List of City-registered Master Plumbers. 

Disclaimer: The inclusion of a plumber or plumbing company on this list does not imply and should not be interpreted as constituting or implying any endorsement, recommendation, sponsorship, support, affiliation, or approval by the City of that plumber or plumbing company or the information on the plumber's or company’s site, nor the products or services they offer.

Last updated: Feb. 23, 2021

List of City-registered Mechanical contractors.

Disclaimer: The inclusion of a mechanical contractor or company on this list does not imply and should not be interpreted as constituting or implying any endorsement, recommendation, sponsorship, support, affiliation, or approval by the City of that mechanical contractor or company, or the information on the mechanical contractor's or company’s site, nor the products or services they offer.

Last updated: Feb. 23, 2021

Last update: 04/01/2024.

List of Registered Independent Energy Technicians.

Updated April 19, 2024

The Commercial Energy Efficiency Certificate shall be posted in accordance with Section C401.3 of the 2021 International Energy Conservation Code. 

Last updated: 03/08/2024

List of approved, permitted private ambulance companies.

List of currently licensed sign contractors with the City of Houston

Last updated:  April 18, 2024

Commissioning statement for the mechanical systems, service water heating systems, and building envelope.

Last updated: February 2024