Special and Progress Inspections

Twin Peaks, Inc. is an NYC DOB Class 1 Special Inspections Agency (License No. 000317) for all special inspection categories. Our inspection and testing services are accredited by International Accreditation Services (IAS), an independent accreditation body operating under the International Code Council (ICC).

TPI is accredited by the International Standard Organization for the operation of various inspections under ISO/IEC 17020:2012 Conformity Assessment. As part of this accreditation program, IAS has evaluated and verified the efficacy of our technicians, equipment, and TPI’s written documentation of its quality program, calibration procedures, personnel training, and impartiality.

TPI’s Non-Destructive Testing (NDT) services meet all the requirements of ASTM E543 and are outlined in TPI’s written procedures; they were audited and approved by a certified ASNT NDT Level III professional. All work performed by Twin Peaks, Inc. and its subconsultants will follow these established quality procedures and requirements.

Since 1992, Twin Peaks, Inc. has specialized in special inspections throughout New York City and the tri-state area. Our engineers and project managers have an average of 15-20 years of experience in the field, with concentrations in structural concrete, masonry, steel, geotechnical, SOE, mechanical, energy code, Life Safety Systems, and many more areas. These professionals will work tirelessly to ensure that your construction project is safe and in conformance with the approved plans, specifications, and building codes.

Our Quality Assurance Promise

Special inspections are required to verify the quality of methods and materials used in construction projects. We maintain a high standard of quality for our clients and make the process as smooth and simple as possible.

Our project managers help clarify the Quality Assurance process and help our clients efficiently run the project. TPI monitors compliance at each stage of construction and immediately notifies clients of any issues to enable the swift resolution that is necessary to keep projects on schedule and within the budget.

TPI provides objective verification to ensure its clients’ projects comply with the NY Building Code and with the quality materials and methods specified in their plans. We can fulfill our clients’ needs due to the vast number of qualified inspectors at our company.