Brief Biography of Principal Consultants

Jody L. Hann, a Principal of ITA/Vinco Tax Services, LLC since 1996. Mr. Hann has worked in the area of state and local tax since 1988. Mr. Hann’s professional previous experience includes working with the firm Valuation and Assessment Consultants, Inc. as a Consultant. In addition, Mr. Hann was a Consultant with DuCharme, McMillen and Associates. Mr. Hann has been responsible for the management of a variety of state and local tax projects on a national basis. He has been involved in Property and Sales tax assignments for such diverse companies and organizations as TRW, Pioneer Electronics, Sony Entertainment, Delta Airlines, Coast Federal Bank, KB Home, Yang Ming Shipping., Inc., Aviation Facilities, Co., the Riviera Country Club, Crowley Marine, Princess Cruises, LTD. and IATA. Mr. Hann has worked on and managed projects in 30 states. Mr. Hann attended the University of Nevada at Reno. Mr. Hann is a current member of the Los Angeles County Assessor’s Citizens Advisory Committee.

Cassandra Suarez, a Principal of ITA/Vinco Tax Services, LLC since 2000. Ms. Suarez is an experienced professional in the area of Builder/Developer Services specializing in Residential & Commercial Development Projects. In her role as a consultant for ITA/ Vinco Tax Services, LLC she has been responsible for new construction projects, assessment appeals for residential and commercial projects that have resulted in substantial reductions in property taxes, direct assessments and exemptions in California, Arizona, and Nevada. Ms. Suarez has supervised and worked directly on property tax assignments for companies including Sony Entertainment, CFHS Holdings, Inc., KB Homes, Princess Cruises, LTD., Reliable Properties, and Pulte/Del Webb. Ms Suarez formerly worked in the Real Estate Industry from 1997 to 2000, a licensed Realtor. Ms. Suarez attended Loyola Marymount University. Professional education includes Principles of Appraisal, Income Capitalization, and Appraisal Procedures from the National Appraisal Institute. A current member of the Los Angeles County Assessor’s Developers Advisory Committee.

Emilio Suarez, a Consultant of Vinco Tax Services, LLC since 2006. Mr. Suarez has over 6 years of Mortgage & Financial services experience. Mr. Suarez is a graduate of California State University, Northridge. He is responsible for coordinating all licensing matters with particular reference to city/county legislation guidance and standards. In addition he also negotiated complex agreements with third party providers. In his role as consultant for Vinco Tax Services, LLC, he has negotiated settlements in all types of residential, commercial and vacant land properties using comparable sales/income approach methodology to derive a property’s valuation. Mr. Suarez is certified by the Institute of Property Taxation’s Property Tax School. He is currently responsible for assessment appeals for residential and commercial projects in California, Nevada and Arizona.

Roger G. Walls, A consultant of Vinco Tax Services, LLC with over 22 years experience with the Los Angeles county Assessor’s office. He was responsible for management and supervision of 15 appraisal staff members reviewing qualified claims by non-profit 501 C (3) Corporations for property tax exemptions. Previous assignment from was to be in charge of case management for property tax appeals before the Assessment Appeals Boards. Duties included a review of appraisal information, conferring with taxpayers and agent representatives, review cases and merits of appeal, manage the Assessor’s case presentation and act as Attorney-In-Fact for the Assessor. Mr. Walls receieved Specialized Training from the Appraisal Institute, University of California, Los Angeles and the Los Angeles County Bar Association.

Edward Mulflur joined Vinco Tax Services, LLC in 2008 after a twenty-three year career as a commercial real estate broker with Marcus & Millichap and Remax Commercial. He analyzed, underwrote, negotiated and sold apartments, office, retail, industrial and medical for institutions, individuals, partnerships and corporations. His institutional clients included; GMAC Commercial Mortgage, Beale Bank, Fidelity Federal Bank, and American Savings Bank. The diversity of product type as well as insight from the market side of transactions makes him a valued member of the Vinco Tax Services, LLC team. Ed received a B.A for the University of Maine in 1974 and M.A from the University of Oregon in 1976.

