Apartment Living

Senior Executives

Ziv Cohen

Chief Investment Officer
(310) 474-8400 ext 210

Mr. Cohen joined Resmark in 2001. With more than 20 years of real estate experience, he has been involved in the financing and development of over 15,000 residential units in the United States and Israel. Mr. Cohen’s responsibilities include overseeing the day-to-day operations and strategy for Resmark Apartment Living and Resmark Impact Ventures. Under his direction since 2011, Resmark’s multifamily division has acquired and developed over 5,000 units through joint venture and direct investments. Previously, Mr. Cohen established the firm’s Northern California Division in 2003 and successfully expanded its California operations. He also led Resmark’s emergence as a key player in the area of direct investments in land and housing in 2007.

Prior to joining Resmark, Mr. Cohen was a member of Fieldstone Communities’ management team, where he was responsible for land acquisition and entitlements, product design, construction management, and sales and marketing operations for multiple projects. Before arriving in the United States, he served as an operations manager for Peled Residential Construction in Israel and prior to that as an officer in the Israeli Defense Forces.

Mr. Cohen sits on the National Association of Home Builders Multifamily Leadership Board. He received a Bachelor of Arts in Political Science from Tel Aviv University, and a Master of Business Administration from Pepperdine University.

Susan Wilson

Executive Vice President, Investment Underwriting
(858) 676-0608 ext 101

Ms. Wilson has been with Resmark since 2005 and performs all the investment underwriting functions for the company. With approximately 40 years of experience in the real estate industry, her expertise spans the acquisition, entitlement, development, financing, leasing, management, and disposition of projects in the residential, multifamily, retail, office, industrial, land, and hospitality markets.

Before joining Resmark, she was Senior Vice President of Development for Price Legacy Corporation, a publicly traded REIT. Prior to Price Legacy, she spent 15 years as a private developer and asset manager in the San Diego, California area.

Ms. Wilson holds a California real estate broker license; and received a Bachelor of Science with an emphasis in Finance from San Diego State University.

Stephen O’Neil

Vice President, Investments
(202) 747-0544 ext 203

Mr. O’Neil joined Resmark in 2011 and leads business development and investment origination of the firm’s for-sale and multifamily development investments in its Eastern U.S. markets. In addition, he actively oversees origination of Qualified Opportunity Zone investments, and manages financial analysis associated with Resmark’s capital raising efforts.

Previously, he was involved in all aspects of origination, due diligence, underwriting, and structuring of over $400 million of equity investments in development projects in Resmark’s Western U.S. markets. 

Prior to his tenure at Resmark, Mr. O’Neil was a financial analyst and asset manager at IHP Capital Partners’ Washington, D.C. office. 

Mr. O’Neil earned a Bachelor of Arts degree in History from Middlebury College. He serves on the Board of Trustees at Jemicy School, an independent school in Owings Mills, Maryland.

Tim Sipowicz

Senior Vice President, Asset Management
(949) 398-2066 ext 302

Mr. Sipowicz joined Resmark in 2013. His responsibilities include multifamily development, value-add renovation, repositioning, and lease-up of wholly-owned development investments; strategy and business plan development; and investor reporting.  He also plays a key role in assessing revenue and operational assumptions in the origination of new investments and directs all asset management and property operations management for Resmark’s joint venture and wholly-owned multifamily investments.

Previously, he served as Vice President at WintenAmerica, the United States commercial real estate operation of Australia’s Winten Development. At Winten, he was directly responsible for all business operations and compliance, including the management of over 70 multifamily investments and disposition of commercial real estate assets. His role also included management of loans, annual operating budgets, financial models, asset repositioning and value-add improvements, and marketing and sales strategies. 

Before his tenure with Winten, Mr. Sipowicz was an underwriter, asset manager and special assets manager for Macquarie Investment Bank, where he established and maximized high-value business relationships and strategic alliances for successful operation and recurring business. His professional experience also includes positions at Union Bank and Fremont Investment & Loan.

He holds a Bachelor of Science in Business Administration with an emphasis in International Business, from California State University, Long Beach.