One of the first questions that should be answered during construction planning in New York City is surprisingly simple:
Does this project require a Site Safety Plan?
The answer, however, is not always as simple.
A project’s height is important, but height alone does not determine whether NYC Department of Buildings site safety requirements apply. The building’s number of stories, footprint, type of work, and specific construction or demolition scope all need to be considered.
And with the definition of a “major building” changing in recent years, relying on an old rule of thumb can lead to problems later in the filing process.
First: What Is Considered a “Major Building” in NYC?
Under the current NYC Building Code, a major building is generally an existing or proposed building that meets any of the following conditions:
- 7 or more stories
- 75 feet or more in height
- Has a building footprint of 100,000 square feet or more, regardless of height
- Is specifically designated by the DOB Commissioner because of unique hazards associated with its construction or demolition
The major-building threshold was lowered effective December 11, 2024. Because of that change, projects that may not have been considered major buildings under the previous thresholds can now fall within the site safety framework. (home4.nyc.gov)
But there is an important distinction:
Being a major building does not automatically mean every type of work performed at that building requires a Site Safety Plan.
The scope of work still matters.
So, When Is a Site Safety Plan Required?
NYC Building Code Section 3310 establishes the site safety requirements applicable to certain construction and demolition operations at major buildings.
Some of the primary triggers include:
1. Construction of a New Major Building
If the proposed new building meets the major-building criteria, a Site Safety Plan is required.
This is where the SSP becomes part of the overall construction planning process, from excavation and foundation operations through superstructure and later phases of construction.
The plan typically needs to coordinate items such as:
- Construction fencing and gates
- Pedestrian protection
- Sidewalk sheds and overhead protection
- Excavation and foundation logistics
- Material loading and unloading
- Cranes, hoists and other major equipment
- Egress
- Adjoining properties
- Horizontal or vertical netting
- Controlled access areas
- Temporary construction operations
The Site Safety Plan is not simply another drawing in the permit set. It becomes the roadmap for how the site is intended to operate safely throughout construction.
2. Vertical or Horizontal Enlargement of a Major Building
An existing building may also trigger site safety requirements when the project includes a vertical or horizontal enlargement and the building meets the definition of a major building.
This is one of the reasons alteration projects should be reviewed carefully at the beginning of design.
A project may be filed as an alteration, but the construction operations involved can still bring it within the requirements of BC 3310.
3. Full or Partial Demolition of a Major Building
Full or partial demolition of a major building can also trigger Site Safety Plan requirements.
There is, however, an important exception for certain interior demolition work.
The current code provides an exception for partial demolition limited to interior components of a major building where mechanical demolition equipment, other than handheld devices, is not used. (New York City Government)
That distinction can make a significant difference.
Removing interior finishes with handheld tools is very different from removing structural members, floor areas, exterior walls or other major building components.
The actual demolition scope should therefore be reviewed, not simply the word “demolition” appearing on the drawings.
4. Certain Façade Projects
Façade work is another area where the requirements are frequently misunderstood.
For 2026, DOB has clarified that site safety requirements are triggered for alteration, maintenance or repair of a major-building façade when:
the building is more than 14 stories or 200 feet in height, whichever threshold applies, and the façade work requires a sidewalk shed.
DOB also clarified in Buildings Bulletin 2026-006 that incidental removal of façade components does not, by itself, convert a façade project below those thresholds into a site-safety project simply because that work technically includes partial demolition. (New York City Government)
This is especially important when reviewing façade repair projects involving removal and replacement of items such as masonry, lintels, parapets, windows or similar exterior components.
Height Isn’t the Only Number That Matters
A common mistake is to look only at the building height.
For example:
“The building is under 75 feet, so we don’t need site safety.”
That conclusion may be premature.
The project should also be checked for:
- Number of stories
- Building footprint
- Proposed versus existing building configuration
- Enlargement
- Full or partial demolition
- Façade work
- DOB designation
- Actual construction operations
Likewise, a building can reach the major-building threshold through its story count even when its measured height appears to be below 75 feet.
Or a relatively low building may still qualify because its footprint exceeds 100,000 square feet.
Don’t Confuse an SSP With a Construction Logistics Plan
Another common misconception is that every project with complicated site logistics automatically requires a DOB Site Safety Plan.
That is not necessarily the case.
A project may still need detailed construction logistics drawings showing items such as:
- Site access
- Fencing
- Sidewalk closures
- Truck movements
- Material staging
- Pedestrian routing
- DOT operations
- Crane or equipment locations
without necessarily being subject to the formal DOB Site Safety Plan requirements of BC 3310.
Conversely, when an SSP is required, it has specific DOB requirements and becomes part of the approved site safety documentation for the project.
The two should not be treated interchangeably.
Determine the Requirement Early
The worst time to determine that a Site Safety Plan is required is when the contractor is ready to pull a permit.
DOB reviews site safety criteria based on characteristics including building height, number of stories, footprint and the proposed work. Where site safety applies, the required Site Safety Plan must be approved before the applicable permit can be issued. (New York City Government)
That is why SSP requirements should ideally be evaluated during the early logistics and filing stages.
It gives the project team time to coordinate:
- Means and methods
- Construction sequencing
- Site protection
- Equipment
- Adjoining property conditions
- DOT requirements
- Egress
- Temporary operations
Before those decisions begin affecting construction.
The Bottom Line
The question should not simply be:
“Is the building over 75 feet?”
The better question is:
“Based on the building characteristics and the actual scope of work, does BC 3310 apply to this project?”
That small distinction can prevent filing delays, redesign and last-minute coordination once construction is ready to begin.
At Canonvex, we review the building characteristics, construction scope and proposed site logistics early in the process to help project teams determine Site Safety Plan requirements and develop plans that reflect how the project will actually be built.
Plan the logistics early. Build safer later.
1 comment
Another nice article. Well done Wilma