Uses in the Community Center building, which include all allowed uses listed in § 270-67B(1), self-service laundry facilities, restaurants, public and private health centers, public and private gymnasiums, business and rental offices for on-site operations or facilities, and up to 20 one-bedroom and micro-unit apartments. The residences and Community Center building itself are permitted as of right and without site plan review of approvals, but each individual commercial or nonresidential use shall be subject to site plan review when sited within the Community Center building, and thereafter whenever the nature of the approved commercial or nonresidential use shall significantly change.