INSPECTIONS SERVICES
Audax is a DOB-approved Special Inspection Agency and accredited testing lab — providing TR1, TR4, TR8, TR2, and TR3 services for contractors, developers, and engineers across all 5 boroughs.
WHAT WE DO
Every service your project requires — performed by DOB-approved inspectors and accredited lab technicians.
TR1 / TR8
DOB-required inspections performed by approved inspectors — keeping your project on schedule and compliant at every phase.
TR2 / TR3
A2LA-accredited materials testing with certified reports your engineer can rely on and defend.
Subsurface investigation and geotechnical reporting for NYC DOB permit applications.
Total station surveys tracking structural movement during excavation and demolition.
Real-time vibration analysis protecting adjacent structures and maintaining DOB compliance.
Underground condition assessment for design planning and risk mitigation.
TR4 · GEOTECHNICAL
Audax operates as an A2LA-accredited laboratory registered with the NYC Department of Buildings for field sampling and certification of subsurface conditions. Our team performs site investigations and produces geotechnical reports with construction-focused recommendations.
TR4
DOB Code
A2LA
Accredited
All 5
Boroughs
48hr
Report Turnaround
TR1 · TR8 · SPECIAL INSPECTIONS
Audax NY is an A2LA-accredited Type A / Class I Special Inspection Body and a registered Special Inspection Agency with the NYC DOB. Our TR1 and TR8 special inspection and construction monitoring services keep every project aligned with required approvals.
Audax operates under SPCASE 17394 — a grouping accreditation combining individual competencies within a defined scope of inspection services.
TR1 / TR8
DOB Codes
Type A
Class I SIA
SPCASE
17394
DOB
Approved
TR2 · TR3 · MATERIALS TESTING
Audax NY's A2LA-accredited Materials Testing Laboratory is registered with the NYC DOB for field sampling and verification of concrete and aggregate materials. Testing follows strict QC procedures and NYC requirements.
TR2 / TR3
DOB Codes
A2LA
Accredited Lab
NYC DOB
Registered
24hr
Cylinder Results
WHY AUDAX
When your project is on the line, you need an inspection partner with the credentials, the staff, and the systems to deliver — every time.
✓
Registered Special Inspection Agency with the NYC Department of Buildings — TR1, TR4, TR8 approved.
⚗
Internationally accredited materials testing laboratory meeting ISO/IEC 17025 standards for concrete and aggregates.
⚡
Field teams available for rapid deployment across all 5 boroughs — including time-sensitive and emergency scopes.
📋
Certified reports and DOB-ready documentation packages that hold up with regulators, engineers, and in court.
READY TO START?
