Jason Mandel is a skilled partner in Armstrong Teasdale’s Financial and Real Estate Services practice group with more than 20 years of diverse transactional experience. In his transactional practice, Jason focuses on the areas of commercial real estate, financial services, private equity, mergers and acquisitions, venture formation, construction and general business representation. He routinely represents buyers, sellers, landlords, tenants, lenders, borrowers, sponsors and developers in all aspects of sophisticated and complex commercial transactions.

His commercial real estate practice involves a broad range of real estate asset classes, including commercial office buildings, hotels, multi-family properties, telecom/colocation facilities, mixed-use, and other commercial and retail spaces. Jason’s practice has a significant focus on the representation of borrowers and lenders in a variety of commercial finance transactions of all shapes and sizes, including real estate and construction financing, acquisition financing, asset-based lending, and other forms of debt and equity financing.


Prior to joining the firm, Jason was a partner at a mid-Atlantic law firm where he served as co-chair of the Construction Law group. Before that, he was an associate at a Philadelphia law firm.


  • Rutgers School of Law  (J.D., 1997)
    • Hunter Advanced Moot Court Semi-Finalist
    • Moot Court Board
  • Rutgers University  (B.A., 1994)
    • Golden Key National Honor Society
  • Hebrew University of Jerusalem, Rothberg School for Overseas Students  (1993)


  • Pennsylvania
  • New Jersey
  • U.S. District Court, Eastern District of Pennsylvania
  • U.S. District Court, District of New Jersey

Charitable and Civic Involvement

  • March of Dimes (Supporter, March for Babies Team Leader)
  • Maxie’s Hot Chocolate House (Operations Manager, supporting LiveConnections)
  • Parents Advisory Network (PAN)
  • Youth Baseball and Basketball Coach (Radnor, PA)
Contact Us
  • Worldwide
  • Boston, MA
  • Chicago, IL
  • Denver, CO
  • Dublin, Ireland
  • Edwardsville, IL
  • Jefferson City, MO
  • Kansas City, MO
  • Las Vegas, NV
  • London, England
  • Miami, FL
  • New York, NY
  • Orange County, CA
  • Philadelphia, PA
  • Princeton, NJ
  • Salt Lake City, UT
  • St. Louis, MO
  • Washington, D.C.
  • Wilmington, DE
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Boston, MA
800 Boylston St.
30th Floor
Boston, MA 02199
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Boston, Massachusetts
Chicago, IL
100 North Riverside Plaza
Suite 1500
Chicago, IL 60606-1520
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Chicago, Illinois
Denver, CO
4643 S. Ulster St.
Suite 800
Denver, CO 80237
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Denver, Colorado
Dublin, Ireland
Fitzwilliam Hall, Fitzwilliam Place
Dublin 2, Ireland
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Edwardsville, IL
115 N. Second St.
Edwardsville, IL 62025
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Edwardsville, Illinois
Jefferson City, MO
101 E. High St.
First Floor
Jefferson City, MO 65101
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Jefferson City, Missouri
Kansas City, MO
2345 Grand Blvd.
Suite 1500
Kansas City, MO 64108
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Kansas City, Missouri
Las Vegas, NV
7160 Rafael Rivera Way
Suite 320
Las Vegas, NV 89113
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Las Vegas, Nevada
London, England
Royal College of Surgeons of England
38-43 Lincoln’s Inn Fields
London, WC2A 3PE
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Miami, FL
355 Alhambra Circle
Suite 1200
Coral Gables, FL 33134
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New York, NY
7 Times Square, 44th Floor
New York, NY 10036
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Orange County, CA
19800 MacArthur Boulevard
Suite 300
Irvine, CA 92612
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Philadelphia, PA
2005 Market Street
29th Floor, One Commerce Square
Philadelphia, PA 19103
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Philadelphia, Pennsylvania
Princeton, NJ
100 Overlook Center
Second Floor
Princeton, NJ 08540
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Princeton, New Jersey
Salt Lake City, UT
222 South Main St.
Suite 1830
Salt Lake City, UT 84101
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Salt Lake City, Utah
St. Louis, MO
7700 Forsyth Blvd.
Suite 1800
St. Louis, MO 63105
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St. Louis, Missouri
Washington, D.C.
1717 Pennsylvania Avenue NW
Suite 400
Washington, DC 20006
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Wilmington, DE
1007 North Market Street
Wilmington, DE 19801
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Wilmington, Delaware