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NYC Building Code

§ 1805.1 — § 1805.1

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What is NYC BC § 1805.1?

Quick Answer

This section mandates that walls or portions of walls that retain soil or rock and enclose below-grade spaces must be waterproofed or dampproofed, except for certain non-residential and non-institutional occupancy groups. The section also specifies that ventilation for crawl spaces must adhere to Section 1203.3. Applies to building owners with below-grade spaces.

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

Michael Nacmias - Founding PartnerMichael Sargo - Partner
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1805.1 Where required.

BC § 1805.1

Walls or portions thereof that retain soil or rock and enclose interior spaces and floors below grade shall be waterproofed or dampproofed in accordance with this section, with the exception of those spaces containing occupancy groups other than residential and institutional where such omission is not detrimental to the building or occupancy. Ventilation for crawl spaces shall comply with Section 1203.3.

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