Stephen C. VanderBloemen, CPA, CFF - Partner

John P. VanderBloemen, CPA - Partner

Jonathan E. Hilgendorf, CPA – Partner

Jack E. De Young, CPA - Professional Advisor

Gilbert M. Hietpas, CPA - Partner

Stephen C. VanderBloemen, CPA, CFF
Managing Member

262-574-0374 phone
262-574-0369 fax

Stephen C. VanderBloemen, managing partner, has over 43 years of experience in public accounting including 41 years serving primary construction contractors; construction suppliers, credit grantors to contractors (sureties and bankers); and construction industry associations. As managing member, he is responsible for the overall services provided to clients including system planning, survey, design, selection, conversion and installation , computer consulting and continued system support, evaluation of project estimating, contract evaluation, management and control, claim analysis, preparation and review, litigation support, including testimony as an expert witness, continuity and business planning, general business consulting, business valuations, development and present training programs, audited and reviewed financial statements, long-range planning, tax planning and coordination of tax services.


  • Concordia College (Formerly Spencerian College) - Bachelor of Business Administration - Accounting 1969
  • Marquette University - Graduate credits and accounting courses
  • Continuing professional education - 80 to 100 hours per year. Training courses are related to professional updates, construction industry education and general continuing education.
  • Milwaukee School of Engineering - Fifth Semester. Construction Management Degree Program
  • Annual Training - Public accounting updates and reporting, industry updates and service line developments

Published Articles

  • Journal of Construction Accounting and Taxation
  • Insurance Institute of America contributor to chapter on Financial Statement Analysis
  • Construction Financial Management Association, contributing author of chapter - “Change Orders, Extras, Back Charges and Claims”
  • Associated General Contractors of America, Inc., contributing author to multiple construction estimating articles and construction training videos and workbooks
  • Contributor to multiple firm’s training manuals, training programs and construction related articles affecting financial, tax, claims, business continuity, planning, reporting systems and other business items
  • Co-author of The AGC of America’s “Construction Estimating & Bidding – Theory, Principles, Process” text book

Professional Activities

  • Instructor - Associated General Contractors of America Advanced Management Program
  • AGC of Milwaukee
  • AGC of Wisconsin
  • Member of various AGC national and local committees
  • Featured speaker for the State Chapter
  • Speaker for the annual Winter Workshop
  • Speaker for other financial and tax programs
  • Featured speaker at the Associated General Contractors of America - 1981, 1999 and 2004

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John P. VanderBloemen, CPA

262-574-0374 phone
262-574-0369 fax
414-840-9400 cell

John P. VanderBloemen, partner, has over 24 years of experience including twelve years in public accounting servicing privately-owned construction and manufacturing companies and eight years as a CFO / controller / accountant with two privately-held construction companies.

As partner, his responsibilities include planning, supervising and reviewing staff work on attestation engagements which include audits, reviews and compilations. He is also responsible for tax compliance, tax planning and consulting on IRS and state tax audits; claims and litigation support; and as an outside financial advisor for privately-owned companies.

As CFO and Controller, his responsibilities included monthly preparation of financial statements; preparation of budgets and forecasts; organizing and providing information to outside auditors and ESOP valuation; all human resource functions; working with the insurance and surety providers with annual renewals and negotiating pricing; assisting project managers with their monthly costs to complete estimates; and supervising and guiding the accounting staff of the company.


  • BBA – Accounting, University of Wisconsin, 1992
  • Continuing Professional Education - 50 to 60 hours per year
  • CPA since 1995

Professional Affiliations

  • Wisconsin Institute of Certified Public Accountants
  • American Institute of Certified Public Accountants
  • Construction Financial Management Association (Milwaukee Chapter) - Board President
  • Surety Association of Wisconsin

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Jonathan E. Hilgendorf, CPA

262-574-0374 phone
262-574-0369 fax

Jonathan E. Hilgendorf, partner, has over 17 years of experience with eight years in public accounting serving privately-owned construction companies and five years as a controller for a privately-held company.

