Our Team

In August 2016, Maureen became Habitat for Humanity Greater San Francisco’s Chief Executive Officer. She brings over 30 years of leadership experience and as CEO, Maureen's first priority has been to execute the organization's ambitious growth plans to double homebuilding efforts by 2025.
 
Prior to Habitat, she served as a consultant and advisor for various nonprofits, government initiatives, and other businesses. Previously, Maureen was the President and CEO of Goodwill San Francisco, overseeing all administrative, policy and fiduciary functions of the social enterprise. Before joining Goodwill San Francisco, she worked for Revolution Foods as Regional Vice President, overseeing business development and operations. Maureen also founded and served as President and CEO for The Youth Leadership Institute for 20 years. She serves on the Board of Directors of The Marin Community Foundation, The Center for Volunteer and Non-Profit Leadership, and Youth Leadership Institute.
 
Maureen was named one of San Francisco Business Times, "Most Influential Women in Bay Area Business" in 2015 and 2019. She has an MBA in Strategic Leadership from Dominican University.

With more than 20 years of finance and operations experience Jen is responsible for financial management and strategy at Habitat Greater San Francisco. Prior, Jen served as Vice President of Finance at Hotel Tonight, leading finance, accounting, and IT functions. Previously, she served as the Senior Vice President of Finance for CBS Interactive. In her role, Jen led a team responsible for forecasting, budgeting, and pricing for more than 35 online brands. Before CBS Interactive, she began her career as an analyst for Capital One Financial Corporation in its Marketing & Analysis and Operations groups. Jen has an S.B. in Mechanical Engineering from Harvard College and an M.B.A. from the Stanford Graduate School of Business.

Erin Colton’s role as Vice President of Construction is to bring Habitat Greater San Francisco’s partnership model to life on the construction site. Erin started building homes with Habitat for Humanity as an AmeriCorps member in 2001 and never looked back. Having learned from some great mentors, she has built over 100 Habitat homes in the Bay Area, ranging from two-story single-family homes to mid-rise condominiums. She has also contributed to Habitat projects around the world, reaching from Fairfax, VA to Hiệp Đức, Vietnam. Erin lives in Oakland with her family.

Matt has more than 25 years in the social sector, including positions of leadership in community development, affordable housing, youth development, and youth organizing.  As Chief Program Officer for Habitat for Humanity Greater San Francisco, Matt leads of team of dedicated staff focusing on home preservation, volunteer engagement, and homeownership development across San Francisco and Marin and San Mateo Counties.  Matt is an experienced program designer and trainer, as well as the author of several publications, tool kits and curricula in the areas of youth development, youth philanthropy, youth organizing.  He has Masters degrees in Social Work and Urban Planning from the University of Michigan. When he’s not raising money, designing the next program, or writing emails, he likes to spend time with his family and friends and take an occasional bike ride. 

In March 2021, Constanza became Habitat for Humanity Greater San Francisco’s Vice President of Real Estate. She brings over 20 years of experience to helping the team execute the organization's ambitious growth plans to double homebuilding efforts by 2025.

Prior to Habitat, she served as Vice President of Real Estate for a for-profit impact investing firm located in San Francisco. Previously, Constanza served as a Senior Analyst for Kamehameha Schools, overseeing financial feasibility, highest and best use, and project optimization for the non-profit organization. Constanza has several years of experience in affordable housing, community-oriented developments, and sustainable green building design.

Julia joined the Habitat for Humanity Greater San Francisco team in 2020, bringing with her more than a decade of experience in nonprofit fundraising. As Vice President of Development, she is responsible for fundraising strategy and leads a team of fundraising professionals who develop partnerships and raise essential funds in support of affordable homeownership in the Bay Area.

Prior to Habitat for Humanity Greater San Francisco, Julia was Director of Development at the Bay Area Discovery Museum, where she oversaw annual fundraising to support STEM education and a $19M capital campaign.

Monica (she/her/hers) has worked for over twenty years in community-based, multi-service organizations in the Bay Area. During her career, Monica has worked with at-risk youth, formerly homeless single adults, and marginally housed and homeless families. Monica has a Master’s Degree in Organization Development from Sonoma State University and has worked for the last six years in human resources and operations. Monica is excited to bring her experiences with employee engagement, process improvement, organizational effectiveness, and training and professional development to Habitat Greater San Francisco.

