July 2, 2014
A focus on energy efficiency is the most important development and design strategy that is making new housing greener according to a recent industry survey.
McGraw Hill Construction’s (MHC) data and analytics team surveyed a set of NAHB single-family and multifamily members in 2013. The survey found that 62% of single-family builders and 54% of multifamily developers are doing more than 15% of their projects as green. For single-family, 19% of builders are doing more than 90% projects as green. The survey indicates that increasing consumer interest is a reason for growth in this area. MHC defines a green homes as “one that is either built to a recognized green building standard or an energy- and water-efficient home that also addresses indoor air quality and/or resource efficiency.”
According to the report, 75% of single-family and 84% of multifamily builders indicated that improved energy efficiency was a factor making their projects more green than two years ago.
The second leading factor was improved indoor environmental quality. 58% of single-family builders and 55% of multifamily developers cited this as a reason why their current projects are more green.
Other leading factors include more water conserving products/practices and material conservation and recycling.
However, the data from the survey also show that only 11% single-family builders and remodelers are constructing homes that are greener in 2013 than in 2011. This result makes sense given the start and stop nature of the housing recovery and tight credit conditions of recent years.
May 22, 2014
Energy efficient windows emerged as the leading green product among remodelers responding to NAHB’s Remodeling Market Index (RMI) survey for the first quarter of 2014, as nearly 9 out of 10 remodelers surveyed said they’d commonly used low-e windows during the past year. Next on the list were high efficiency HVAC systems and programmable thermostats at 70 percent each, closely followed by ENERGY STAR appliances at 69 percent.
Although the features at the top of the list all involve energy eficiency, the term “green” is usually defined more broadly than that. Moisture control, for example, is classified as green here, because it results in some components of the home needing to be replaced less often, reducing environmental impacts associated with manufacturing, transporting and installing those components over time. The list of 23 green products and practices used in the RMI survey is based on the major sections of the National Green Building Standard (which can and should be applied to remodeling as well as new construction).
Given the difference in cost, it’s perhaps surprising that use of program-mable thermostats is no more common than use of high efficiency HVAC among remodelers. Anecdotally, several NAHB members have reported that a small but discernible share of their customers tend to resist devices that require programming. A similar result was found in a survey on green products and practices used by single-family builders.
It’s also interesting that, across the two surveys, the same four green features appear at the top of the list and in the same order for both remodelers and builders. The remodelers’ percentages tend to be a little lower, but this is natural, because not every remodeling project involves every home component. High efficiency HVAC systems, for example (the second ranked green feature for both builders and remodelers) are commonly used by 90 percent of builders, compared to 70 percent of remodelers. But remodelers who specialized in projects like replacing windows or building decks in 2013 may have seldom if ever needed to install HVAC systems, while builders of new homes would have, at some point, dealt with every aspect of HVAC.