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I provide legal representation to clients in the following areas:
Estate Planning:
Probate/Elder Law
I have practiced law in the State of Arizona since 1999. I am a member of the Southern Arizona Estate Planning Council, the Probate and Elder Law/Mental Health Sections of the State Bar of Arizona and the American Bar Association, and a member of board of directors for the Arizona Chapter of the National Academy of Elder Law Attorneys.
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Chat withState: Arizona
Acquired: 1998
No misconduct found
310 S. Williams Blvd, Ste. 250, Tucson, AZ, 85711
Showing 1 - 2 of 2 client reviews from Avvo
Posted by Brandon | December 10, 2025 | Hired Attorney
My experience with Brian and his assistant Marilyn during a probate case was extremely frustrating. Brian’s communication was consistently lacking—updates were minimal and I was left in the dark about a sizable error about royalty percentages in my own case. Marilyn, in particular, made the proces...
Posted by Elaine Semonian | September 21, 2017 | Hired Attorney
He was extremely professional and compassionate and explained to me very clearly what I needed to do.
"Brian is one of the most personable attorneys I know. His integrity is unmatched and his diligence is apparent in his work."
Real estate lawyer
Family lawyer
2013 - Present
Partner, West, Longenbaugh, Spanier & Zickerman, P.L.L.C.
2008 - Present
Owner, Law Office of Brian S. Longenbaugh, P.L.C.
2010 - Present
National Academy of Elder Law Attorneys (Arizona chapter)Board of Directors
2008 - Present
State Bar of Arizona, Mental Health and Elder LawMember
2008 - Present
State Bar of Arizona, Sole Practitioner/Small Firm SectionMember
2007 - Present
National Academy of Elder Law Attorneys (Arizona chapter)Member
2007 - Present
Pima County Bar AssociationMember
2007 - Present
State Bar of Arizona, Probate and Trust Law SectionMember
1998 - Present
State Bar of ArizonaMember
1998
JD - Juris Doctor
1994
Bachelor of Arts
English