Brand Strategist Consultant
Hilary is currently a principal of Billings Brand Development, an independent brand strategy advising firm specializing in creating lifestyle brands. Her projects include developing new brands and brand extensions for large companies, such as Walmart, Crate & Barrel, and Hallmark, as well as defining brand strategies for startup companies such as, Minted, Hayneedle and Pinkberry. Hilary has 25 years of experience in retail and hospitality branding, including as Chairman and CEO of RedEnvelope and in senior roles for Starwood Hotels and Williams-Sonoma Inc. She has served on several for-profit boards, including for public companies such as Peet’s Coffee & Tea and Design Within Reach. Hilary holds a Bachelor of Arts in Art History and English from Brown University.

Vice President, Credit Administration, First Republic Bank
Dameon is responsible for performing a variety of duties across First Republic Bank's Credit Administration platform. Prior to his role in Credit Administration, Dameon was the Director of Credit Risk where he was responsible for identifying, assessing, measuring, and monitoring credit risk across the Bank and ensuring appropriate risk controls and responses. Prior to First Republic Bank, he was Vice President, Commercial Banking at Union Bank.  He received his Master's in Business Administration from George Washington University and B.A. from Franklin and Marshal. He is also board member for America Scores Bay Area.

Director of Corporate Real Estate for North America, Facebook
Nick currently serves as Facebook’s Director of Corporate Real Estate for North America, where he manages all aspects of the company’s North America real estate strategy and portfolio, which now spans over 55 offices in approximately 25 cities.  Previously, Nick spent nearly 7 years as in-house legal counsel to Facebook’s Global Real Estate and Data Center Development teams, negotiating numerous real estate and renewable energy transactions and securing land use entitlements and economic incentives for Facebook’s office and data center development projects worldwide.

Outside of his work at Facebook, Nick has been an active volunteer advisor in the San Francisco Bay Area real estate community.  Nick currently serves on the board of directors for Habitat for Humanity, Greater San Francisco, and he has been actively involved with the Urban Land Institute (ULI) at both the national and local district council levels since 2007.

Nick earned his J.D. from USF Law in 2006 (including an honors certificate in intellectual property) and his B.A. in Political Science from UCLA in 2001. 

Chief Operating Officer, Salesforce.org
Sam Allen is a highly accomplished executive with diverse skills encompassing team leadership, business development, alliance creation, asset management and acquisitions, forged in the Fortune 50 & honed in start-ups. He is a fiscally savvy and innovative leader who runs through walls. Sam has demonstrated his skill as an exemplary growth architect and catalyst to scale. Intuitive, analytical with an acute business acumen, Sam excels at aligning core business with strategic goals. He is experienced and adept at M&A, Venture Capital and Angel fund raising.

Principal, Heidi Hansen Architect
Heidi Hansen is an architect known for her stunning home designs and collaborative style. Heidi is highly engaged as a volunteer, and dedicated to affordable housing, environmental issues, children's rights, and access to education.

She has been actively volunteering with Habitat for Humanity Greater San Francisco and participated in the Global Village trip to Viet Nam and the Legacy Trip to Nepal. Heidi brings many valuable relationships via her networks in Marin, San Francisco, and the Peninsula.

President of Real Estate, The Sobrato Organization
As President of Real Estate at The Sobrato Organization, Mr. Hollister has day-to-day responsibility for the company’s commercial and residential real estate activities, including 15 million square of existing properties and a development pipeline valued at more than $1 billion. He oversees the real estate team in deal sourcing, development, marketing, construction, financing and asset management. Prior to joining TSO in 2013, Mr. Hollister served Hines for 17 years, most recently as Senior Managing Director and Country Head for China and Australia. At Hines he contributed to the development and marketing of more than 14M sf of commercial and residential real estate, representing more than $3B in value. Based in Shanghai since 2006, Mr. Hollister directed all activities for China and Australia. Previously based in Seattle, he oversaw all acquisition, development and disposition activities for the Pacific Northwest. Mr. Hollister earned his Bachelor of Arts degree from Dartmouth College in 1989 and his Master of Business Administration from the Stanford Graduate School of Business in 1996 and is a member of the Stanford Real Estate Council.

Vice President of Customer Experience, Prologis
Karen L. Jackson has over 20 years’ experience in corporate America leading efforts focused on executing transformational business strategies that initiate market disruption and deliver sustainable competitive advantage. Karen excels at building relationships at the executive level and creating partnerships that drive growth and efficiencies for both the top and bottom lines. Karen is Vice President of Customer Experience for Prologis, and leads their Global Voice of the Customer program focused on metric driven performance, continuous improvement, and innovation that facilitates lifetime customer loyalty.

