D.C. Mun. Regs. tit. 11, § 2808
2808.1 Except as provided in § 2808.4, the maximum permitted lot occupancy, building height, floor area ratio, and number of stories in an HE Subdistrict shall be as set forth in the following table:
| HE Subdistrict | Maximum Lot Occupancy | Building Height | Maximum FAR | Maximum No. of Stories | |
|---|---|---|---|---|---|
| Min. | Max. | ||||
| HE-1 (19th St) | 80% | 26 ft | 50 ft | 3.0 | 4 |
| HE-2 (20th St) | 75% | 40 ft | 80 ft | 4.8 | 7 |
| HE-3 (Water St) | 80% | 80 ft | 110 ft | 7.2 | 10 |
| HE-4 (Corrections) | 75% | - | 90 ft | 6.0 | 8 |
| Square E (Park) | 20% | - | 26 ft | 0.2 | - |
2808.2 The following FAR limitations on non-residential uses apply within the HE District, but only in the Squares listed below:
| Square | Maximum Non-residential FAR |
|---|---|
| F | 0.8 |
| G | 1.0 |
| H | 0.5 |
| I | 3.0 |
2808.3 Building height shall be measured from the lowest curb level along a street frontage abutting the lot.
2808.4 A hospital located in the HE-2 subdistrict may exceed eighty (80) feet in height, to a maximum of one hundred ten (110) feet, if approved as a special exception by the Zoning Commission pursuant to § 2803.2.
2808.5 Buildings or structures that abut the HE-1 subdistrict shall provide a 12-foot setback from the subdistrict boundary line for any part of the building or structure that exceeds 50 feet in height.
2808.6 Buildings or structures that abut the HE-2 subdistrict, or have street frontage on Burke Street, C Street, C Place, or Massachusetts Avenue, shall provide a 12-foot setback for any part of the building that exceeds 80 feet.
2808.7 Architectural embellishments, such as spires, towers, domes, pinnacles or minarets; penthouses over elevator shafts, ventilator shafts; antennas, chimneys, smokestacks, or fire sprinkler tanks may be erected to a height in excess of that which this section otherwise authorizes, pursuant to the Act to Regulate the Height of Buildings in the District of Columbia, approved June 1, 1910 (36 Stat. 452, as amended; D.C. Official Code §§ 6-601.01 to 6.601.09 (2001).
2808.8 The portion of Square A devoted to St. Coletta's School shall be subject to Zoning Commission Order 03-21.