As partner, he is responsible for planning, managing and supervision of professional staff in the performance of audits, reviews, compilations and tax reporting/compliance services. He also is responsible for assisting clients in income, franchise, sales and use tax and property tax audits by Federal, State and local taxing authorities, consulting and contract compliance.

He has also been involved in many claim analysis, preparation, review and litigation support cases including a large contractor in a 1,000 + hour litigation engagement. Litigation support included assisting counsel at trial with document maintenance and assistance during examination of witnesses and depositions. Claim analysis projects for general contractors, specialty contractors, construction material suppliers, owners or owner’s representatives, including report drafting.


  • Bachelor of Science in Business Administration - Majors in Accounting and Economics; emphasis on Finance
  • Marquette University, May 1997
  • Continuing Professional Education - 40 to 50 hours per year

Professional Affiliations

  • Wisconsin Institute of Certified Public Accountants
  • American Institute of Certified Public Accountants
  • Associated General Contractors, National, Wisconsin and Milwaukee chapters
  • Lake County Contractors Association
  • Wisconsin Underground Contractors Association
  • Wisconsin Transportation Builders Association
  • Construction Financial Management Association
  • Surety Association
  • American Institute of Constructors
  • American Subcontractors Association

Professional Presentations

  • Speaker at CFMA annual accounting and tax updates - 2008 and 2009

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Jack E. De Young, CPA
Professional Advisor
262-574-0374 phone
262-574-0369 fax

Jack De Young has over 45 years experience in sales and use taxes in the private and public sector. Prior to establishing his own consulting business, Jack was a tax manager for a large regional CPA firm. He provides a variety of services to clients, including audit and appeal support, training, identifying exemptions not being utilized, filing claims for refund, compliance and nexus reviews, research, and obtaining rulings from state revenue agencies. Of the 40 plus years of experience, 36 years were spent with the Wisconsin Department of Revenue as an auditor, criminal investigator, director of appeals, and assistant administrator.

Jack is a CPA and a member of the Wisconsin Institute of Certified Public Accountants and the Wisconsin State Taxation Committee. He is a graduate of the University of Wisconsin in Madison. Jack was a recipient of the “Outstanding Tax Professional” award from Corporate Report Wisconsin magazine and the University of Wisconsin-Milwaukee Tax Association. He has given speeches at over 200 seminars and meetings throughout Wisconsin and other states on topics such as: Sales Tax Treatment of Contractors, Manufacturers and Computer Software; How to Avoid Costly Audits; Tax Updates; New Laws; and Sales Tax.

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Gilbert M. Hietpas, CPA

920-387-3356 phone
920-387-3083 fax

Gilbert (Gib) M. Hietpas, partner, began his public accounting career in 1972 in Monroe, Michigan, at a CPA firm that focused primarily in governmental and non-profit auditing and income tax preparation. Gib was the first Finance Director hired by Fond du Lac County in 1976 where he was responsible for coordinating and consolidating the accounting affairs of the County. Gib has been in private practice for more than 32 years and established offices in Fond du Lac, Mayville, and Juneau where he continues to specialize in the preparation of business financial statements, the review of auditing of governmental and non-profit agencies, and the preparation of individual, partnership, corporate, trust, and farm income tax returns. Gib also provides tax audit representation and general business consulting including financial planning, budget and forecasting as well as preparation of payroll and accounts payable checks.


  • Appleton Vocational School - Associates Degree in Accounting, 1966
  • Lake Superior State University (formerly Lake Superior State College) - Bachelor of Business Administration-Accounting, 1972
  • Continuing Professional Education - 80 to 100 hours per year related to professional updates in public accounting and reporting, tax preparation, and auditing as well as general continuing education

Professional Activities and Memberships

  • Member, American Institute of Certified Public Accountants
  • Member, Wisconsin Institute of Certified Public Accountants
  • Member, Michigan Association of Certified Public Accountants
  • Call Staff Instructor (accounting, income tax preparation), Waupun Correctional Institution
  • United States Air Force Veteran

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