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Boulder’s #1 Deck Builder since 2013
Explore the artistry and craftsmanship of our Deck with Rails projects, where we've designed and built 100s of stunning decks across Boulder and its surrounding areas. Our portfolio showcases a diverse range of styles and solutions, providing inspiration for your own outdoor space. With every project, Alex Cosman, the owner of Cosman Construction, is personally involved from consultation to build, ensuring that your Deck with Rails is completed efficiently and to the highest standards. To learn more about what options are available for your project, be sure to check out our Decking, Railing, & Additional Options pages.
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