The Renaissance Condominium Association and the Kenesaw-Phoenix Cooperative, Inc. asked for a permit to demolish 25 original balconies from the historic apartment building located at 3060 16th Street, NW, known commonly as the “Kenesaw.” They contended that a failure to issue the permit would constitute an unreasonable economic hardship for them under the Historic Landmark and Historic District Protection Act of 1978, D.C. Code § 6-1101, et seq. (“Act”) and that approval of the demolition would be consistent with the purposes of the Act. The Mayor’s Agent denied the permit.