Brooklyn since 2014All five boroughsSame-day response during business hours

What is NYC BC § 403.5.4?

Quick Answer

This section mandates that every required interior exit stairway serving floors exceeding 75 feet above the lowest level of fire department vehicle access must comply with specified sections. An exception applies for occupancy Group R-2 under certain conditions. Applies to building owners of high-rise structures.

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

Michael Nacmias - Founding PartnerMichael Sargo - Partner
From the team atNacmias Law Firm, PLLCBrooklyn-based attorneys representingproperty owners across all five boroughsMeet the team →

403.5.4 Smokeproof enclosures.

BC § 403.5.4

Every required interior exit stairway serving floors more than 75 feet (22 860 mm) above the lowest level of fire department vehicle access shall comply with Sections 909.20 and 1023.11 Exception: Smokeproof enclosures are not required in occupancy Group R-2 unless provided pursuant to Exception 2 of Section 917.1.

Common Questions

Our team

Meet the people you will work with

Free case review

Have a matter that touches § 403.5.4?

Free 15-minute case review with the attorney handling your matter. Same-day response during business hours across all five boroughs — OATH hearings, Housing Court, and real estate closings.

Or email us

[email protected]

An attorney reads every message.

  • Same-day response

    During business hours

  • Direct attorney access

    Same lawyer from intake to close

  • Flat-fee pricing

    On most OATH and closing matters