Energy Efficient Building Methods Offset By Huge Home Sizes

Despite the wave of green building techniques that have appeared over recent years, the energy efficiency of new houses is being offset by a rising average size of single family homes, which has increased by almost 1,500 square feet since 1950.

1 minute read

October 27, 2006, 1:00 PM PDT

By Nate Berg


"In the past few decades, houses have gotten greener, but they've gotten bigger too, leaving lingering questions: Is super-sized housing defeating conservation efforts? Can McMansions truly be green?"

"Houses are a major place to look for environmental gains. Besides consuming materials like lumber, the residential sector uses 21 percent of the nation's energy, according to the Energy Information Administration (EIA). EIA reports indicate that over the past 20 or 30 years, energy-saving measures like efficient windows and refrigerators have become commonplace."

"Meanwhile, homes have steadily grown from sedan- to Hummer-sized. According to the National Association of Home Builders, the average new single-family home was 983 square feet in 1950, 1,500 square feet in 1970, and 2,434 square feet in 2005. This occurred even as the average household shrunk from 3.4 to 2.6 people."

Friday, October 27, 2006 in E, The Environmental Magazine

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

June 18, 2025 - Diana Ionescu

Two people walking away from camera through pedestrian plaza in street in Richmond, Virginia with purple and white city bus moving in background.

Vehicle-related Deaths Drop 29% in Richmond, VA

The seventh year of the city's Vision Zero strategy also cut the number of people killed in alcohol-related crashes by half.

June 17, 2025 - WRIC

Two small wooden one-story homes in Florida with floodwaters at their doors.

As Trump Phases Out FEMA, Is It Time to Flee the Floodplains?

With less federal funding available for disaster relief efforts, the need to relocate at-risk communities is more urgent than ever.

June 16, 2025 - Governing

Low view of row of red, grey, and black Tesla electric cars.

Texas Safety Advocates Raise Alarm in Advance of Tesla Robotaxi Launch

The company plans to deploy self-driving taxis in Austin with no oversight from state or local transportation agencies.

June 23 - Streetsblog USA

San Francisco Muni bus on street, line 14 with MISSION - Ferry Plaza" on front marquee.

How to Fund SF’s Muni Without Cutting Service

Three solutions for bridging the San Francisco transit agency’s budget gap without reducing service for transit-dependent riders.

June 23 - San Francisco Chronicle

Blue Austin public transit bus with graphic reading "I ride to keep the city clean and earth happy."

Austin Tests Self-Driving Bus

Autonomous buses could improve bus yard operations for electric fleets, according to CapMetro.

June 23 - Smart Cities Dive