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. In 1992, HdL Coren & Cone (HdLCC) was created to oversee property tax services. HdL Software was formed in 1996 to provide software and services for business license and lodging taxes. Today, the HdL Companies provide a full assortment of public agency revenue management services, including sales tax, property tax, lodging tax, business license & tax, cannabis consulting, economic development and more.


  • 1983

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

  • 1985

    Company operations are shut down for 6 months when the California State Board of Equalization determines that sales and use tax records cannot be given to an independent contractor hired by a local government agency. Through HdL’s lobbying efforts and support, Assembly Bill No. 1611 is passed allowing for independent verification of the State Board of Equalization’s sales tax allocations.

  • 1987

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

  • 1992

    HdL Coren & Cone is established to provide property and documentary transfer tax services, and fiscal consulting to redevelopment agencies.

  • 1996

    HdL Software is established to provide solutions for business license, transient occupancy tax, and other locally administered revenue programs.

  • 2013

    HdL is a vibrant, growing company of 60 employees serving over 355 local government agencies.

  • 2017

    HdL expands to Texas, acquiring Sales Tax Assurance.

  • 2018

    Outgrowing its current space, HdL moves its corporate headquarters to an expanded office space in Brea, California.

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


With offices in Alabama, California, Colorado, Georgia, and Texas.