In Subareas A2, A3, B1, B3 and B4, as shown on Map 1 (Special Inwood District – Subdistricts and Subareas) in the Appendix to this Chapter, the provisions of Section 33-42 (Permitted Obstructions) shall apply to all buildings. In addition, along all street frontages, dormers may penetrate a maximum base height in accordance with the provisions of paragraph (c) of Section 23-623 (Permitted obstructions in certain districts), and balconies shall be permitted in conjunction with residential uses as set forth in Section 23-132 (Balconies in R6 through R10 Districts).