Grantsville: (301) 895-8121

Browse Our Sales Lots 24 Hours a Day. Learn More.

Lavale: (301) 895-8066

Engineer-Certified Sheds

Built To Last In Grantsville, MD

Casselman Sheds Gallery

At Casselman Sheds, we provide unmatched quality at an affordable price with our custom portable buildings. Whether you’re looking for a garden shed, detached home office or a garage, our professional shed builders will take care of it. 

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Browse On Your Terms

Lots Open 24-Hours

24 / 7 / 365

We understand you might not want to shop for your new shed or portable building with a salesperson pressuring you. At Casselman Sheds, that doesn’t happen anyway, but we keep our lots available and open 24 hours for you to browse our build quality without any pressure whatsoever.