Firm Overview

At York Howell & Guymon, we recognize that we live in a complex, complicated world. Long gone are the days of generalists. Individuals, families, and businesses need professionals who concentrate on specific areas and who stay on the cutting edge in an ever-changing landscape. York Howell & Guymon is a boutique law firm focused in six key areas:
1. - Comprehensive Estate Planning
2. - Real Estate Solutions
3. - Practical Asset Protection
4. - Sophisticated Business Structuring
5. - Effective Tax Planning
6. - Impactful Charitable Giving

Main Office

Main Office
10610 South Jordan Gateway
Suite 200
South Jordan UT 84095


(801) 527-1040


(801) 527-1000


Office Information

Estate Planning

A comprehensive estate plan can be one of the greatest gifts you can give to your family. It can also ensure that your wishes are effectuated and help to avoid unnecessary conflicts and burdensome taxes.

A comprehensive estate plan needs to effectively address four critical issues:

If something happens to you, who do you want making medical decisions for you? If you were to die, who do you want to raise your minor children? Who do you want to manage money for them until they are old enough, and when is old enough? And, most importantly, do you have the flexibility to update and change your planning as life events change?

Tax Planning
Without effective tax planning, it is difficult if not impossible to effectively transfer wealth multi-generationally. From very basic planning to the most sophisticated, York Howell & Guymon focuses on eliminating or reducing potential transfer taxes to the maximum extent possible.

Asset Protection
Lawsuits, divorces, bankruptcies, and bad business deals can also have a devastating impact on the transfer of wealth. In fact, it is because of the impact of taxes and outside attacks that most family wealth does not pass beyond the third generation. At York Howell & Guymon, we always factor in appropriate and effective asset protection in any wealth transfer plan.

Maintaining Privacy
Probate is the court-supervised process of maintaining privacy. To the greatest extent possible, we try and avoid the time and expense of probate and we also try and avoid the public nature of the probate process. We design estate plans that keep you from having to file a public list of your family, their addresses, and a description of the type and value of your assets.



What are your firm's strengths and style?

At York Howell & Guymon, our sole focus and objective is to provide the best estate, tax, business and asset protection planning in the Intermountain West. In order to accomplish that, we set a high standard for every attorney who works at our firm.

Stephen Mayfield

York Howell & Guymon

Stephen J. Mayfield is a Partner at York Howell & Guymon, advising businesses and individuals on various tax issues in the context of corporate transactions, emerging entities, and estate plans. He represents clients regarding mergers and acquisitions, leases, non-disclosure agreements, non-compete agreements, purchase and buy-sell agreements.

Stephen assists entrepreneurs form limited liability companies and corporations, and advises medical professionals with practice administration, compliance, and restructuring. Stephen also represent clients before the Internal Revenue Service.

Stephen is licensed in Utah and in Nevada, where he practiced at a prominent Las Vegas law firm for five years. He continues to represent Nevada clients and others who seek to utilize Nevada’s favorable asset protection laws and devices.

Stephen lives in American Fork with his wife and three children, who are members of the nationally recognized American Fork High School Marching Band. Having lived in Japan for three years, including one year studying on scholarship at the University of Shinshu in Nagano, Stephen speaks Japanese fluently. He is also an avid cyclist and skier.

Areas of Practice:
o Estate, Asset, and Tax Planning
o Corporate Law and Governance
o Probate Administration and Litigation
o Trust Administration and Litigation
o Elder Law and Guardianship
o Federal Tax Law

Memberships and Positions:
o Utah State Bar
o Nevada State Bar
o Salt Lake Estate Planning Council
o Legislative Liaison Committee, Utah State Bar, 2016 – Present
o The Food & Care Coalition, Board Member, 2014 – Present


Bar Number: 10138
Nevada, 2006

Bar Number: 10323
Utah, 2004


University of Utah
BA, 2000

Chicago-Kent College of Law (Illinois Institute of Technology)
JD, 2004

Denver University
LL.M, 2005

* Nolo has confirmed that every member attorney has a valid license and is in good standing with the state agency that licenses lawyers. Any past disbarments and suspensions (with possible exceptions for minor violations or nonpayment of dues, in our discretion) will be indicated accordingly in the badge. Member attorneys are required to notify Nolo immediately if they become the subject of any disciplinary action by any state licensing agency.