Such ordinance may require the owner(s) of any private lands upon which, or abutting which, such sidewalk, curb, or gutter is located to: (a) permit the town (or its agents or contractors) to go upon their private lands to perform such work, (b) pay all or such part of the town's cost to perform such work as reasonably and equitably determined by the town, or (c) perform such work as required by t