Her career has spanned multiple cultures, continents and countries. Karen has a unique ability to transcend the barriers of culture and language that tend to slow others down to create alignment among diverse stakeholders with a shared commitment to achieve unprecedented results. Her work has taken her beyond the U.S. to South Africa, Sweden, Poland, Japan, Malaysia, England, France, Belgium, Denmark, Australia, Singapore, Japan and Germany.

Karen currently sits on the San Francisco State University Customer Experience Advisory Board. Previously, Karen sat on the Advisory Board of Capital Analytics. Karen has a personal passion for philanthropic interests that focus on underserved populations. She has actively supported Black Girls Code as a mentor. She is the founder of Just Us Denied, a non-profit focused on preventing injustice against people of color and is the former founder of The Peace of Mind Foundation, a non-profit advocacyfor at-risk women and children.

Partner at Shartsis Friese LLP
David Kremer is the senior member of the real estate department at Shartsis Friese. His practice includes all aspects of complex commercial real estate transactions, including acquisition, development, financing, leasing and disposition of commercial properties. David received a B.A. from Pennsylvania State University and a J.D. from University of California, Hastings College of the Law. At Hastings, Mr. Kremer was an editor of the Hastings Law Journal and a member of the Order of the Coif. Mr. Kremer also served as an extern to Associate Justice Frank K. Richardson of the California Supreme Court.

Jeffrey Lee, Managing Director, Northern Light Venture Capital
Jeff has been involved in technology venture capital and entrepreneurship for over 20 years. He is a Managing Director at Northern Light Venture Capital, an early stage technology investor focusing on opportunities in Asia, which he co-founded in 2005. At Northern Light, Jeff chairs of the investment committee and oversees strategic planning, investor relations, and value-add activities for the portfolio. Previously Jeff worked in strategic and product marketing at Agilent Technologies Wireless Semiconductor Division, the predecessor of Broadcom Limited (NASDAQ:AVGO), working on front-end RF components for high speed wireless networks. Jeff began his career in TMT corporate advisory at Salomon Smith Barney and Jardine Fleming, a Hong Kong-UK based merchant bank. He received his AB from Harvard College in Economics, and an MBA from the Wharton School, University of Pennsylvania.

Jacob Moss serves as Plant’s first and only In-House Counsel. Mr. Moss is a member of the executive management team and is responsible for overseeing risk management for the entire company. Mr. Moss negotiates and manages all contracts, including prime contracts, subcontracts and various vendor agreements. He also oversees outside counsel for all litigation, pre-litigation, construction, employment, human resources, Cal/OSHA and general commercial issues.

Prior to joining Plant, Mr. Moss worked for a law firm handling complex construction litigation and transactional issues for general contractors, subcontractors and owners. He gained extensive knowledge of mechanic’s liens, payment bonds and stop notices. He also learned the technical aspects of construction through his work on construction defect cases and Right to Repair claims.

Mr. Moss obtained a juris doctor from Santa Clara University School of law, and a Bachelor of Arts from Bucknell University where he played varsity baseball for four years.

Executive Partner, Holland and Knight
Tamsen Plume is the executive partner of Holland & Knight’s San Francisco office and partner of the firm’s West Coast Land Use and Environmental Group. She has extensive experience representing investors, developers, national companies and agencies in due diligence, permitting and compliance with a particular expertise in complex land use-related contracts, including Development Agreements and Disposition and Development Agreements. Projects include entitlement procurement, including CEQA compliance, from local, state and federal agencies for residential, retail, commercial and mixed-use projects. Ms. Plume received her B.A. from University of Virginia with honors and her J.D. from Hastings College of Law, cum laude. She is part of the California and District of Columbia Bar Associations.

