87-31 - Permitted Obstructions LAST AMENDED 12/5/2024 In the Core and North Subdistricts, the provisions of Section 33-42 (Permitted Obstructions) shall apply to all #buildings#. In addition, dormers may penetrate a maximum base height in accordance with the provisions of paragraph (b)(1) of Section 23- 413 (Permitted obstructions in certain districts).