Alliance Deck Builders of O’Fallon

Alliance Deck Builders of O’Fallon designs and builds stunning, long-lasting outdoor spaces across O’Fallon, Missouri, and surrounding communities. We specialize in custom and composite decks, covered patios, screened porches, pergolas, re-decking, and repairs—crafted with quality materials and expert craftsmanship.

From consultation to completion, we manage design, permits, and construction, ensuring a smooth, worry-free experience. Whether you want a cedar deck, a multi-level composite build, or a covered patio for entertaining, we bring your vision to life.

We use trusted materials like Trex, TimberTech, and Fiberon for low-maintenance, weather-resistant decks.

📞 Contact Alliance Deck Builders of O’Fallon today for a free estimate and start creating your perfect outdoor living space.
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