T4 Neighborhood zones are residential zones. T4 Neighborhood-Open zones allow limited non-residential uses. Note that those limited non-residential uses only apply to zones with "-Open" or "-O" in their name or zone string. These zones are intended to be mapped where existing zoning allows non-residential uses, but where existing buildings are house-form. Examples of this include West 6th Street in the Old West Austin neighborhood and East Cesar Chavez Street in the Holly neighborhood.