Overcrowding

According to the World Health Organization, overcrowding refers to the situation in which more people are living within a single dwelling than there is space for, so that movement is restricted, privacy secluded, hygiene impossible, rest and sleep difficult. The terms crowding and overcrowding are often used interchangeably to refer to the same condition. The effects on quality of life due to crowding may be due to children sharing a bed or bedroom, increased physical contact, lack of sleep, lack of privacy, poor hygiene practices and an inability to care adequately for sick household members. While population density is an objective measure of number of people living per unit area, overcrowding refers to people's psychological response to density. But, definitions of crowding used in statistical reporting and for administrative purposes are based on density measures and do not usually incorporate people’s perceptions of crowding.

The standards for overcrowding as defined by the World Health Organization is as follows:

Eurostat uses a stricter definition of overcrowding, known as 'the Bedroom Standard'. An overcrowded household is defined as one which has fewer rooms than the sum of:

For example, a household of a single person living alone is considered overcrowded unless he or she has a living room which is separate from the bedroom (points 1 and 3 apply). However while the Bedroom Standard is generally advocated by policy advocates, statutory space and occupancy standards are usually either less generous, partial (for instance they apply to social housing only) or non-existent.

According to Eurostat, in 2011, 17.1% of EU population lived in overcrowded households by the above definition, with the number varying strongly between countries: the overcrowding rate stood at 43.1% in 12 newest member states compared to only 10.1% in 15 oldest members. Within the EU post-communist states, the extent to which the commodification of housing has improved occupancy standards appeared to be modest. For instance, during 2005-2010 the percentage of overcrowded population in Romania and Latvia remained the highest in the EU (55%). Conversely, the Czech Republic showed the best performance in 2010, with overcrowding falling from 33% to 22% over the period, becoming lower than in Italy and Greece. In the remaining EU post-communist states, overcrowding fell moderately over the period, accounting for 35-49% in 2010. Lifecycle has remained a powerful determinant of overcrowding. Eastern Europeans aged under 18 are on average 2.5 times more likely to experience overcrowding than those aged over 65. Affordability problems of young adults, who had to delay home leaving, contributed to unrelenting overcrowding, but so did the legacy of a housing stock composed of many small dwellings. In the EU post-communist states, between 51-87% of dwellings had no more than three rooms.

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