In addition to the the general cluster guidelines, Reston Association maintains cluster standards that are specific to Old Westbury. Cluster standards are design specifications for certain exterior elements of the cluster architecture that define basic requirements or limitations. The original standards for Old Westbury were submitted by the contractor who built the houses. All changes to or deviations from the original standards that have been reviewed and approved by the RA Design Review Board (DRB) are recorded by RA staff in a notebook.
Old Westbury Cluster Association allows the original 1983 color palette and the 2020 approved additional James Hardieplank colors. The following chart represents all of the available colors for siding, trim, door/storm door, windows, and shutters.