There are new provisions for energy efficiency coming into effect this December in the BC Building Code. They place an emphasis on air tightness and insulation. There will be an increase in minimal insulation values in attics, basements and walls. As well new code (section 9.36) will require a higher value of air tightness compared to present values.
This focus on energy efficiency adds to the relevance of ‘House as a System’ ideas and concepts. Efficiency measures that, in the past, weren’t cost effective or would take too long to realize a return on investment are now making more and more fiscal sense. So, yes, these concepts add to the initial cost of building new or substantially renovating your house. However, not only are increased efficiencies realized, but comfort and health benefits increase. Couple that with rising energy costs and you may be back in black sooner than you think.