R.I. Gen. Laws § 45-32-18: Provisions for control of uses.

No plan shall be approved unless it provides for the retention of controls and the establishment of any restrictions or covenants which may run with the real property sold, leased, or otherwise disposed of for private or public use for those periods of time and under conditions that in the judgment of the legislative body are necessary to effectuate the purposes of chapters 31 — 33 of this title.