N.Y.C. Admin. Code § 5-397: § 5-397 Separate reports by the commissioners.

The commissioners of appraisal may, in their discretion, take up any specified claim or claims and finally ascertain and determine the compensation to be made thereon, and make a separate report with reference thereto, annexing to such report a copy of so much of the maps as displays the parcel or parcels so reported on. Such report as to the claims therein specified shall be the report required in this subchapter, and the subsequent action with reference thereto shall be had in the same manner as though no other claim were embraced in such proceeding, which, however, shall continue as to all claims upon which no such determination and report is made.