Williamson and Hayashi, LLC
Attorneys at Law
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David S. (“Dave”) Williamson and William P. (“Bill”) Hayashi each have over 25 years of experience specializing in municipal law.  Our firm was established in early 2008, with a commitment to continue the high standard of legal services to municipalities demonstrated over so many years by Jim Windholz.  

 Some of the firm’s current and past clients include:  

  • City Attorney - City of Golden
  • City Attorney - City of Lafayette
  • City Attorney - City of Federal Heights
  • City Attorney - City of Sheridan
  • Special Counsel, City of Thornton, Sales & Use Tax, Colorado Local Liquor Licensing Authority and Board of Adjustment
  • Special Counsel, Colorado Liquor Licensing Authority, Cities of Westminster, Louisville and Vail
  • Special Counsel, Board of Adjustment, Longmont
  • Special Counsel, Personnel, Commerce City
We pride ourselves on providing professional, personalized service to meet your municipal law needs.  

Our office is in Boulder - west of Foothills Highway - off of Arapahoe Ave. at 38th St., turn north at 38th St.  Our office is in the second building on the right.

1650 38th Street
Ste. 103 W.
Boulder, CO  80301

PHONE (303) 443-3100
FAX (303) 443-7835

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