For live assistance including TTY callers, dial 311. Some mobile phone users or persons outside the Houston area may need to dial 713.837.0311.

Houston 311 Help & Info

City Functions Index - I

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Function Description Department
Immunizations Immunizations Health and Human Services
Industrial Districts Industrial Districts Mayor's Office
Information Technology 5-Year Plan Information Technology Strategic Plan Information Technology
Inspections Boiler Public Works and Engineering
Inspections Electrical Public Works and Engineering
Inspections Elevator Public Works and Engineering
Inspections Inspections Public Works and Engineering
Inspections Mechanical Public Works and Engineering
Inspections Occupancy Public Works and Engineering
Inspections Plumbing Public Works and Engineering
Inspections Special Public Works and Engineering
Inspections Structural Public Works and Engineering
Internships and Externship Legal Program Internships and Externship Legal Program Legal Department