Currently, 37 states, covering almost 90% of the US population, have adopted at least the 2009 International Energy Conservation Code (IECC). Adoption is only the first step to more efficient buildings. To generate the promised energy savings, builders need to comply with the code. There have been many studies done to evaluate code compliance over...

Rigorously enforced stringent building codes can cost effectively achieve energy savings, reduce energy bills and curb greenhouse gas emissions. This paper combines on-site data from some 800 dwellings, energy use information, survey data and computer simulations to evaluate the impact of the most recent energy efficiency provisions of the British Columbia Building Code on residential...

While government policies aim to increase residential energy efficiency, policymakers know little about the efficiency of the U.S. housing stock and improvements in efficiency over time. This paper estimates the average space heating efficiency of U.S. homes, improvements in residential space heating efficiency over time, and impacts of building energy codes on residential space heating...

This guide provides local governments and other urban leaders in cities around the world with the background, guidance, and tools to accelerate building efficiency action in their communities. The primary intended audience is local government officials in urban areas.

Thirty measures are presented in this report, as part of a construction “industry transformation framework”. The report describes and promotes the effort needed by all stakeholders for the industry to fully realize its potential for change.