Portland Deck Builder – Cedar & Composite Decks
At Marathon Builders, we believe a deck should be more than just extra space — it should be the heartbeat of your outdoor living. Whether you’re looking for the warmth of a classic cedar deck or the low-maintenance durability of composite decking, we build with accuracy, craftsmanship, and a vision for how you’ll use the space for years to come.
Cedar delivers timeless beauty, rich grain, and natural resistance to the elements. Composite decking, on the other hand, offers modern convenience, color stability, and long-lasting performance with almost no upkeep. No matter the material, our decks are designed to fit your lifestyle, your property, and your budget — built with precision so exact it feels effortless.
From cozy backyard retreats to expansive entertaining spaces, Marathon Builders is a Portland deck contractor trusted to bring outdoor visions to life.
Scroll down to see examples of our cedar and composite decks, and imagine the possibilities for your own home.
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Composite Decking with Custom railing
Low-maintenance decking combined with elegance.
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Cedar decking with contrast fascia
Contrasting colors are fun and nice to look at. Combining cedar on top with grey fascia creates a unique style.
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Composite decking-privacy screen combo
Sometimes you don’t want to share the afternoon with the neighbors. Privacy screens are here to help.
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Cedar decking and railing combo
Found in backyards throughout the PNW. Top rail smooth enough to rest your hand on, and grain-rich surface for style.