge is to establish lasting relationships with our clientele by exceeding their expectations and gaining their trust through excellent performance.

​Callahan & Montalto Site Construction, LLC.

To get a quote for a construction project, please email [email protected]
or call 774-696-1204

For Accounting, please email [email protected]

For job inquiries & to submit employment applications,
please email [email protected]

    Have a project in mind?

​Office
800 Main Street
​Holden, MA 01529
Office: 508-210-0331
Fax: 508-829-0500
Cell: 774-696-1204

Yard
2264 Main Street
Jefferson, MA Cell: 774-696-1204

​MONDAY - FRIDAY
7am - 5pm