Purpose. It is the purpose of these zones to recognize and preserve the character of residential areas located along selected arterials within the City. Because of the existing stock of substantial, well-maintained older homes in some areas, and because of the close proximity to established neighborhoods in others, maintenance of the residential character in conversions or new construction is paramount. It is not the intent that these areas be considered in transition, meaning that they are evolving from residential to commercial use. It is rather the intent that these areas accommodate limited, mixed-use development, if appropriate. It is important that zone requirements and design standards not be sacrificed to allow overdevelopment of properties, as this would negatively impact upon the residential properties within these zones and adjoining residential zones. It is the intent that maintenance or replication of Vineland's historic residential flavor, which would include tree-lined streets and expansive, landscaped front yards, be deemed essential to preserve the desired character. It is the intent that a single-family dwelling be the preferred use of property, as none of the other permitted uses are to be considered unless all other requirements of this chapter can be met. For example, there is not an automatic or implied right to develop a professional building. A professional building should only be considered if all the requirements of this chapter, including design standards, can be met. It is the intent that these zones continue to be mixed use, recognizing that all properties are not suitable for conversion.