Where commuters are wealthier and small town housing markets are weaker than city housing markets, the development of a bedroom community may raise local housing prices and attract upscale service businesses in a process akin to
gentrification. Long-time residents may be displaced by new commuter residents due to rising house prices. This can also be influenced by
zoning restrictions in urbanized areas that prevent the construction of suitably cheap housing closer to places of employment. The number of commuter towns increased in the US and the UK during the 20th century because of a trend for people to move out of the cities into the surrounding
green belt. In the United States, it is common for commuter towns to create disparities in municipal tax rates. When a commuter town collects few business taxes, residents must pay the brunt of the public operating budget in higher
property or
income taxes. Such municipalities may scramble to encourage commercial growth once an established residential base has been reached. In the UK, commuter towns were developed by railway companies to create demand for their lines. One 1920s pioneer of this form of development was the
Metropolitan Railway (now part of
London Underground) which marketed its
Metro-land developments. This initiative encouraged many to move out of central and inner-city London to suburbs such as
Harrow, or out of London itself, to commuter villages in
Buckinghamshire or
Hertfordshire. Commuter towns have more recently been built ahead of adequate transportation infrastructure, thus spurring the development of roads and
public transportation systems. These can take the form of
light rail lines extending from the city center to new
streetcar suburbs and new or expanded
highways, whose construction and traffic can lead to the community becoming part of a larger
conurbation. A 2014 study by the British Office for National Statistics found that commuting also affects wellbeing. Commuters are more likely to be anxious, dissatisfied and have the sense that their daily activities lack meaning than those who don't have to travel to work, even if they are paid more. ==Exurb==