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Houston's Largest Single-Source Provider

Gowan/Garrett, Inc. is one of Houston’s largest single-source providers of premier construction, tenant build-outs, HVAC systems, and mechanical services. As a construction engineering firm proficient in industrial design and construction, our services are enhanced by extensive mechanical engineering capabilities, as well as HVAC, commercial plumbing, and process piping expertise.


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We are Houston’s largest single-source provider of premier construction, tenant build-outs, sheet metal fabrication, HVAC systems, and mechanical services. 

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We are proud to be members of Choice Partners, which offers procurement and contract solutions to meet government purchasing requirements.

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Meet the Team

Froman_120x154.jpgMark Froman, President & CEO, and the entire staff provide complete mechanical and HVAC solutions aimed at practical results and full customer satisfaction.

Meet the rest of our team.



Gowan/Garrett is the largest mechanical and sheet metal contractor in Houston, servicing large commercial and institutional customers throughout the area. 

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City of Houston

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For the city of Houston, we created a portal to manage our work orders. Please click below to sign into the portal.

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