23-724 - Height and setback modifications LAST AMENDED 12/5/2024 For #zoning lots# in R5 Districts, without a letter suffix, utilizing the provisions of Section 23-72, inclusive, the following height and setback modifications shall apply: the height and setback regulations applicable to an R5B District set forth in Section 23- 422 (Basic flat-roof envelopes for certain districts) shall apply.