NYC Local Laws · Defined
Local Law 147 of 2021: Major-building site safety coverage
Changes the major-building definition used to determine certain NYC construction site safety supervision requirements.
New York City jurisdiction · Sources checked September 15, 2026. Law numbers repeat by year. These educational summaries are not legal advice or a complete compliance checklist. Later amendments, agency rules, building characteristics, and effective dates determine the requirements for a particular property. Use the linked City sources to confirm current obligations.
Why it matters
A project can require additional safety supervision even when the team considers it a modest building. Check the current definition and implementation provisions using the actual building characteristics and work scope. The resulting staffing belongs in the construction budget and schedule.
In practice
A project example
A developer confirms required safety staffing during preconstruction instead of carrying supervision costs from a smaller prior project without checking applicability.
Technical references
General educational guidance from KOW Building Consultants. Examples are illustrative, not project records. The applicable contract, standard, program, and jurisdiction control the requirements for a specific assignment.