Our Philosophy
PRACTICE AREAS



Construction Law
Jonathan assists in the negotiation and execution of building contracts, and represent parties in legal disputes over commercial and residential development projects.
Probate
A probate is a legal process in which a will is reviewed to determine whether it is valid and authentic. Probate also refers to the general administering of a deceased person’s will or the estate of a deceased person without a will.
Business Litigation
Business litigation law involves disputes arising out of business and commercial related transactions of a non-criminal nature.
Contract Litigation and Review
It is not uncommon for two parties to read a contract, and thus interpret their respective obligations and responsibilities, differently.
Family Law & Divorce and Child Custody
Divorce procedures start out the same regardless if there are children involved or not. Knowing what to expect can help you prepare.
Jonathan P. McCoy, Esq.
Jonathan was born in Wyoming and grew up in North Carolina, New York, and Wyoming, graduating from the University of Wyoming in 2003 with a bachelor’s degree in political science.
After graduating, Jonathan commissioned as an officer in the United States Air Force and served in Operation Enduring Freedom and Operation Iraqi Freedom during his eight years in the Air Force. He was a Weapons Systems Officer on the B-1B and also served as a liaison to the Army, coordinating air support for ground troops.
Jonathan was honorably separated from the Air Force in October 2011 and graduated from the University of Wyoming College of Law in 2015. As a member of the International Human Rights Clinic, he traveled to Uganda in March 2014 to help a partner organization present a maternal health case before the Ugandan Supreme Court. Jonathan also interned at Costello Porter Law Firm for two summers and joined Costello Porter as an associate attorney in September 2015.
Jonathan has a Masters of Public Administration and is admitted to practice law in the State of South Dakota, the District of South Dakota US District Court, the State of Wyoming and the District of Wyoming US District Court.
When not at the office, Jonathan can be found taking in a baseball game with his family, golfing, or playing with his children.
Boards and Community Service:
Love INC of the Black Hills
- Board of Directors, 2017 to Present
- Officer of the Board, 2020 to Present
Western Dakota Technical Institute Foundation
- Board of Directors, 2019 to present
Pennington County Veterans Treatment Court
- Team Member, Defense attorney, 2019 to present
Other Memberships:
- DRI (Defense Research Institute)
- WTLA (Wyoming Trial Lawyers Association)
- SDDLA (South Dakota Defense Lawyers Association)
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Disclaimer:
The information contained in this website is provided for informational purposes only. It should not be construed as legal advice nor should any visitor to or user of content from this site act or refrain from acting on the basis of any content included in the site without seeking appropriate legal or other professional advice on the particular facts and circumstances at issue from an attorney licensed in your jurisdiction.
Jonathan P. McCoy is an attorney at Costello, Porter, Hill, Heisterkamp, Bushnell & Carpenter, LLP. The content of this website contains general information and may not reflect current legal developments. Jonathan P. McCoy expressly disclaims all liability in respect to actions taken or not taken based on any or all the contents of this website. Visiting or use of this website does not create an attorney-client relationship between you and Jonathan P. McCoy or any attorney at Costello, Porter, Hill, Heisterkamp, Bushnell & Carpenter, LLP, nor is it intended to do so. Some links within the website may lead to other websites, including those operated and maintained by third parties. Jonathan P. McCoy includes these links solely as a convenience to you, and the presence of such a link does not imply a responsibility for the linked site or an endorsement of the linked site, its operator, or its contents.