Retired Partner, Bregante + Company LLP
Ken Preston has been a CPA since 1977 and is a member of the California Society of Certified Public Accountants and the American Institute of Certified Public Accountants. Ken holds a Bachelor of Business Administration in Accounting from the University of North Carolina. He came to the Bay Area in 1979 from North Carolina and worked in a San Francisco public accounting firm as a manager and then as a partner until 1990. In 1990, Ken joined Bregante + Company LLP as a partner.
Ken has provided audit, review and compilation services to many of the firm's clients that are closely held businesses and nonprofit organizations. He has been instrumental in building the nonprofit portion of the business. He has made many board presentations regarding nonprofit financial statements and consulting in the not-for-profit field. He works with a wide range of clients and is actively involved with individual, partnership and corporate taxes and tax planning.
He has been a long term board member of the Center for Volunteer and Nonprofit Leadership (CVNL), and Youth Leadership Institute (YLI) and has served as Board Chair in both organizations. He is still active in several task groups at YLI including a newly formed YLumni group. In addition, he has served on various committees throughout the years such as the Finance Committee and audit committee. Lastly, he has also served in the past on the board of the Marin Literacy Program and on the finance committee of Lifehouse Agency.

Senior Managing Director, Tishman Speyer
Mr. Shannon is the senior managing director of the San Francisco office of Tishman Speyer, a private family-controlled commercial real estate company headquartered in New York City. He has been at Tishman for over twenty years. His career started in finance and debt instruments at Prudential, and then pivoted to equity real estate at GE Capital. Under Mr. Shannon’s leadership, Tishman has developed more units of affordable housing in San Francisco than any other company, exceeded only by the nonprofit housing developers. This includes Tishman’s very successful partnership with the Tenderloin Neighborhood Development Corporation (TNDC) on a number of projects of affordable housing. Mr. Shannon has served on a number of non-profit boards, most notably SPUR, where he currently sits on the Executive Board. Mr. Shannon received an AB, magna cum laude, and graduated with an MBA, with high honors, from Harvard University.

Vice President, Kaiser Permanente
Mark Tortorich is the Vice President for Northern California Service Delivery with Kaiser Permanente’s National Facilities Services. In this capacity, Mark oversees a 400-person staff supporting capital facilities projects, clinical technology, facilities operations, and real estate acquisition. The 10-year strategic plan incorporates cashflows between $1B and $2B annually. Prior to joining Kaiser, Mark was the Vice President for Real Estate Design and Construction for Stanford Health Care and Lucile Packard Children’s Health at Stanford. An architecture graduate from California Polytechnic State University in San Luis Obispo, Mark is a Fellow of the American Institute of Architects and an Executive Leadership Team member for the American Heart Association’s Hard Hats for Heart campaign.

Vice President, Jordan Park
Nancy Turner is a Vice President at Jordan Park, an investment management and financial advisory firm with over $12 billion in assets under management. She is an empathetic problem solver with deep financial experience and expertise. Previously, she was a Managing Director in investment banking at Perella Weinberg Partners executing complex restructuring transactions involving contested valuations, raising capital, M&A, strategic alternative assessment and stakeholder negotiations. She previously worked at Greenhill & Co and Houlihan Lokey. Nancy started her career as an Analyst at Cambridge Associates and as an Accountant in commercial finance. She earned her BA from Duke University and her MBA from the University of Virginia Darden School of Business. She lives in Mill Valley with her husband and three daughters. Nancy volunteers at St. Vincent de Paul, San Francisco Marin Food Bank, Redwoods Senior Community and Marine Humane Society with her family.

Retired Senior Executive Vice President, General Counsel and Secretary for Bank of the West
Vanessa has deep expertise in financial services, legal, governance and risk mitigation. From 2006 until her retirement in October 2020, she served as Senior Executive Vice President, General Counsel and Secretary of Bank of the West where she led the legal, regulatory regulations and corporate secretary functions, and previously managed the areas of corporate social responsibility and an integrated security program including information and physical security and fraud prevention. Prior to joining Bank of the West, Vanessa served as Senior Vice President, General Counsel and Secretary of Catellus Development Corporation, a publicly traded real estate company. She began her legal career in private practice in Atlanta, Georgia. Vanessa holds a bachelor's degree from the University of North Carolina, Chapel Hill and a law degree from the University of California Berkeley School of Law.

Genna Yarkin is an associate attorney in Holland & Knight's San Francisco office who focuses on environmental law, land use, and real estate. Ms. Yarkin has experience throughout California with residential, commercial, mixed-use and industrial projects. She has a keen interest in housing law and is experienced in harnessing California law to benefit communities in need of housing. Ms. Yarkin has been with Holland & Knight since 2015 and serves as the chair of the San Francisco office's Diversity, Equity and Inclusion Committee. She also serves as a member of the board of Greens Restaurant, a nonprofit vegetarian institution that has supported the San Francisco Zen Center for more than 40 years.