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Mark Thomas Young

Estate planning Attorney at Valencia, CA

1.0   1 review
  • Licensed for 44 years
    State CA
    Acquired 1979
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Mark

Learn Mark’s areas of practice.

As a partner at Donahoe & Young LLP, Santa Clarita attorney Mark T. Young offers legal services for bankruptcy, business law, estate planning and civil litigation issues. He has more than 35 years of experience in the legal community. Mr. Young received his undergraduate degree from the University of California Los Angeles and his Juris Doctor from the University of California Davis School of Law. He is AV Preeminent® rated by Martindale-Hubbell®. In addition to his legal work, he serves on the board of directors of the Santa Clarita Community Development Corporation. Contact his firm today for a complimentary consultation.

Photos and videos

The Donahoe & Young office & team:
Standing (attorneys):  Kristen L. Chic, Timothy C. Donahoe, Mark T. Young, Taylor F. Williams, Kristen N. Gozawa
Seated (assistants):  Sherry Young, Kristy Ballew


Donahoe & Young LLP
25152 Springfield Court
Suite 345
Valencia, CA, 91355

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1.0 / 5.0
  1 customer review
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1 Star
Posted by Michelle | March 4, 2024
This review is from a person who hired this attorney.
| Hired Attorney
DYW the Bad Faith Law Firm
Attorneys Mark Young, Taylor F. Williams and Craig Aird of the law firm Donahoe, Young and Williams, "DYW" herein, were hired to stop all proceedings and remove a corrupt care provider, Sandra Quiroz, found also to be a convicted felon, who had unduly influenced my mother to change her Trust and designate Quiroz in my position as 1st Successor Trustee and Primary Beneficiary. I paid over $13,000 to DYW. I was asked to bring copies of evidence and provide the remaining by email as to which DYW charged over $9,000 to read, download, print and file, then do nothing with the research and info I provided; something they should have done. So basically, I paid twice and to do their job then acquiesce and not file one document on my behalf. I requested DYW to file a TRO on the care giver and record Lis Pendens on all Trust and Estate properties so assets would not be easily sold. DYW did nothing, absolutely nothing I requested. The judge asked DYW to obtain a 2017 report on the care giver. 6 continuances later, DYW still had not obtained the report. When I began calling DYW out for their inactions, DYW displaced blame on me and withdrew from the case. Left in pro per status without hardly any knowledge of what needed to be done, the judge dismissed my case. It took me 20 minutes to obtain the report DYW was requested to obtain. DYW is still holding $2500 for a retainer fee for Mark Young to appear on a related matter. Attorney Young never substituted in on the related Civil matter, has never acknowledged my requests for a refund and still remains in possession of funds he never earned, going on close to 2 years. This law firm did nothing for $13,000, has no conscience, zero ethics and will continuously lie to you saying how hard they are working for you asking for more money each time. When you find they have done nothing they displace blame on you and file a MTBRC, Motion to be Relieved as Counsel leaving a client in a vulnerable status with a pending trial while they fail to provide any status nor case file. DYW bailed from the case with every penny I paid them, then had the audacity to place a lien on the matter hoping to get more of unearned funds. Run from this law firm and spread the word. They have injured me and my family from recovering what is rightfully ours and they will do the same to you.
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  • Free Consultation 15 minutes
Payment methods
Cash, Check, Credit Card


AVVO RATING 8.9 (Excellent)

Work Experience

  • Partner
  • Donahoe & Young LLP
  • 1999 - Present
  • Attorney
  • Law Offices of Mark T. Young
  • 1996 - 1999
  • Partner
  • Mayer, Glassman & Gaines
  • 1986 - 1996
  • Associate
  • Mayer & Glassman
  • 1981 - 1986
  • Associate
  • Layman, Hanson, Jones & Voss
  • 1979 - 1981
View all work experience


  • University of California - Davis
  • JD - Juris Doctor
  • 1979
  • University of California - Los Angeles
  • BA - Bachelor of Arts
  • 1976

Sample of Legal Cases

  • In re Irias (2:11-bk-41730-RK)
  • Chapter 11 Plan confirmed, final decree entered
  • Mitelhaus v. Ramey (515 B.R. 777)
  • Judgment for plaintiff: $423,000, including attorneys' fees
  • Diamond v. Trawick (497 B.R. 572)
  • Debtor's position that trust assets were not properrty of estate upheld
View all legal cases


  • Santa Clarita Valley Bar Association
  • Member
  • 2007 - Present
  • United States Supreme Court Bar
  • Admitted to practice
  • 1997 - Present
  • Bridge to Home
  • Board Member
  • 1996 - Present
  • Los Angeles County Bar Association
  • Member
  • 1995 - Present
  • United States District Court for the District of Arizona
  • Admitted to Practice
  • 1987 - Present
  • United States Court of Appeals For the Ninth Circuit
  • Admitted to Practice
  • 1985 - Present
  • United States District Court for the Eastern District of California
  • Admitted to Practice
  • 1985 - Present
  • United States District Court for the Northern District of California
  • Admitted to Practice
  • 1982 - Present
  • United States District Court for the Southern District of California
  • Admitted to Practice
  • 1982 - Present
  • United States District Court for the Central District of California
  • Admitted to Practice
  • 1981 - Present
  • State Bar of California
  • Admitted to Practice
  • 1979 - Present
  • Santa Clarita Valley Bar Association
  • Board Member
  • 2010 - 2012
View all associations

Languages Spoken

  • English

Honors and Awards

  • AV Preeminent Rated
  • Martindale-Hubbell
  • 2018
  • Honors Moot Court Board
  • U.C. Davis School of Law
  • 1978

Speaking Engagements

  • Agents Seminar
  • Bankruptcy Options for Owners of Distressed Property
  • 2011

Attorney endorsements

Received (6)
Given (6)
Endorse Mark
Litigation Attorney | Jul 20
Relationship: Worked for lawyer
"Mark is extremely intelligent, and has a breath of knowledge that benefits all of his clients. He also knows how to strategize efficiently; and is aggressive yet fair. His clientele base consists of many friends and family of past clients -- whose source of referrals are a testament to his practice. I endorse Mr. Young as an excellent attorney, and a well respected member of the Santa Clarita community."
Litigation Attorney | Jul 12
Relationship: Worked for lawyer
"I endorse this lawyer. Mark is extremely knowledgeable in all areas of his practice. He is well-known and highly respected in the community. There is no better attorney in the area when it comes to the winning combination of competence and service."
Bankruptcy and debt Attorney | Jul 02
Relationship: Co-worker
"Mark is an experienced and compassionate attorney. He is fair, honest and works diligently to achieve successful results for his clients. I absolutely endorse Mark Young."
Unknown Attorney | May 15
Relationship: Other
"I endorse this lawyer. Mark is a very caring and experienced attorney."
Bankruptcy and debt Attorney | May 15
Relationship: Friend
"Mark Young is a hard working attorney who gets it done for his clients and strives to make a difference."
Unknown Attorney | Dec 18
Relationship: Other
"I am very impressed with Mark Young and his credentials. I endorse this attorney."
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Valencia Estate planning Lawyer Mark Thomas Young
Mark Thomas Young
Estate planning Attorney
Valencia, CA
Licensed for 44 years
Free Consultation