The HdL Companies began their legacy of service to public agencies as Hinderliter, de Llamas & Associates in 1983. The company's founder, Robert Hinderliter, a city manager and finance director, developed California's first comprehensive sales tax management program and secured legislation allowing for independent verification of state allocations. Building on that foundation, HdL Companies now partners with local governments nationwide, providing a full assortment of public agency revenue management services including misallocation recovery, tax and fee administration, economic development, indirect cost recovery, local tax software, cannabis compliance, and more.

40 years later, our team of former local government professionals, exclusive data, and tech-enabled resources continue to put cities, counties, and special districts on the path to acheiveing their finanical goals through efficiency, diversified revenue streams, and tailored plans for economic success.

  • 2023

    HdL acquires DataMax and expands national footprint in Kentucky, South Carolina, and West Virginia.

  • 2023

    HdL celebrates 40 years of serving local government agencies.

  • 2021

    HdL partners with eCivis to offer Grant Management solutions.

  • 2018

    HdL acquires PREMA Corp and expands national footprint in Alabama, Colorado, and Georgia.

  • 2017

    HdL acquires Sales Tax Assurance and expands national footprint in Texas.

  • 2007

    HdL becomes an employee-owned company.

  • 1996

    HdL Software is established to provide solutions for locally administered revenue programs.

  • 1992

    HdL Coren & Cone is established to provide property tax solutions.

  • 1987

    Lloyd de Llamas leaves his post as City Manager and becomes 50% stock owner. The company name is changed to Hinderliter, de Llamas & Associates.

  • 1985

    Through HdL's lobbying efforts, CA Assembly Bill No. 1611 is passed, allowing for independent verification of the State's sales tax allocations.

  • 1983

    Robert Hinderliter leaves his post as City Manager and starts Robert Hinderliter & Associates.

Get In Touch

Interested in maximizing your revenues? We’re ready to help. Connect with us to experience the HdL difference.

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Corporate Headquarters
120 S. State College Blvd.
Suite 200
Brea, CA 92821


With offices nationwide.



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