A Registered Professional Engineering Firm specializing in the appraisal of complex properties.

For over 45 years HLL&A has provided industrial, mineral, pipeline and utility appraisal services to appraisal districts and taxing authorities throughout Texas. 


We specialize in the appraisal of the following types of properties:

  • Refineries
  • Chemical Plants
  • Chemical Storage Facilities
  • Underground Storage Facilities
  • Power Generation Plants
  • Electric & Gas Utilities
  • Pipeline Systems
  • Oil, Gas and Other Mineral Interests
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HLL&A also represents a number of Cities in the negotiating and handling of their Industrial District Agreements.