Inadequate, crowded, or costly housing can pose serious problems to children's physical, psychological, and material well-being.76 Housing cost burdens, especially at high levels, are a risk factor for negative child outcomes, including homelessness, overcrowding, poor nutrition, frequent moving, and lack of supervision while parents are at work.77 The percentage of households with children that report that they are living in physically inadequate,78 crowded, or costly housing provides an estimate of the percentage of children whose well-being may be affected by their family's housing.
Indicator PHY4: Percentage of households with children ages 0–17 that reported housing problems by type of problem, selected years 1978–2007

NOTE: Data are available for 1978, 1983, 1989, and biennially since 1993. All data are weighted using the decennial Census that preceded the date of their collection.
SOURCE: U.S. Census Bureau and U.S. Department of Housing and Urban Development, American Housing Survey. Tabulated by U.S. Department of Housing and Urban Development.
76 Papers addressing specific housing-related health issues are available at http://www.hud.gov/offices/lead/researchers.cfm.
77 Bridge, C., Flatau, P., Whelan, S., Wood, G., and Yates, J. (2003). Housing assistance and non-shelter outcomes. Sydney, AU: Australian Housing and Urban Research Institute.
78 Physically inadequate units are defined as those with moderate or severe physical problems. Common types of problems include lack of complete plumbing for exclusive use, unvented room heaters as the primary heating equipment, and multiple upkeep problems such as water leakage, open cracks or holes, broken plaster, or signs of rats. See definition in Appendix A of the American Housing Survey summary volume, American Housing Survey for the United States: 2007, Current Housing Reports, Series H150, U.S. Census Bureau, 2008.
79 Paying 30 percent or more of income for housing may leave insufficient resources for other basic needs. See National Academy of Sciences. (1995). Measuring poverty: A new approach. Washington, DC: National Academy Press.
80 The U.S. Department of Housing and Urban Development considers renter households to have "priority" housing problems if they have eligible incomes for, but do not receive, rental assistance, and they report either severe housing cost burdens or severe physical problems with their housing units. Because of questionnaire changes, data after 1997 on assisted families, priority problems, and severe physical problems are not comparable to earlier data.
81 The U.S. Department of Housing and Urban Development defines "very-low-income renters" as renter households with incomes at or below half the median family income, adjusted for family size, within their geographic area.