Local government organizations have implemented a variety of mechanisms for the preservation of the natural environment. In fact, many local governments have collaborated with the development community to establish programs that consider all vantage points on such matters. In response to sprawling conditions of the post-World War II suburbanization movements, many communities find it more desirable to allow larger numbers of units in smaller spaces than to have fewer units spread out over a larger space, increasing density in certain areas while preserving nature in others. The desirability of increased density stems from its promotion of a healthier and walkable lifestyle through the attraction of mixed use facilities. This results in reduced infrastructure costs due to the compactness of development, which promotes higher property values because of its proximity to urban centers. As more Millennials migrate to vibrant urban environments rather than sprawled suburban neighborhoods, the market demand for city centers and high density developments will only increase.