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M. Nelson Barnes & Sons, Inc.

Mechanical/Sheetmetal Contractors

An Employee-Owned Company

Based in Cockeysville, Maryland, M. Nelson Barnes & Sons, Inc. is an industry leader in mechanical contracting with an emphasis on providing Prime Mechanical/Turnkey construction services for our clients. With over 100 years in the mechanical trade and more than 50 years in the sheet metal business, the M. Nelson Barnes team has the experience and know-how to handle any project. 

About Us

Since 1909

At age 26, M. Nelson Barnes founded a small plumbing company in his home at 807 North Howard Street in Baltimore with his wife, Jessie Davis Barnes. This grew to be M. Nelson Barnes & Sons, Inc.

807 n howard full

We’re employee-owned, with great career opportunities. Now hiring Journeyman Plumbers, Apprentice Plumbers, Pipefitters/HVAC,  Sheet Metal Mechanics and Sheet Metal Apprentices!

Join the Team!