D.C. Mun. Regs. tit. 11, r. 11-K803
Except as provided in this section, the maximum permitted building height, not including the penthouse or rooftop structure, shall be as set for in the following table:
TABLE K § 803.1: MAXIMUM PERMITTED BUILDING HEIGHT
| Zone | Maximum Height |
| ARTS-1 | 50 ft. |
| 50 ft. (IZ) | |
| ARTS-2 | 65 ft. |
| 70 ft. (IZ) | |
| ARTS-3 | 65 ft. |
| 75 ft. (IZ) | |
| ARTS-4 | 90 ft. |
| 100 ft. (IZ) |
A public recreation and community center shall not exceed a maximum height of forty-five feet (45 ft.) in any ARTS zone.
In the underlying ARTS-3 zone, a building may be constructed in excess of the height limit of sixty-five feet (65 ft.), up to a maximum height of seventy-five (75 ft.), provided:
In the ARTS-4 zone, if a building is located on a lot that abuts a street, an alley, or a zone district boundary with a R, RF, or RA zone, no part of the building, including the penthouse or rooftop structure, shall project above a plane drawn at a forty-five degree (45°) angle from a line located sixty-five feet (65 ft.) directly above the property line on each such street, alley, or zone district boundary line.
Penthouses or rooftop structures shall be subject to the regulations of Subtitle C, Chapter 15 and the height and story limitations set forth in the following table:
TABLE K § 803.5: MAXIMUM PERMITTED PENTHOUSE OR ROOFTOP STRUCTURE HEIGHT AND STORIES
| ZONE | Maximum Penthouse Height | Maximum Penthouse Stories |
| ARTS-1 | 12 ft. except 15 ft. for penthouse mechanical space | 1; Second story permitted for penthouse mechanical space |
| ARTS-2 | 12 ft. except 18 ft. 6 in. for penthouse mechanical space | 1; Second story permitted for penthouse mechanical space |
| ARTS-3 | Except as limited in Subtitle K § 803.3: 12 ft. except 18 ft. 6 in. for penthouse mechanical space | 1 |
| ARTS-4 | Except as limited in Subtitle K § 803.4: 20 ft. | 1 plus mezzanine; Second story permitted for penthouse mechanical space |
D.C. Mun. Regs. tit. 11, r. 11-K803