R.I. Gen. Laws § 45-29-17

After the filing of surveys or maps, the city and any owner of, or person entitled to, any estate in, or interested in, any part of the land described in the filing, may agree upon the price of the property or easement or right in the property, and that price shall immediately be paid to the owner by the city upon suitable conveyance and/or release of the estate or interest to the city by the owner.