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Stone Patio
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Halsted Welles Associates is a New York City design/build firm based in Brooklyn specializing in urban gardens and green roof systems.  Small but well established, we provide unique design solutions for a high-end residential client base. Our multi-disciplinary team of architects, designers, engineers and horticulturists is supported by in-house construction and service crews. The mission of HWA is to return natural systems to the urban environment.