41 years ago Denis Hayes, a young activist with a vision for a post-carbon energy future, organized the first Earth Day. That day of celebration and teach-ins was my first realization of how the resource flows through buildings impact the land, air and water. I grew up with a great appreciation for the indigenous earth, [...]

8 dwellings 145-151 Laurel St. Northern Liberties, Philadelphia 2009 The first LEED for Homes Platinum duplex residences in the U.S.A. This eight unit residential project explores the highly efficient and architecturally latent potentials hidden within the traditional form of the Philadelphia “Row” home. The vertical rhythm, regularity yet diversity of this most prevalent residential urban [...]

In previous posts, we have looked at the addition of a green roof over a garage at a residence located on a steep slope which provided the clients with a planted space in the front of the house.  In a second post, we looked at the implementation of a green roof as a key design [...]

In this Sustainable Sidebar product post, we’ve decided to highlight a few sustainable surface materials durable enough to handle the daily wear-and-tear on your dwelling, but won’t harm your conscience. Made with recycled content, rapidly-renewable resources, natural composite materials, or all of the above, these products are healthy for you, your home, and the environment… [...]

 We have been designing large-scale residential and commercial rainwater harvesting systems in California since 1997, primarily for irrigation use in the landscape. We like to consider our landscapes that incorporate rainwater harvesting as “closed loop systems,” as we begin the design by determining our end-water usage.   It Starts with Plant Selection   It starts with the [...]

Advances in green technology and a fondness for reused or reclaimed materials have led to more innovative and creative sustainable products for the home. As a new addition to Green Architecture Notes, we will be posting a new section on products that we find to be perfect examples of how green IS beautiful, practical, and inspiring.  [...]

Cork is a fantastic, 100% natural, material that has been used as an insulting material for years, although is not well known by most of the people working on sustainable and zero carbon projects.  So what makes this material special?  Cork is the bark of Cork Oak (Quercus Suber), collected every 9 years and later [...]

There has been a lot of discussion recently about fly ash in concrete as there are concerns about heavy metals in this by-product of coal fired power production.  “Replacing Portland cement is a high priority for all of us…” Russell Perry, Smith Group.  “The Environmental Building News” (Alex Wilson) continues to support the use of [...]

I’ve had several reasons for designing living roofs and have faced many challenges in implementation. Luckily living roofs can come in many forms and serve many purposes. In this post, I will try to briefly walk you through the second of my forays into this exciting and challenging subject. For our House Ocho project in [...]

My wife, Cathy, and I really liked our one-story cottage near downtown Palo Alto, but the floor plan didn’t work for us at all. The most direct path to the backyard was through the master bedroom, and loving to backyard-entertain as we do, running through our bedroom with plates of meat headed to the grill [...]