Question 1

What are Special Inspections in NYC?

Accepted Answer

Special inspections in NYC are mandatory, third-party construction oversight services required by the NYC Building Code (Chapter 17) for critical structural components. A Registered Special Inspection Agency monitors work such as structural steel welding, concrete placement, masonry construction, and post-installed anchors to verify compliance with approved drawings and code requirements.

Question 2

Who can perform Special Inspections in New York?

Accepted Answer

Special inspections in New York must be performed by qualified inspectors employed by a Registered Special Inspection Agency that is approved by the NYC Department of Buildings. The agency must meet accreditation standards including ISO/IEC 17020 and ASTM E329, and inspectors must hold relevant certifications for their inspection disciplines.

Question 3

Are Special Inspections required for NYC building permits?

Accepted Answer

Yes. When a project involves work governed by Chapter 17 of the NYC Building Code—such as structural steel, concrete, masonry, or post-installed anchors—the DOB requires a TR1 form designating a Registered Special Inspection Agency before construction can proceed. Special inspections must be completed and signed off for final project closeout.

Question 4

What is a TR1 inspection form?

Accepted Answer

The TR1 is an NYC Department of Buildings form that designates the Registered Special Inspection Agency responsible for performing special inspections on a project. It lists all required inspection categories, the designated agency, and must be filed before construction begins. Upon project completion, the agency signs off on the TR1 to confirm all required inspections were satisfactorily performed.

Question 5

How do Special Inspections affect project signoff in NYC?

Accepted Answer

Special inspections directly affect project signoff because the DOB will not issue a Letter of Completion or Certificate of Occupancy until all required inspections are completed and the TR1 form is signed off by the Registered Special Inspection Agency. Any open inspection items or deficiencies must be resolved before closeout can proceed.

Question 6

When does the NYC DOB require third-party inspections?

Accepted Answer

The NYC DOB requires third-party special inspections whenever construction involves structural steel erection and welding, concrete placement, masonry construction, post-installed anchors, spray-applied fireproofing, smoke control systems, pile foundations, and other critical building components as defined in NYC Building Code Chapter 17 and referenced standards.

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