20375 Point Lookout Road Great Mills, Maryland  20634

Phone: 301-994-9000 • Fax: 301-994-0492
Hours: Mon-Sat: 7:00am - 6:00pm • Sunday:  Closed

Southern Maryland’s Source for Lumber Building Materials & Supplies Since 1921
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Southern Maryland Lumber Yard  •  Southern MD Building Materials
Southern MD Hardware

Dyson Lumber Co., Inc., which trades as Dyson Building Center, is a Southern Maryland Lumber yard, building materials, hardware supplier for homeowners, do-it-yourselfers, government contractors and builders. 

We are one of the oldest family owned and operated building material and lumber suppliers in St. Mary’s County. We are located in Great Mills, Maryland, about ½ mile from the intersection of Route 5 / Point Lookout Road and Route 246 / Great Mills Road.

About Us

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Dyson Building Center’s roots began in the 1920s as a sawmill operation.  Leroy and Marie Dyson took over the business in 1954 and phased the sawmill business out over the next several years to establish a retail hardware, lumber, building supplies, and tool store to serve Southern Maryland.


We provide builders, government contractors and homeowners in St. Mary’s County, Calvert County and Charles County with supplies needed for the remodeling project, home improvement or repair, or new home construction. We know many of our customers by name, offer free coffee and have an experienced staff to help you with product selection to get the job done correctly. So come on in, call or Email us – we are here to help! 







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