Elderly housing intended for 80% occupancy by households consisting of at least one person 55 years of age or older shall include facilities or provide services which specifically address the unique needs of this population, unless it is determined that the provision of such facilities or services is not practicable or that such housing is necessary to provide important housing opportunities for older persons. A description of the facilities or services proposed, and the methods proposed to secure continuation of such facilities or services, shall be included in the land development application and the special exception application, as required. The design of services or facilities proposed in conjunction with the elderly housing shall comply with all applicable regulations. If regulations are not specified for the services or facilities proposed, or if additional conditions are required, the Zoning Hearing Board, through review of the special exception application, may impose such conditions as necessary to assure that the intent of this chapter is met.