AIA Sustainability

Livable Community Talking Points

Communities across the country have become increasingly concerned with issues of livability. Numerous surveys show that government officials, private businesses, and individual citizens are trying to address the quality of life in their community and how they can preserve or improve it. Because architects can listen to a community's needs and translate them into visible and viable options, architects are a valuable resource to communities seeking to improve their quality of life.

Livable Communities

Good design makes economic sense. An attractive community will draw new residents, jobs, and investment.

Working together, community members can create a vision of what they want their community to be and then implement it.

When the residents of a community create their own plan for the future, they are more likely to trust it and feel a sense of stewardship that will keep the plan relevant, useful, and adaptable to change over many years.

Density and Livability

Good design can create dense developments that are appealing, functional and feel less crowded.

Well-designed, dense housing sells as well as, and sometimes better than, widely spaced homes. Dense, 24-hour neighborhoods are consistently among the top recommended real-estate investments.

The top consumers of compact, auto-independent housing — empty nesters, childless couples, and singles — will make up the majority of American households for the foreseeable future.

Dense developments with a clear identity, nearby shops and recreational facilities, and a sense of community feel more like the traditional neighborhoods many people admire.

Using land as efficiently as possible preserves open space for recreation within easy reach of city dwellers, while protecting the environment and natural systems.

Compact developments offer higher tax revenues with lower per-unit infrastructure costs.

Compact, attractively designed neighborhoods that offer a variety of amenities encourage people to walk, bike, or take public transit rather than drive. High density is necessary to maintain effective public transit.

In a 2003 public-opinion poll, nearly half of the respondents favored designing communities to be more walkable, even if it means they are denser.

People often believe that spread-out, suburban areas are safer than urban neighborhoods, but, in fact, compact communities generally have fewer traffic fatalities and faster police, fire, and ambulance response times.

Public Health and the Built Environment

Chronic illnesses associated with lack of physical activity include obesity, asthma, diabetes, arthritis, depression, heart disease, several types of cancer, and high blood pressure. Obesity is the nation's fastest growing health threat.

Mixed-use communities generate about four times as many walking trips as auto-dependent suburbs. Streets designed for pedestrians rather than for cars, high-density patterns of development, and bike paths and walkways encourage people to walk or bike to run errands, go to school, or commute to work.

Large surface parking lots not only encourage people to drive and intimidate pedestrians but they also create impermeable surfaces that send stormwater runoff directly into waterways, causing flooding and increased concentrations of pollutants.

Psychologists have found that just looking at natural environments, such as a park visible from an office window, restores people's mental, social, and creative functioning. Being in nature, as well as engaging in physical activity, helps reduce depression and boosts health.

Architects can design communities that reduce the "heat island" effect by using green roofs, minimizing paved surfaces, and preserving trees. Green building technology conserves resources.

Between 60 and 70 percent of Americans do not get the recommended daily 30 minutes of exercise. Nearly one-third of Americans are obese, and almost another third are overweight. Regular physical activity can decrease the risk of almost every kind of cancer.

An estimated 300,000 premature deaths in the U.S. in 1990 were due to chronic diseases caused or escalated by physical inactivity. Medical costs of inactivity are estimated to be $76 billion annually.

Obesity in American adults has doubled since 1980, from 15 percent in 1980 to 31 percent in 2000. It is second only to smoking as a preventable cause of cancer. In 1991, 15 percent or more of the population was considered obese in only four states. A decade later, this was true of every state except Colorado.

Only about half of children aged 12-21 engage in regular, vigorous physical activity, and children spend an average of at least one hour each day in cars. Only about one-third of children who live within a mile of their school walk or bike there, compared to 70 percent of their parents who walked or biked to school. Meanwhile, childhood obesity rates have more than doubled since the early 1970s.

Unless current eating and exercise habits change, one-third of all children born in the U.S. in 2000 will become diabetic. Minority groups have a higher risk of developing the disease.

Americans make fewer than 6 percent of their trips on foot, but pedestrians account for 12 percent of traffic fatalities, primarily because of street design that makes walking dangerous. Data suggest that one-third of car-accident fatalities are caused by poorly planned roads, not by driver error or mechanical failure. Children, seniors, and ethnic minorities are most at risk.

Researchers estimate that smog from traffic congestion can cause more than 6 million asthma attacks, 159,000 emergency-room visits for asthma attacks, and 53,000 asthma-related hospitalizations in a single year. During the 1996

Olympic Games in Atlanta, city officials reduced vehicle traffic by as much as 22.5 percent. Ozone concentrations dropped from peak levels by 27.9 percent, and asthma-related medical emergencies decreased by 41.6 percent.

Depression is the leading cause of disability in the U.S. and worldwide. Psychological studies have shown that exposing people to natural environments, even photographs of nature, improves their mood, helps them heal more quickly, increases their work and life satisfaction, reduces anger, and improves productivity.

The Texas Transportation Institute's annual Mobility Report estimates that the average person's annual delay due to congestion was 26 hours in 2001, compared to seven hours in 1982. A person with a 25-minute commute to work could spend 60 hours per year sitting in traffic.

AIA Sustainability