General Information

Year founded: 2014
This is the year the firm (or its earliest predecessor entity) was founded.
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Overview

Content is provided by the firm.

Shawn S. Kerendian founded Keystone in 2014 to fill a specific and somewhat ambitious niche — to create a boutique practice focused solely on probate litigation and administration, and provide services to this underserved market. Creating Keystone was not just a passion for Shawn; it was also a strategic move. This segment of society has more wealth and is passing down more assets than previous generations.

Rather than expanding to estate planning and related areas of law, Shawn kept Keystone’s mission focused on probate litigation and administration matters in order to cultivate a deeper understanding and a greater level of expertise in this specialty.

While recent laws regarding trusts and estates have opened up new areas for potential disputes, contesting wills and trusts remains notoriously tricky. While many firms shy away from these challenging cases, Shawn created his firm to serve as the keystone for those seeking support for their complex probate needs.

With more than 40 full-time employees consisting of seasoned probate attorneys and a dedicated team of support staff, Keystone has grown to become one of the largest — if not the largest — firms in California focused exclusively on probate litigation and administration.

We represent trustees, executors, administrators, heirs, beneficiaries, creditors, guardians, and conservators in virtually any dispute that may arise in the context of a person’s death or incompetency, including:

  • Will and trust contests
  • Enforcement of beneficiary rights
  • Financial elder abuse claims
  • Petitions to recover trust and estate assets
  • Prosecution and defense of fiduciary misconduct
  • Conservatorship litigation
  • Probate administration

Rankings

Keystone Law Group, P.C. is nationally ranked in 1 practice areas and metro ranked in 2 practice areas. Best Law Firms rankings are based on a rigorous evaluation process.

Read how Best Law Firms ranks firms

National Rankings

Tier 2
Tier 2 for Trusts and Estates

Metro Rankings

Los Angeles
Tier 1 for Litigation - Trusts and Estates
Tier 1 for Trusts and Estates

Rankings

National Rankings

Tier 2
Tier 2 for Trusts and Estates

Regional Rankings

Los Angeles
Tier 1 for Litigation - Trusts and Estates
Tier 1 for Trusts and Estates

Practice Areas

The below are areas of legal specialty volunteered by the firm and do not designate a specialty in which a Best Law Firms ranking is held.
  • Litigation - Trusts and Estates
  • Trusts and Estates

Individuals Recognized in The Best Lawyers in America®

Keystone Law Group, P.C. has 7 lawyers recognized for individual performance in the 2025 edition of The Best Lawyers in America®. By receiving this Best Lawyers recognition from their peers for their professional excellence, these lawyers made Keystone Law Group, P.C. eligible for evaluation for Best Law Firms rankings. For almost two decades, Best Lawyers has awarded these singular accolades, making them the foundation of our Best Law Firms awards. Read more about our Best Lawyers process here.
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Client Comments

All client comments represent the opinions of the people who provided them. All potential clients are urged to remember that no two cases are ever completely alike and that the result in one case does not guarantee a similar result in another case.
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Awards

Awards are self-reported by firms and are not verified by the Best Law Firms rankings.

Main Location

Los Angeles, CA
11300 West Olympic Boulevard, Suite 910
Los Angeles, CA 90064
United States
424-403-1090 Call our Los Angeles, CA location at 424-403-1090 Get Directions Get directions to our Los Angeles, CA location

Management and Personnel

Firm Administrator
Biana Kerendian
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