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Tri-Tech is headquartered in Houston, Texas and services the surrounding counties. Our San Marcos office services The Texas Hill Country, including Austin and San Antonio. Contact us today and we will be happy to answer any questions you may have about our engineering, surveying, and planning services.


10401 Westoffice Drive, Houston, Texas 77042   713.667.0800        713.667.4262


155 Riverwalk Drive, San Marcos, Texas 78666   512.440.0222        512.440.0224