We are Alterman

Quality workmanship completed by experienced and dedicated employees has established us as San Antonio's leading electrical contractor. Superior installations, completed on time, provide our clients with lasting results that minimize life cycle costs. Alterman's success can be attributed to the professional attitudes and exceptional skills and expertise of our managers, supervisors, electricians, technicians and support personnel.


With our corporate office located in the City of San Antonio, Alterman maintains a workforce of over 650 employees and has served commercial and industrial clients in San Antonio and surrounding areas in South Texas since 1923.


Today, our capabilities include not only electrical construction and pre-construction management, but also design and installation of voice and data communications systems, video cabling, access controls, security and surveillance systems, electrical service, preventive maintenance and 24-hour emergency service.


Alterman's ability to achieve outstanding results comes from our core strengths:

  • Qualified and dedicated team of licensed electricians and certified technicians
  • Excellent safety record aquired through structured, proactive training programs
  • Experience with diverse commercial and industrial projects
  • Technicial expertise in specialized systems and processes
  • Alliances with knowledgeable and responsive vendors
  • Commitment to continuous improvement practices

Quality Performance Timely Completions Safe Operations Employee Owned Serving San Antonio for over 90 Years

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  • design tech


San Antonio Location:

14703 Jones Maltsberger
San Antonio, TX 78247
O: 210-496-6888
F: 210-496-7349

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Austin Location:

10100 N. Lamar Blvd.
Austin, TX 78753
O: 512-836-3950
F: 512-836-4624

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San Antonio’s leading electrical contractor since 1923.
Online Presence by: Benson Design