Special purpose buildings and properties in Mount Vernon (WA) have limited use of types of business that can be practiced on its premises. This may be due to strict Mount Vernon (WA) zoning laws, the building's layout and design, and the owner's wishes to keep the premises unchanged from its original design and purpose. For example, a Mount Vernon (WA) church may not be turned into a cafe, but can be used for a private school or house of worship.