Certification & Material Acceptance


The Office of Technical Certification and Research (OTCR) oversees technical certifications of approved agencies and entities performing inspections, tests, material approvals, and evaluates new technology that enhances safety, sustainability, and efficiency.

Material Acceptance

Materials are classified and recognized in accordance with section 28-113 of the Administrative Code and the OTCR Rule.

Special Inspections

Special Inspections are conducted during the construction process to verify that work is being done in accordance to approved plans and specifications. Special Inspections must be performed by Special Inspectors on behalf of a Special Inspection Agency.

Approved Agencies

The NYC Construction Codes designate third parties as Approved Agencies to perform tests or inspections of materials and equipment, construction-related activities, and qualification of specified field personnel

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