Compliance Dates

Key Deadlines

LL154 Compliance Schedule

Compliance is determined by the date of the initial General Construction (GC) application filing in DOB NOW — not the construction start date.

Effective Date Building Type Covered Scope Status
January 1, 2024 Group R-3 (1- and 2-family homes) & all occupancies under 7 stories All systems except service hot water In Effect
December 31, 2024 NYC School Construction Authority projects All systems In Effect
December 31, 2025 Affordable housing under 7 stories (≥50% affordable units) All systems except service hot water Active Now
July 2, 2027 All occupancies including buildings over 7 stories All systems including service hot water Upcoming
December 31, 2027 Affordable housing 7 stories or taller (≥50% affordable units) All systems including service hot water Upcoming
January 1, 2024 In Effect
Building Type
Group R-3 (1- and 2-family homes) & all occupancies under 7 stories
Scope
All systems except service hot water
December 31, 2024 In Effect
Building Type
NYC School Construction Authority projects
Scope
All systems
December 31, 2025 Active Now
Building Type
Affordable housing under 7 stories (≥50% affordable units)
Scope
All systems except service hot water
July 2, 2027 Upcoming
Building Type
All occupancies including buildings over 7 stories
Scope
All systems including service hot water
December 31, 2027 Upcoming
Building Type
Affordable housing 7 stories or taller (≥50% affordable units)
Scope
All systems including service hot water
Critical Filing Rule:

The compliance date is triggered by when the initial GC application is submitted in DOB NOW — not when construction begins or a permit is pulled. If a major redesign is required after initial submission, a new application must be filed and will be subject to the current compliance deadline. Don't wait to get your LL154 strategy locked in.

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