Common areas and facilities. Subject to compliance with the 100-foot-wide setback requirement as set forth in § 300-250B(2)(a), where applicable, the provision of certain facilities serving the entire development, such as parking lots, interior pedestrianways, driveways or alleys, lighting facilities, landscape planting areas, buffers, open space, recreation facilities, etc., are hereby encouraged and may be located either on individual lots or condominium units, or in common areas in any multifamily or multiunit development. In cases where they are provided in common areas, provisions satisfactory to the Board of Supervisors must be made for their perpetual maintenance and care. The use of these facilities may be restricted for particular residents or users of the facilities, where practical, and may be maintained by the developer, a condominium association or similar instrument.