HWA is a published New York City Design-Build-Maintenance firm specializing in rooftop, terrace, and townhouse gardens. For over 50 years, we have worked collaboratively with a distinguished clientele to develop personalized design solutions for lifestyle and functional outdoor living. Our talented, multi-disciplinary team includes designers, horticulturists, artisans, and support staff who are committed to the creation of restorative spaces that integrate essential ecological layers into the built environment. Our gardens help improve quality of life with artistry in design and an understanding of native ecology and practical requirements, enhancing our experiences and our connection with nature.