D.C. Code § 47-859.03
For all Eligible Real Properties certified under § 47-859.02, there shall be allowed as an abatement of the real property tax imposed by § 47-811 an amount computed as follows: $1.50 per residential FAR square foot, multiplied by the building’s total residential FAR square footage as certified by the project architect and the Mayor; provided, that:
July 7, 2009, D.C. Law 18-10, § 2(b), 56 DCR 3598
This section is referenced in § 47-859.02 and § 47-859.04.