2. The main elements neglected by Evergreen and by LEED are durability, low maintenance, and ease of replacement. In the context of housing expected to perform well throughout a 50-year contract, these are very serious considerations and I'd like to see the baseline "green" standard include more about this. (An obvious example is windows. A project may include good quality energy efficient windows with an expected useful life of 20 years. What's going to happen when they have to be replaced? Can the building envelope be restored to its original functioning? If not, low points! Another example is siding. The best possible choice would be something that lasts more than 50 years with no maintenance and never needs painting. Anything less should receive a lower score.)
3. We could facilitate the shift to an integrated design process by determining which elements are most important to the sustainable operation of an affordable housing project and phasing in requirements that lead to analysis of these elements, moving on to less significant elements. For example, step one might be to require, along with a funding application, a life-cycle cost analysis of three alternatives for the roof, the siding, and the heating/ventilating system for any proposed building. This would be accompanied by explanation of how the selected alternative for each element was chosen and how its selection is related to the maintenance costs and replacement reserves assumed in the operating pro forma.
John deChadenedes | Coordinator, Housing Finance Program | 206.263.9081 | john.dec...@kingcounty.gov | (pronounced "de SHAH de ned")