About us

About our firm

SLG fits the conventional meaning of a boutique service firm. Our 50-year history has been dedicated to helping our clients achieve real estate syndication best-in-world practices. At different times in our history the firm would be intentionally grown and other times downsized. Today 90 percent of our work is devoted to offering documentation assignments, business consulting, and placement advisory. We have a network of other law firms that we call on for transaction, mortgage financing, regulatory audits, and litigation matters that effect our clients. These affiliate law firms range among international, national and local firms

Team Members

Mark Long

Founder, Lawyer

Contact details

619-517-1800
[email protected]
LinkedIn

Mark Long has practiced syndication law since graduating from the University of San Diego School of Law in 1973. Mark’s peers give him credit as one of the true pioneers of real estate syndication best practices. He was one of the founding members of the National Financial Wholesalers Association and the first author of 1031 partnership exchange practices (Big Money Brokerage: The Law and Methods of Real Estate Group Investing – 2 volumes 1980). In 1984, Mark developed and published the first manuals on real estate syndication due diligence (450 pgs) and real estate syndication management (550 pgs).

Since 1976 over 16,000 executives in five countries have attended his courses on syndication principles and practices. Over 100 universities, banks, broker-dealers and investment banking firms and advisory firms have been paid sponsors of these courses/trainings. In 2000, his book Financing the New Venture, was Amazon.com’s top rated new business investor financing book. Mark has been published over 20 times in trade journals and is a frequent expert witness in complex securities compliance cases. Since 2011, Mark has become one of the pioneers in the new field of new venture predictive analytics. See www.causalworks.ai

Mark’s experience includes having served as house counsel to Financial Group of America (1973-1976) and Ventana Global Funds (1994-1997). Between 1985 and 1986, Mark served as the National Marketing Director for the Kemper Insurance Company’s real estate syndication division. Between 1977 and 1993 Mark organized as general partner 52 syndication programs with 75 properties in 4 states. The investor capital for these syndication programs was raised through the FINRA broker dealer community.

Mark graduated from Long Beach State. On the track team Mark was nationally ranked and set a school record in the decathlon that stood for 25 years. He earned his law degree from University of San Diego.

Mark Jones

Technology

Contact details

619-756-1795
[email protected]

Mark has been the Chief Technical Officer and technical lead of numerous technology startup companies taking them from the ground floor to successful sustaining businesses. Mark has lead technology efforts in many areas including new developments in SaaS systems, first of kind modems for satellite communications, novel adaptive signal processing products for predictive cancellation, and new wireless products for agriculture and heavy equipment. A former nuclear officer in the U.S. Navy, Mark has an MBA from San Diego State, an MS in Electrical Engineering from Johns Hopkins and a BS in Engineering from University of California at Berkeley.

David Winkelman

Innovation Facilitator

Contact details

858-695-1234
[email protected]

David Winkelman has over 20 years of experience in change management, strategic planning, creative meeting facilitation and marketing. Mr. Winkelman’s areas of proficiency include: Organizational systems design, implementation and problem solving, breakthrough team building, leadership and employee development, and the creation of infographics and high-impact presentations. His work facilitates collaboration, innovation and transformation across major industries: business and consumer products and services, health care, aerospace. Winkelman’s strategic planning and facilitation experience began with the MG Taylor Corporation and the global management consulting division of Ernst & Young, in its Accelerated Solutions Environment (ASE), where months’ worth of work is accomplished in three days’ time through hands-on events tailored to large corporate teams.

Josh Martinez

Law Clerk

Contact details

Josh Martinez earned his Master of Business Administration (MBA) in Human Resource Management and his Bachelor of Arts (BA) in Marketing from La Sierra University. He is currently pursuing a Juris Doctor (JD) with a concentration in Labor and Employment Law at the University of San Diego School of Law, where he is expected to graduate in 2026.

Josh Martinez

Law Clerk

Contact details

[email protected]

Debbi Harrington received her Bachelor’s degree in Financial Management from National University in 1979. After working eight years with a local CPA firm as the Chief Financial Officer she started her own business and now manages her own practice. This includes many different types of businesses including law firms, interior design businesses, construction, personal service businesses and retail operations.

Debbi is a highly organized, detailed and focused individual with an acute handle on all the aspects of the financial and accounting functions necessary for good financial reporting. She also has a Masters in Counseling which has helped her with the personal aspects and relationships necessary for a well-run organization.

“Our firm was a seasoned and successful brokerage, property management and syndication firm when we engaged Syndication Law Group as our securities counsel in 2006. SLG’s services have always been delivered on time and on budget. We have leveraged their extensive experience in our strategic and growth plans as well. I am always referring SLG to companies and entrepreneurs trying to syndicate.”
Rand Sperry
President Sperry Equities and Sperry Commercial Global Affiliates

“We first engaged Syndication Law Group back in the 1980’s. SLG has always been much more to Allen Properties than merely our securities counsel, however. SLG took a lead role in introducing our firm to the broker-dealer market which ultimately resulted in a selling agreement with one of the top firms. Soon thereafter we completed three of our largest capital raises and purchased assets that prior to SLG’s involvement would have been out of our reach. Through the years we have navigated through all the possible market conditions and SLG’s advice has always been spot on. ”
Paul Allen
President Allen Properties

“Our firm has a 40 year history investing and developing real estate for our own account. Several years ago we decided to launch a syndication division. We were referred to Mark Long. We have capitalized on his legal work as well as his strategic help and contacts within the broker-dealer, due diligence and wholesaler sectors. Despite the tough capital markets we launched into in 2010 Mark’s advice on how to build and grow our syndication division has been an enabling part of our success.”
Jeff Carter
Managing Partner SGI Partners