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What is NYC AC § 27-306?

Quick Answer

This section outlines how to measure the height of buildings by specifying which appurtenant structures are excluded from height calculations. It details that certain structures, such as roof tanks, chimneys, and parapet walls, are not included unless they exceed a specified percentage of the roof area. Applies to building owners concerned with height compliance.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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§ 27-306 Measurement.

AC § 27-306

In applying the provisions of this code governing height limits, the following appurtenant structures shall not be included in the height of the building unless the aggregate area of all such structures, exclusive of any solar thermal and solar electric (photovoltaic) collectors and/or panels and their supporting equipment, exceeds thirty-three and one-third percent of the area of the roof of the building upon which they are erected: (a) Roof tanks and their supports.

(b)Ventilating, air conditioning, combined heat and power systems, and similar building service equipment.

(c)Roof structures, greenhouses, bulkheads, and penthouses.

(d)Chimneys.

(e)Parapet walls four feet or less in height. Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2011/020.

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