Best 15 Sustainable Design Companies in Philadelphia, PA
Find top-rated Philadelphia, PA sustainable design services for your home project on Houzz. Browse ratings, recommendations and verified customer reviews to discover the best local sustainable design companies in Philadelphia, PA out of 525 on Houzz
At OFA, we're a team of seasoned professionals united by a passion for thoughtful, sustainable design . With decades of combined experience in architecture, construction, and development—and credentials in Passive House and LEED—we create buildings that are as energy-efficient as they are enduring.

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12 Best Sustainable Architecture firms in 2026
The most inspiring residential architecture, interior design , landscaping, urbanism, and more from the world's best architects. Find all the newest projects in the category Penthouse .

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Trillium Architects
Trillium Architects is one of the leading architectural firms that designs sustainable clean energy homes in the Northeast.
Penthouses Explore the epitome of luxury living with our collection of stunning penthouses . This category features exquisite penthouse designs from around the world, showcasing sophisticated interiors, breathtaking views, and unparalleled amenities. Discover how architects and designers create these exclusive spaces, blending opulence with comfort to deliver the ultimate urban living ...
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