N.Y.C. Admin. Code § 5-351: § 5-351 Definitions.

As used in this subchapter unless otherwise expressly stated or unless the context or subject matter otherwise requires, the following terms shall mean and include:

1. "Real Estate": All uplands, lands under water, the water of any lake, pond or stream, all water rights or privileges, and any and all easements and hereditaments, corporeal or incorporeal, and every estate, interest and right, legal and equitable, in lands or water, or any privilege or easement, thereunder, including terms for years, including all real estate heretofore or hereafter acquired or used for railroad, highway or other public purposes, and liens thereon by way of judgment, mortgage or otherwise, and also all claims for damage to such real estate.

2. "Commissioner": The commissioner of the department of environmental protection.