Christopher (Chris) B. Schwanitz, as commercial Tax Agent with Vinco Tax Services, LLC is responsible for valuation of commercial and residential projects. Mr. Schwanitz has extensive experience in income analyses, equity and loan structures, cash flow projections and asset valuations. Prior to joining Vinco Tax Services, LLC LLC, Mr. Schwanitz was part of the asset management team for Genton Barth Real Estate Group, a real estate development and investment firm located in Los Angeles with a portfolio of commercial real estate valued in excess of $500 million. Recent assessment appeals cases including adaptive re-use projects, hotels, and commercial office projects have generated tax savings in excess of $500,000. Clients include Cox Castle & Nicholson LLP, Genton Property Group LLC, Alcion Ventures LP, AIG, Jade Enterprises and Great American Properties (Nevada). Mr. Schwanitz earned a BS in mathematics and economics from University of California, Los Angeles.

Steve R. Gill, Mr. Gill is the former National Director of Property Tax Services for Ernst & Young’s State and Local Tax Practice, and specializes in property tax matters throughout the United States. Mr. Gill has more than 15 years of experience handling property tax appeals related to the valuation of real and personal property for industrial property, hotels, office buildings, multi-family units, retail operations, health care facilities and other commercial property. He is also experienced in the area of state tax exemptions for qualifying property.

Alan Bowlby is the president of D. Alan Bowlby & Associates, Inc. with 24 years experience in real estate and personal property. He holds a Charter Membership and a Senior Member Certification from the Texas Association of Property Tax Professionals. He is registered as a Senior Property Tax Consultant for the State of Texas and as a Tax Agent for the State of Arizona. He currently is a member in good standing with Texas Association of Assessing Officers, International Association of Assessing Officers, and Institute of Property Taxation. Mr. Bowlby has represented many property owners and all property types throughout the Southwest portions of the Midwest and portions of the Southeast. His representation has been responsible for annual tax savings totaling millions of dollars.

Dennis W. Hetler is the founder of the law firm Hetler & Associates, LLC of Chicago, Illinois. This firm specializes in property taxation, federal, state, and local taxation, real property, commercial, probate, and local government law. Mr. Hetler’s practice concentrates on real property taxation involving Illinois properties, with the majority of properties situated in Cook County, Illinois. Mr. Hetler has filed appeals before the office of the Cook County Assessor, the Board of Appeals of Cook County, Board of Review, the Illinois Property Tax Appeal Board and the Circuit Court of Cook County. Dennis is a graduate of Loyola University (J.D. Cum Laude, 1996), and Northwestern University (B.S., 1962). He was admitted to the Illinois Bard in 1966, the U.S. District Court and the Northern District of Illinois in 1967, and the U.S. Tax Court in 1970. Mr. Hetler is a member of the Chicago and Illinois State Bar Associations, and the Institute of Property Taxation.

Dennis C. Ingles, CMI, serves as the Managing Director of Property Tax Services for Corporate Valuation Advisors, Inc. Mr. Ingles began his career in 1970 with the Union Oil Company. In 1975, Mr. Ingles joined Gould Inc. as a Senior Tax Analyst. In 1977, he was promoted to Manager of Property Taxes. In 1980, he joined Realty Appraisals Company/Strategis as Manager of Property and Sales Taxes. In 1989, Mr. Ingles left Strategis in order to form the Property Tax Group of Corporate Valuation Advisors, Inc. During is 20 years in the valuation and tax professions; Mr. Ingles has participated in a wide range of property tax engagements. He has served various companies involved in broadcasting, publishing, food processing, transportation equipment, electrical and electronic equipment, textile products and hotels. Mr. Ingles holds a Bachelor of Science degree from Ball State University. He is an accredited member of the Institute of Property Taxation.

