A long time ago, we mentioned the 100k House project developed by Post Green in Philadelphia.  The project involves two attached homes designed by Interface Studio Architects, and one was a case study of sorts to try to build it for only $100,000.  What I liked about the project was its attempt to marry three essential elements: style, sustainability, and affordability.  All too often, these three are hard to put together in the same package.  But the media wave followed, and Post Green seems to have delivered what it set out to do.


As it relates to media disclosures, I should note that when I was in Boston for Greenbuild last year, Post Green’s dynamic duo of Nic Darling and Chad Ludeman bought me a diet coke and German beer fries one evening.  I tried to pay, but they wouldn’t let me.  That’s the kind of group Post Green is.  

These days, the 100k House and the adjacent 120k House is done, so let’s check out what the final project looks like.  The cheaper home is 1,150 square feet, while the more expensive one is 1,270.  Both are less than half the size of homes commonly being built these days.  They’re LEED Platinum certified, an amazing accomplishment given they set out to get LEED Silver.  And they have some of the following green aspects:

  • Solar thermal hot water;
  • Rainwater collection; 
  • Low-flow fixtures and dual flush toilets;
  • Radiant in floor heating;
  • Efficient CFL lighting; 
  • Efficient envelope made with SIPs; 
  • Low- or no-VOC paints and finishes; and
  • Ivy green wall with drought-tolerant landscaping.  

The 100k House project involved a lot of people, and the blog set out some interesting construction minutiae, which you’ve probably already read.  Plus, Green Source just recognized the townhouse prototype as the Best Green House of August 2009.  Post Green has something like 17 more projects in the works, including a Passive House and a Skinny House (built on a thin lot), so we’ll see more of this group over the years.

100k-house-kitchen 100k-house-living


100k-house-stairs 100k-house-exterior


Photo credits: (c) Sam Oberter Photography (except postgreen for green bathroom and project sign photos).