Our Company

The John Stewart Company began in 1978 with a commitment to providing high quality management for affordable housing in the Bay Area. Today, JSCo is a full-service housing management, development, and consulting organization employing over 1,300 people state-wide. According to the National Affordable Housing Management Association’s 2013 report, JSCo was the largest affordable housing provider in California, and ranked 6th 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 the promotion of ethnic and cultural diversity. Our professional backgrounds are in areas as diverse as real estate, finance, education, sociology, land use planning, public policy, architecture, engineering, construction, accounting and communication. Our diversity of experience, together with our commitment to providing service oriented housing, exemplifies the unique perspective and breadth of services we bring to every client.



Property Blueprint



Executive Corporate Staff

John K Stewart, Chairman

Mr. Stewart incorporated The John Stewart Company with three employees in 1978, drawing on his experience in real estate development and a personal commitment to the field of affordable housing. Mr. Stewart is actively involved in project acquisition, rehabilitation, syndication, management, consulting, marketing, and development activities undertaken by the firm.

Jack D. Gardner, President and CEO

Mr. 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 2001. He oversees all property acquisition, development, property management, consulting and marketing activities undertaken by the firm, which currently manages over 30,000 units of affordable, mixed income and market-rate multifamily housing throughout California and has three new housing developments under construction.

Dan Levine, Senior Vice President

Mr. Levine joined the John Stewart Company in 1997 as Director of Construction Administration, after nearly 25 years of practice as a registered architect. 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, Chief Operating Officer

Mr. Schwartz joined the John Stewart Company in 2013 and serves as the Chief Operating Officer. Based in San Francisco, Mr. Schwartz leads corporate operations including Finance, Payroll, Human Resources, Training and IT.

Margaret Miller, Vice President of Development

Margaret Miller joined the John Stewart Company in 2004 as a Project Manager and has been promoted over the past 13 years to now serve as JSCo’s Vice 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 environmental approvals, financial structuring, loan packaging, construction oversight and regulatory compliance.


Executive Property Management Staff

Loren Sanborn, Senior Vice President

Ms. Sanborn began her career in community organizing with the Tenderloin Senior Outreach Project. She joined the John Stewart Company in 1981 and held her first position with the Company in Senior Services. From there she rose through the organization holding property management positions rising to Vice President of the Bay Area region from 1994 through 2015. 

Ms. Sanborn has transitioned to a role in Client Services and Resident Relations and provides support as needed to the management team.

Steve McElroy, Vice President

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 HUD, CHFA, HCD, RHCP, and Low Income Housing Tax Credit properties. He is particularly adept at working with non-profit and board directed properties. He has assisted properties in securing and implementing rehab financing in excess of $3 million and has provided coordination for properties with multiple regulatory agreements and funding sources.

Tracy Esposito, Assistant Vice President

Tracy Esposito has been working in the property management field for over twenty years. For the past thirteen years, Ms. Esposito has worked with the John Stewart Company (JSCo) in its Sacramento regional office, rising from Regional Manager to Senior Regional Manager to Regional Director before being promoted to Assistant Vice President in charge of the Region in 2014.

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 financial analysis and planning, regulatory compliance, client communications and rehabilitation implementation ranging in scope from $250K to $3M.

Lori Horn, Vice President

Ms. Horn joined The John Stewart Company as Vice President of the Southern California Region in 2001. In this capacity, Ms. Horn is responsible for the management and operations over one hundred and fifty affordable multifamily communities, including over 10,000 housing units, throughout Southern California. Ms. Horn has worked in the affordable housing industry for over twenty-five years and possesses extensive experience and expertise in affordable housing regulatory compliance, financing, Section 42 low-income housing tax credits, HUD programs and marketing and lease-up procedures.

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 to over 5,300 units under management, including 70 affordable communities throughout Santa Clara, San Mateo, Santa Cruz, and Monterey Counties.