Twin Peaks Inc. is a trusted name in engineering excellence since 1992. Located in the heart of Long Island City, we are a company of over one hundred and twenty professionals meticulously working to ensure that your construction project is safe, stable, and built in conformance with the Approved Designs, Specifications, and the Building Code. Twin Peaks, Inc. is licensed by the NYC Department of Building as both a Special Inspections Agency (SIA) and Concrete Testing Laboratory. TPI’s services are rated as Class 1 by the NYC DOB in each inspection discipline it performs.