
Nationwide, approximately 33% of all housing stock is rental units, and in Boulder, CO, rental units represent almost 50% of all housing. With such a significant portion of its housing rented out to tenants, multifamily residential buildings represent a tremendous opportunity for building owners in the city to reduce their energy use and cut down on monthly bills. We’ve written before about the opportunities lying untapped in multifamily energy efficiency, now let’s take a look at what the folks in CO have come up with.