The implications for such a footloose society is further complicated by a staggering statistic: a roughly 50 percent divorce rate nationally, leading to multiple homes for what was once a single family home. Of course, second home ownership was also on the rise before the financial meltdown, increasing by 22 percent between 1995 and 2005, according to the Harvard University’s Joint Center on Housing Studies. Now we have two (or more) homes (to fill with stuff) only to later sell them, on average, every seven years.

Then when we age, we’re left with the quagmire of what to do with all our accumulated stuff. The solution for many, of course, is to jam it into self-storage lockers. Over the past two decades, self-storage has emerged as a $20 billion industry and comprises over 52,000 facilities, according to the Self Storage Association. In California, many people park their vehicles in their driveway or on the street not because of their famously great weather (no city snow removal), but because their garages are packed full of more stuff.

Florida points out that there are several key trends emerging:

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The system uses lightweight formwork panels, much like those used for poured concrete walls. Once erected, the forms are filled with mortar (concrete without stone) which can be hand-mixed and hand-placed, or which can be mechanically mixed and pumped into place. Typically, the formwork can be removed the day after the mortar is poured. The result is a smooth finish material, little more than a roof is needed to complete the building.

On the downside, this material uses 250 kilograms of portland cement per cubic meter (about 420 pounds per cubic yard), making it fundamentally the same as a concrete building with an enormous carbon footprint stemming from the extensive use of cement in these buildings.

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But do you know about all the amazing green condo developments cropping up across the country? There are gorgeous, cutting-edge eco-friendly condos available or being built now in cities all around the U.S. We can’t possibly cover them all in this post, but we’ve selected a good sample. I will cover green condos in the West next week. Read on to find what might become your dream green home!

In Chicago, eco18 is an interesting development currently underway. Located in Chicago’s South Loop area, it provides access to plenty of public transportation options and also green spaces. eco18 is striving to attain a Gold Certification under the LEED program of the US Green Building Council. This is a lofty goal and we hope they make it! Their plans include a massive green roof, solar water heating, geothermal heating and cooling, rainwater reuse, energy-efficient lighting and much more. You can get a 1 bedroom/1 bath unit for around $285,000 or a 2 bedroom/2 bath unit for about $430,000. Learn more about eco18 here.

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Seems logical, right? But knowing how your transportation costs can affect your decision on where to live isn’t easy. Fortunately, along comes a new online tool that makes it considerably easier.

The Housing + Transportation Affordability Index lets you see which parts of the U.S. are truly affordable when you factor in both housing and transportation costs. The index lets you zoom in and explore 52 metropolitan areas across the country and, to be honest, it’s both fascinating and a little addictive.

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You see, in many poor countries of the world, as it were in ancient Egypt, Sumeria, China, Japan and India, it is not uncommon to use animal waste and other by-products to build houses. Or plant materials like straw bales, bamboo, grass, reeds, sedges, and rattan, as well as plant fibers and leaves. Cow dung and goat skins are very valuable building materials, but human waste!

In ground-breaking findings by Sheffield University’s School of Architecture Professor, Jeremy Till, it has just been discovered that your urine is good for green building. Urea, the main ingredient of urine, has been known as an excellent binding agent, working even better than water. “They are sustainable in literal, temporal sense…some answers are found in unexpected places. Like the bladder. But are effective in their simplicity”.

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Not a chance you could pull it off unless you’re renegade architect Michael Reynolds, Garbarge Warrior.”

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This fall, the City of Portland sponsored the Portland Courtyard Housing Design Competition, which solicited ideas for urban infill housing that would appeal to families with children. In the face of rising housing costs, Portland has identified shared courtyards as offering similar lifestyle benefits to detached housing, while remaining affordable and increasing urban density.

The competition brief requested that entrants pay particular attention to the potentially conflicting roles of the courtyard space itself. Could a recreational space share turf with automobiles? Could the courtyard offer homeowners some privacy while still being connected to the larger streetscape? And could it fulfill all of these criteria while still functioning sustainably?

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The initial plans for this retail/office/housing complex include two nine-story buildings that will be connected by a pedestrian bridge, rooftop gardens, solar panels, wheatgrass countertops, a Zipcar fleet, and a sustainable educational learning center. The developers will encourage fair-trade businesses to open shop on the ground floor’s designated retail space.

Based on the declared premise that “all sustainability is local”, the new development seeks to meet the goals of environmental sensitivity, social equity, and economic vitality. The possibility of influencing local economys and social environments through large-scale projects such as housing developments is, and always has been, present. Yet when sustainability can be the underlining theme and motivation, the project will undoubtedly have a positive “smart growth” influence. Instead of consuming new land, “green development” Greenbridge Developments LLC seeks to revitalize urban and civic centers though considering the impact of each decision made in the design process.

The most interesting aspect of this project is that, in addition to expecting LEED Gold certification, the project is largely influenced by the “Cradle-to-Cradle” design paradigm articulated in the 2002 book by William McDonough (whose architecture firm headlines the project) and Michael Braungart.

“Contrary to the cradle-to-grave patterns that make, take, and waste- cradle-to-cradle harnesses the earth’s interdependent systems to nourish one process with the ‘waste’ from another, and rely on an eternally renewing flow of resources.”

The duo now runs a practice (MBDC: McDonough Braungart Design Chemistry) in Charlottesville, Virginia that awards cradle-to-cradle certification to materials and products, and consults with businesses on strategies. Simultaneously, McDonough runs his own architecture practice focused on superior sustainable quality. With his experience alone, I would trust that any building he works on would be of the greatest, smartest eco-effective quality.

By utilizing available technology in the most complex and collaborative way, Greenbridge Developments could potentially be a nationwide and worldwide model of sustainable development, economic and urban revitalization, and progressive green design.