The John Stewart Company (JSCo) was founded by John K. Stewart in 1978 to providing high quality property management for affordable housing in the Bay Area. Today, JSCo is a full-service housing management, development, and consulting organization employing almost 1,500 people state-wide. According to the National Affordable Housing Management Association, JSCo is the largest affordable housing manager in California and the 6th largest nationwide.
The staff at The John Stewart Company is as multi-faceted as the populations we serve. We have been recognized by the State of California with an award for “Excellence in the Workplace” for promoting of ethnic and cultural diversity. Our professional backgrounds are in areas as diverse as real estate, finance, education, accounting and communication. The diversity of experience along with our 42-year track record and expertise in providing Permanent Supportive Housing, exemplifies both the unique perspective and breadth of services we bring to every client.

Executive Corporate Staff
John K. Stewart, Founder and Chairman (1934 – 2020)
John Stewart incorporated The John Stewart Company (JSCo) with three employees in 1978, drawing on his extensive experience in real estate development and a personal commitment to the field of affordable housing. Mr. Stewart was actively involved in the firm’s project acquisition, rehabilitation, syndication, property management, consulting, marketing, and development activities until the final days of his life. Mr. Stewart…
Jack D. Gardner, CEO and Board Chair
Jack D. Gardner has been actively involved in the financing, development and management of affordable housing since 1985 and has served as President & CEO of the John Stewart Company since 2002. Under Mr. Gardner’s leadership, JSCo has grown to become one of largest managers of affordable housing in the United States, with over 32,000 units under management, and one…
Dan Levine, President of Construction & Maintenance Services
Daniel Levine joined the John Stewart Company in 1997 as Director of Construction Administration, after nearly 25 years of practice as a registered architect., and currently serves as President of Construction & Maintenance Services. Mr. Levine brings with him comprehensive expertise in the housing and construction industries and a long history of successful professional consulting to the John Stewart Company.…
Noah G. Schwartz, President of Property Management, COO
Mr. Schwartz joined the John Stewart Company in 2013 and serves as the President of Property Management and Chief Operating Officer. Mr. Schwartz brought more than 15 years of leadership experience in the non-profit and quasi-government sector when he joined the company and has a strong record leading organizations serving low-income communities. He served as the Executive Director of the…
Margaret Miller, President of Development
Margaret Miller joined the John Stewart company in 2004 as a Project Manager and now serves as JSCo’s President for Development. In this capacity, she supervises the firm's Project and Asset Managers and oversees the full range of corporate activities related to developing affordable and mixed-income multifamily housing, including identifying and acquiring properties, business development, project design, obtaining entitlements and…
Flora Cheung, Controller
Flora Cheung is an experienced accounting and finance professional with a focus on real estate, asset management, banking, and technology. She joined the John Stewart Company in 2018 after holding several senior finance and accounting roles at Hines, Union Bank, Allianz Asset Management, and Montgomery Asset Management. Flora is a Certified Public Accountant (inactive) and oversees all of JSCo’s corporate…
Executive Property Management Staff
Loren Sanborn, Senior Advisor – Client & Resident Relations
Currently serving as a special advisor on resident and community relations, Ms. Sanborn held a wide variety of positions during her 35 years with JSCo, ultimately serving as Senior Vice President and overseeing the company’s Bay Area region for many years. Ms. Sanborn began her career in community organizing with the Tenderloin Senior Outreach Project. She joined the John Stewart…
Mari Tustin, Senior Vice President
Ms. Tustin has been with the Company since 1980, serving as Vice President of the San Francisco office since 1983. In 1993 she relocated to Santa Cruz to open and manage new Corporate offices serving the South Bay and Central Coast counties. In this capacity she oversees the management and marketing of a diverse portfolio of over 80 properties including…
Steve McElroy, Senior Vice President of Property Management
Mr. McElroy oversees the management and marketing activities of the Bay Area Region. He is responsible for over forty multi-family properties of various types, including rentals, cooperatives, senior, family and special population housing. Mr. McElroy has been with The John Stewart Company since 1983 and has over thirty years of experience in housing management. He has extensive experience working with…
Tracy Esposito, Vice President
Tracy Esposito has been working in the property management field since 1999. Ms. Esposito has worked with the John Stewart Company (JSCo) in its Sacramento regional office since 2004, rising from Regional Manager to Senior Regional Manager to Regional Director to Assistant Vice President before being promoted to Vice President in charge of the Region in 2018. During her early…
Carlos Ortiz, Vice President
Carlos Ortiz joined the John Stewart Company in late 2019. As Vice President of JSCo’s Southern California Region, he leads an office overseeing an expanding portfolio of over 178 residential communities with more than 11,000 high quality affordable housing units. Carlos comes to JSCo after 10 years as a Senior Vice President with a Southern California-based development and management firm…
Warren Reed, Vice President
Warren Reed is Vice President of the John Stewart Company’s (JSCo’s) South Bay Regional Office and oversees all day-to-day operations of the Region. Mr. Reed joined JSCo as a Regional Manager in 2003, was later promoted to Director of Property Management and then Regional Vice President in 2016. During Mr. Reed’s tenure, the South Bay Region has doubled in size…
Jennifer Wood, Vice President
Ms. Wood has twenty-five years of progressive experience in affordable housing and multifamily property management. She has extensive experience with all types of local, state and federal programs including LIHTC, Project-Based Section 8, Public Housing, HOME, Bond, HOPE VI, RAD, tenant-based subsidy programs and more. Ms. Wood began her career as a Community Manager in 1994 with Goodale & Barbieri…