Census Bureau.

In that same period of time, the number of persons per household has decreased, so no matter how you look at the statistics, the average space each person in this country occupies, has increased in the years since 1973.

In that year, the average single family home contained just 1,660 square feet. In 2015, the average was 2,687 square feet. In 1973, the average family size was 3.01 in that average home.

Now? The average is down to 2.54 in the average house. The median numbers show similar results, although the numbers are slightly different. The important fact, however, is that home sizes have increased by about 62 percent, no matter which figures are used.

Understanding Tiny Home Trends

While the numbers point out the reality that homes today are larger than the homes of 40 years ago, that average is skewed somewhat by the large suburban ranches and even the "mega mansions" that were built in many growing cities and suburbs across the nation.

The raw numbers also fail to address the changes that occurred in those intervening years of urban sprawl. At the same time, there was a reaction forming against conspicuous consumption and ostentatious overbuilding, brought-on in part due to the housing crisis of the "great recession." Shortly thereafter, cities in particular witnessed the birth of live-work spaces that and planned developments with mixed-use zoning, that looked nothing like traditional housing developments. The trend towards higher-density living was becoming mainstream.

Sarah Susanka introduced her concept of "The Not So Big House," promoting the idea that it's not the size of the home, but rather the function of space that should matter to a home's occupants. The innovative young architect was not promoting small, exactly, but she did bring about a new way of thinking. The goal was to fit the home to individual and family needs. The bigger is better mentality began to crack.

Her books, including "Home by Design" and "The Not So Big Life," resonated with the public, and became part of a growing environmental consciousness, which sought to address energy consumption and efficiency as well as lifestyle. It was during those years that green became trendy, and that American consumers began to look at global influences not only for their housing, but for transportation, food production and all other aspects of daily life.

Those transformative years were also characterized by spiraling costs of construction, and the rising price per square foot contributed to a very real sticker shock for new home buyers.

Are Tiny Homes a Realistic Lifestyle Choice?

Various locales were affected in very different ways. In urban centers the steep increases in costs quickly resulted in prices that spiraled out of control. We see the results today in cities like San Francisco, New York and Boston, and the crunch is rapidly spreading across the country.

Newer developments have responded by offering smaller condos and apartments in newly trendy downtown areas, live-work-play spaces that are popular with young professionals as well as retiring baby boomers and younger families.

Susanka's not so big movement has evolved into an architectural mantra focused on excellent design rather than strict concern with square footage, and the transition toward flexible living space. That as well business options that encourage telecommuting and flex-time arrangements will continue to shape the development of contemporary living spaces.

The truth is that tiny houses and micro apartments are probably not a viable choice for long-term living. They are definitely cute; they are fascinating, and they have gained a following. But would you be able to squeeze all your belongings into a space smaller than some walk-in closets and live happily ever after?

Tiny homes simply aren't a realistic lifestyle option for most people; neither are those cute little houses on wheels that are not much larger than a golf cart garage. Furthermore, most real estate experts agree that investing in a tiny home can be significantly more expensive in the long run.

Is there a Future For Tiny Homes?

There is little doubt that real estate prices will continue to climb on average over the next decade. It is very possible that as concern with the environment and with quality of life continue to grow, houses will grow smaller once again. If that is the case, other trends are sure to emerge to create new living environments. They may be substantially different from what we typically think of as home today.

These are exciting times. One thing is certain -- just as families continue to change, and family structure evolves, the family home will survive and thrive, but its future size and shape may be very different. #hw