Richard Janis, Over 25 years of experience in multistate, multidiscipline tax planning, consulting and government relations including 14 years in the airline industry. Former partner and National Tax Industry Leader for KPMG’s Transportation Practice where he managed the delivery of tax services to transportation clients. Served as Tax Counsel for the Air Transport Association (ATA) where he was responsible for international, federal, state and local tax issues that impacted the nations airlines. Richard represented the airline industry before the IRS on ticket tax and other excise tax issues.
Mr. Janis Served on the Board of the California Taxpayers Association (¡§Cal-Tax)and on airline industry advisory panels at Revenue Canada and HM Customs & Excise on issues involving the imposition of taxes, fees and charges on the sale of airline tickets. Published in Supply Chain Management Review Magazine (Winter 2000), ¡§Taxes: The Hidden Supply Chain Cost. He has presented seminar topics to numerous organizations including ATA, The Tax Foundation, IATA, National Business Aircraft Association, Regional Airline Association, Council of Logistics Management, Maritime Tax Society, National Accounting and Finance Council of the American Trucking Associations and ICAO.
Richard Janis graduated at Northwestern University (BA-Economics, 1973); he also attended the University School Of Law (JD, 1976) and New York University School Of Law (LL.M.-Taxation, 1977).

Robert Vivenzio is the Principal and founder of Extax Consulting Group LLC, a full service regional state and local tax-consulting firm with headquarters in Lynnfield, Massachusetts. In that position, he has responsibility for the strategic direction and marketing of the firm.
Prior to founding Extax in 1999, Robert spent 9 years with Strategis Asset Valuation & Management in Boston, where he was a Senior Vice President and the New England Regional Manager. Prior to that, Robert opened the Boston and Ontario, Canada offices for DuCharme, McMillen & Associates where he worked for 6 years. Robert has also worked in a variety of other industries including computer graphics and office automation. His past roles include sales and marketing for such companies as Xerox, General Electric and Genigraphics.


  • MILLENIUM TAX SERVICES, Rockaway, New Jersey
  • D. ALAN BOWLBY & ASSOCIATES, Dallas, Texas
  • CONSULTUS VALUATION, Denver, Colorado
  • J. R. TIMBO & ASSOCIATES, Philadelphia, Pennsylvania
  • PROPERTY TAX SOLUTIONS, Los Angeles, California
  • PORTO LEONE CONSULTING, Philadelphia, Pennsylvania
  • TRANSPORT TAX.COM, Leesburg, Virginia


  • BEWLEY, LASSLEBEN & MILLER LLP, Whittier, California
  • COX, CASTLE & NICHOLSON, Los Angeles, California


  • A.E.G
  • AIG Insurance
  • A.E.G
  • AIG Insurance
  • Air France
  • Air New Zealand
  • America West Airlines
  • Angeles National Golf Club
  • Aviation Facilities Company
  • Bridgestone/Firestone
  • British Airways
  • Brookfield/Playa Vista
  • Carnival Cruise Lines
  • China Airlines
  • Culver Studios
  • EVOQ Properties
  • Ferragamo International
  • First Beverage Capital, LLC
  • General Electric
  • Golden West Properties
  • Guess ?, Inc.
  • Hawaiian Airlines
  • Host Marriott
  • Ikea
  • KB Home
  • Korean Airlines
  • Lahontan Country Club
  • Lionsgate Entertainment
  • The Los Angeles Forum
  • Lufthansa German Airlines
  • Morlin Management
  • NBC
  • Northwest Airlines
  • Pacific Ocean Management, LLC
  • Pulte Home Corp.
  • Qantas Airways
  • R. W. Selby
  • Reliable Properties
  • Rexford Industrial
  • Ritz Carlton Hotels
  • Riviera Country Club
  • Sansome Pacific Properties
  • Sony Music
  • Sony Pictures Studios
  • Sony Electronics
  • Stanford Mart
  • Stanley Works
  • Staples Center Arena
  • Toyota
  • Trapac, Inc
  • Tribune Entertainment
  • Williams-Sonoma, Inc.
  • Yusen Terminals