The Impact of Home Size on Sustainability
Last Updated: Apr 11, 2025More and more people are beginning to develop ecological awareness and conscious consumer habits. While this is undoubtedly a good thing, it is not without difficulty. One of the most significant hurdles of living a more sustainable life is that it can challenge us to change certain aspects of our livelihoods fundamentally. Deep change - changing the way we live, how society is organized, and the underlying values of our culture requires going beyond simplistic solutions. These solutions must follow a scientifically proven path to lessen our impact on the world that sustains us.
The first steps to sustainability in the housing industry are swapping your incandescent light bulbs for LEDs or investing in a programmable thermostat. However, these changes do not make a home suddenly "green" or "sustainable." While several smaller solutions can add up to a more significant overall impact, it is vital that homeowners, on a large scale, begin to address one of the fundamental aspects of home sustainability: its size.
Table of Contents
- How Big Is the Average Family Home?
- The Impact of Mini-Mansions on Sustainability
- The Root of the House Size Problem
Regrettably, many construction companies and contractors feel the marketing impetus to build larger homes without pushing the price sky-high. So, they are cutting corners during the construction of homes and are producing lower quality construction to increase the overall square footage at a reasonable price to the buyer. The banks and other mortgage lenders also play a role in this situation. These institutions often coerce home buyers into opting for homes with artificially high value simply due to the square footage.
Compared to other developed countries worldwide, the average house size in the United States is astronomically high. In the UK, another cold climate country with a similar economy to that of the United States, the average house size is just over 800 square feet.
The Impact of Mini-Mansions on Sustainability
Why exactly are large homes less sustainable than homes with smaller square footage? Firstly, the amount of raw materials needed to build a 3,000 square foot home is much higher than a 1,000 or even a 2,000 square foot house. Once the home is built, the volume of space inside the homes encourages consumerism. People feel they need to purchase "things" to fill up all empty rooms and areas. On another level, larger homes require more electricity fixtures to light the house and more energy to heat and cool the home.
As we mentioned above, many larger homes are not energy-efficient because contractors need to cut corners to keep the house at an acceptable market price. Lack of quality insulation and other issues can lead to heat loss that even further increases the energetic cost of maintaining a home at a sufficient temperature. The most prominent families are often built in suburban areas where neighborhoods are designed without considering taking advantage of people-powered transportation or the sun and the other elements of passive solar design. The energetic cost of living in an area well removed from urban centers where most people work and play is another added energetic cost associated with the home.
The Root of the House Size Problem
The author, poet, farmer, and agrarian thinker Wendell Berry once wrote:
The basic cause of the energy crisis is not scarcity: it is moral ignorance and weakness of character. We don't know how to use energy or what to use it for. And we cannot restrain ourselves. Our time is characterized as much by the abuse and waste of human energy as it is by the abuse and waste of fossil fuel energy.
For homes to truly be sustainable, we need to discover how to live smaller - with smaller dwellings, less waste, and a smaller impact on the earth. To move in this direction, we need to question the "logic" behind the large homes when shopping for new homes and sustainable housing options. Opting for homes with smaller square footage that are more solidly built, use less raw materials in the construction process, and use much less energy overall will help us all move toward true sustainability at home.
Tobias Roberts
Tobias runs an agroecology farm and a natural building collective in the mountains of El Salvador. He specializes in earthen construction methods and uses permaculture design methods to integrate structures into the sustainability of the landscape.
