2018 Champions of Diversity Award
City of Houston Certified Professional Services Contractor of the Year


2016 ACEC Engineering Excellence Award Gold Medal
Project: North Tarrant Express


Patriotic Employer Certificate from the Office of Secretary of Defense Employer Support of the Guard and Reserve


Ranked by Engineering News Record as one of the Top Design Firms in Texas and Louisiana
2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010​


The Houston Business Journal has recognized OTHON in the following rankings:
Top 100 Fastest Growing Companies in Houston in 2017
Top 100 Fastest Growing Companies in Houston in 2011
Top 25 Largest Civil/Structural Engineering Firms in 2004, 2005, 2006
Top 25 Largest Minority-Owned Businesses in 2004, 2005, 2006
Top 100 Small Business in 2005


Recipient of the Houston Airport Systems 2011 MBE Subcontractor Professional Services Award


Ranked by Texas Construction Magazine as one of the Top 100 Engineering Design Firms
2009, 2008, 2007, 2006, 2005


2008 Recipient of the Texas Partnership for Transportation Quality Award
Project: IH 610 W/IH 10 W interchange reconstruction

2007 Texas CEC Engineering Excellence Award Recipient
Project: Texas Woman’s University Institute of Health Sciences

Small Business Leadership Award for Project Management Consulting Services
2003 Project: Houston’s METRO Rail