In Residence Districts without a letter suffix, and in M1 Districts paired with Residence Districts without a letter suffix, any portion of a building that exceeds the maximum transition height shall be subject to the following tower regulations:

1. For residential stories, each tower footprint shall not exceed a gross area of 10,000 square feet, exclusive of the square footage contained in any permitted dormers.
2. The provisions for maximum width of towers facing a shoreline set forth in paragraph (d)(1) of Section 62-343 (Height and setback regulations in other medium- and high-density districts) shall apply, except that:
   1. beyond 200 feet east of 5th Street, north of Anable Basin, such maximum widths need not apply; 
   2. for towers that face a single shoreline, the following modifications shall apply:
      1. where such shoreline is the northerly portion of Anable Basin, the maximum width of such tower face may be increased to 115 feet;
      2. where no setbacks are required pursuant to Section 117-342 (Base heights, minimum setbacks and articulation), the maximum width of such tower may be increased to 130 feet; and
      3. where such shoreline extends between the prolongation of 44th Road and 44th Drive, the maximum width of such tower may be increased to 130 feet.
         
         For the purposes of this Section, wherever a tower faces a shoreline but there is a separate building located between such tower face and the shoreline, such tower face shall not be considered to be facing the shoreline along that frontage.
3. The minimum distance between any two towers on the same or an adjoining zoning lot shall be as follows:
   1. for towers facing the northerly or southerly shoreline of Anable Basin east of 5th Street, or the prolongation thereof, there shall be a minimum of 100 feet between any two towers; and
   2. in other locations, the regulations governing underlying distance between buildings shall apply, except that the maximum length of overlap between any two tower faces that are located within 100 feet of another tower face on the same or an adjacent zoning lot, as measured perpendicular to each tower face, shall not exceed:
      1. 100 feet, at or below a height of 500 feet; or
      2. 75 feet, for portions of towers that exceed a height of 500 feet.
4. Tower heights shall be subject to the following limitations:
   1. in M1 Districts paired with R8 Districts, tower heights and locations shall be limited in the following locations:
      1. where located north of Anable Basin, the maximum tower height south of 44th Drive shall not exceed 500 feet; and
      2. where located south of Anable Basin, towers shall only be permitted within 100 feet of 5th Street, and the maximum tower height shall not exceed 500 feet;
   2. in all other locations, no maximum height limits shall apply to towers. However, for towers that exceed a height of 500 feet, the gross area of any story within the highest 15 percent of the building shall not exceed 90 percent of the gross area of that story located directly below the highest 15 percent of the building;
   3. there shall be at least 50 feet in height difference between any two immediately adjacent towers on the same or an adjacent zoning lot. For zoning lots separated by Anable Basin, this provision shall apply only to immediately adjacent towers on the same upland portion of the Basin; and
   4. the penthouse allowances set forth in paragraph (c)(1) of Section 62-34 (Height and Setback Regulations on Waterfront Blocks) shall not apply.