Karen R. Frostrom

Attorney Profile

Top Rated Business Litigation Attorney in San Diego, CA

Thorsnes Bartolotta McGuire LLP
 | 2550 Fifth Avenue, 11th Floor
San Diego, CA 92103
Phone: 619-514-3896
Fax: 619-236-9653
Selected To Super Lawyers: 2011 - 2021
Licensed Since: 2000
Practice Areas:
  • Business Litigation (50%),
  • Eminent Domain (30%),
  • Real Estate: Business (20%)
    Attorney Profile

    Attorney Karen R. Frostrom is a partner with the San Diego-based law firm of Thorsnes Bartolotta McGuire. A member of the firm's real property and business practice group, Ms. Frostrom deals primarily with cases involving complex business litigation, land use, eminent domain and condemnation matters, construction defects, contracts and municipal redevelopment. She also has extensive experience handling writs and appeals.

    Serving a diverse range of clients throughout San Diego and Orange counties as well as the rest of Southern California, Ms. Frostrom finds great reward in being able to advocate on behalf of those dealing with serious issues that affect their rights as property owners because she considers this to be one of an individual's most basic and fundamental entitlements.

    Taking this passion to the courtroom, Ms. Frostrom has achieved notable success helping her clients obtain the favorable results they expect and deserve for their pressing and complex disputes, and she earned the Outstanding Trial Lawyer Award each year from 2006 to 2008.

    Active in her legal community, Ms. Frostrom is a member of several local, state and national professional legal organizations, including the American Bar Association, the Consumer Attorneys of San Diego and the Consumer Attorneys of California, the San Diego County Bar Association and more. She has also served as the chair of the San Diego Lawyers’ delegation and the San Diego County Bar Association delegation, and she maintains active involvement with The State Bar of California's Conference of Delegates.

    A 1996 summa cum laude graduate of San Diego State University, Ms. Frostrom obtained her Juris Doctor magna cum laude from California Western School of Law in 1999. The State Bar of California admitted her to practice the following year, and she is also licensed to practice in Arizona as well as before the U.S. District Court for the Southern, Central and Northern Districts of California and the U.S. Court of Appeals for the 9th Circuit.

    Practice Areas
    • 50%Business Litigation
    • 30%Eminent Domain
    • 20%Real Estate: Business


    Selected to Super Lawyers for 11 yearsbottom-image

    Super Lawyers: 2011 - 2021

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    About Karen Frostrom

    Admitted: 2000, California

    Professional Webpage: https://www.tbmlawyers.com/partners/karen-r-frostrom/


    • Caltrans v. Anderprises, Outstanding Trial Lawyer Award, Consumer Attorneys of San Diego, 2008
    • City of San Diego v. Mesdaq  , Outstanding Trial Lawyer Award, Consumer Attorneys of San Diego, 2007
    • Southern v. UCSD  , Outstanding Trial Lawyer Award, Consumer Attorneys of San Diego, 2008

    Special Licenses/Certifications:

    • Member - Central District of California
    • Member - Southern District of California
    • Member - Ninth Circuit Court of Appeals
    • Member - Arizona State Bar
    • Member - Northern District of California

    Bar/Professional Activity:

    • Past Chair - Lawyers' Club Legislative Committee
    • Past Board of Directors - Consumer Attorneys of San Diego
    • Provisors Executive Committee
    • Past Chair - San Diego County Bar Association Eminent Domain Committee
    • International Right of Way Association
    • California Conference of Delegates
    • Past Chair - San Diego County Bar Association Legislative Committee
    • Past Board of Directors - California Conference of Bar Associations
    • Lompardo Inn of Court

    Pro bono/Community Service:

    • Attorney Coach - California High School Mock Trial Program
    • Court Appointed Special Advocate for Foster Children
    • Real Estate Litigation Mentor - New Lawyers' Division, San Diego County Bar Association


    • LoPreste adv. Five Star, 2014
    • Southern v. UCSD, D050506
    • De Anza Harbor Resort Association v. City of San Diego, 2007
    • Gosnell v. Procopio, 2012
    • Asbury adv. Silvergate, 2010
    • El Capitan v. Helix, 2013
    • Howard v. County of San Diego, 2011
    • San Diego Unified Port District v. San Diego Authority, D043695
    • Mesdaq adv. City of San Diego, 2005
    • Clymer v. Elder, 13-cv-55309
    • Filmwest v. State of Arizona, 2007
    • City of Escondido v. Nastich, D049526
    • National Quarries adv. County of San Diego, 2007
    • Briseno adv. State of California, 2013
    • Peeling v. City of San Diego
    • Tartre v. City of Poway, 2009
    • Pat & Oscars v. Foley, 2015
    • Community Youth Athletic Center v. National City, 2011
    • APPEALS:
    • Mani v. Yarpezeshkan, 2004
    • Kutzke v. City of San Diego, D070288
    • OPM v. MTDB, 2007
    • CYAC v. National City, D060001
    • Perlan v. Nexbio, 2014
    • Mesdaq v. Redevelopment Agency, D045874
    • Anderprises adv. State of California, 2007
    • Singh v. Singh, 2012
    • Peak Batteries v. Batteries Plus, 2010
    • Harris v. JC Penney, 2013
    • Rau v. Ngala, 2011
    • Howard v. County of San Diego, D55319
    • Southern v. UCSD, 2006
    • Surf N Turf Paradiso v. San Clemente, G053323

    Educational Background:

    • San Diego State University, B.A. Political Science, Magna Cum Laude
    • California Western School of Law, JD, Summa Cum Laude
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    Office Location for Karen R. Frostrom

    2550 Fifth Avenue
    11th Floor
    San Diego, CA 92103

    Phone: 619-514-3896

    Fax: 619-236-9653

    Karen R. Frostrom:

    Last Updated: 5/18/2021

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