In Subarea A3, as shown on Map 1 (Special Inwood District – Subdistricts and Subareas) in the Appendix to this Chapter, for shoreline adjacent lots, the height and setback regulations of this Section shall apply:

1. Base along West 207th Street and Ninth Avenue
   
   Along the West 207th Street and Ninth Avenue frontages, the street wall location provisions of paragraph (b) of Section 35-631 shall apply except that the street wall shall extend up to a minimum base height of 60 feet, or the height of the building, whichever is less, and a maximum base height of 105 feet. The boundary of any easement required for a street or sidewalk widening pursuant to Section 142-64 shall be considered the street line for the purpose of this Section.
   
   At a height not lower than the minimum base height nor higher than the maximum base height, a setback with a minimum depth of 10 feet shall be provided from the street wall of the base. Such setbacks may be modified in accordance with the provisions of Section 23-433.
2. Within 50 feet of the shoreline
   
   Within 50 feet of the shoreline, the maximum building height shall be 85 feet.
3. Within 30 feet of former West 208th Street
   
   Within 30 feet of Former West 208th Street, as shown on Map 1 in the Appendix to this Chapter, the height of a building along 30 percent of the length of a zoning lot, as measured along the former extent of West 208th Street, shall not exceed 30 feet, and the height of the remaining 70 percent may rise to a maximum height of 85 feet.
4. Maximum transition height
   
   Within the portion of the zoning lot that is beyond 100 feet of West 207th Street, after the required setback, buildings may rise to a maximum transition height of 145 feet. No towers shall be permitted above such maximum transition height.
   
   Within the portion of the zoning lot that is within 100 feet of West 207th Street, after the required setback, buildings may rise to a maximum transition height of 175 feet. Any portion of a building that exceeds such maximum transition height shall be considered a tower and subject to the provisions of paragraph (e) of this Section.
5. Tower regulations
   
   Any portion of a building that exceeds the maximum transition height shall be subject to the following tower provisions:
   1. the gross area of any story shall not exceed 10,000 square feet, except that any dormers provided within the setback area shall not be included in such gross area;
   2. the gross area of any story located above 255 feet shall not exceed 90 percent of the gross area of that story located directly below a height of 255 feet; and
   3. the maximum height of such tower shall not exceed 295 feet.