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Contact Us

International House at the University of California Berkeley
2299 Piedmont Avenue
Berkeley, California, 94720-2320 USA
General Information/Front Desk: (510) 642-9490

For help with a specific question, please contact one of the following departments directly:

Admissions/Housing Admits students and assigns rooms. (510) 642-9470 ihres@berkeley.edu
Berkeley International Office Advises international students. (510) 642-2818 InternationalOffice@berkeley.edu
Catering Services Provides in-house and off-site catering services. (510) 642-8057 ihcatering@berkeley.edu
Center for Intercultural Leadership Cross-cultural education/training. (510) 643-3124 cil@berkeley.edu
Development & Alumni Relations Alumni activities & fundraising. (510) 642-4128 ihalumni@berkeley.edu
Dining Services Meal service for residents and the public. (510) 643-3266 ihdining@berkeley.edu
Events and Rentals Event facilities and guest suite rentals. (510) 642-3438 ihevents@berkeley.edu
HR / Jobs at I-House Human Resources and staffing. (510) 643-5308 tascott@berkeley.edu
Program Office Organizes House and resident-initiated programs. (510) 642-9460 ihprograms@berkeley.edu
Resident Support Services:Safety,mediation,special accommodations.
(510) 642-9480 chabe@berkeley.edu

To contact an I-House staff member, see I-House Staff Directory (pdf).

Executive Office

Hans Giesecke
  • Hans C. Giesecke, Ph.D. Executive Director
    (510) 642-9468
    • Hans Giesecke began his service as Executive Director/CEO of International House at UC-Berkeley in July 2012. His driving focus has been on making I-House students' residential experience a top highlight of their enrollment experience at Berkeley. Prior to his arrival at Cal, Hans served as President of Anatolia College in Thessaloniki, Greece where he led an "American-style" international campus with more than 2,300 pupils and students from Kindergarten through MBA.

      Before serving in Greece, he was President/CEO of the Independent Colleges of Indiana, Inc. in Indianapolis, the President's Advisor for Student Affairs at International University Bremen in Germany (now Jacobs University), President of the Tennessee Independent Colleges and Universities Association (TICUA) in Nashville, TN, and Director of Marketing and Research with the Association of Independent California Colleges and Universities (AICCU) in Sacramento. He earned his Ph.D. from Vanderbilt University in Education and Human Development. His M.A. was received from the University of Wisconsin-Madison and his B.A. from Williams College.

      Hans enjoys many opportunities to interact with current I-House residents and the thousands of Cal alumni around the world who recall their I-House residency as one of their fondest, university-related personal memories.

Bonnie Johnston
  • Bonnie Johnston Executive Assistant to the International House Executive Director
    (510) 642-2196
    • Bonnie Johnston has worked in a variety of administrative capacities in the non-profit sector for over 25 years.

      She joined International House in July 2013, having previously worked at several nearby institutions. Bonnie and her family have resided in Berkeley since 1991. She most recently was Executive Administrator to the Office of the President at San Francisco Theological Seminary in Marin County for nearly four years, managing the office, supporting the president, planning events, staffing two Board committees and serving as the primary liaison to the 36-member Board of Trustees.

      Previously, Bonnie worked as assistant to the president, development associate, designer and volunteer coordinator at New College for Advanced Christian Studies in Berkeley. After the institution changed direction and reduced in size, she worked for 16 years at one of the Affiliate Centers of the Graduate Theological Union, the Center for Theology and the Natural Sciences (CTNS) in progressively responsible roles. As Administrative and Communications Director at CTNS, she oversaw development, membership, finances and corporate work of the center, enlarged and expanded the communications and public relations work and supported the Board of Directors. She refers to herself as a "Jane of all trades."

      Bonnie is pleased to be working at International House to help advance its mission of peace, harmony, tolerance, and mutual respect. She looks forward to engaging with the Board of Directors, staff, volunteers and residents, and partnering with various university departments on the Gateway Fellowship Program and other initiatives managed by the Executive Office.

I-House Operations and Center for Intercultural Leadership

Bonnie Johnston
  • Jason Patent Director of the Center for Intercultural Leadership and I-House Chief of Operations
    (510) 643-6625
    • As the Director of the Center for Intercultural Leadership (CIL), Jason Patent is responsible for building I-House's existing training programs and expanding them to meet the needs of increasing numbers of I-House residents, UC Berkeley campus units, and external businesses and non-profit organizations.
      As the Chief of I-House Operations, Jason works closely with other directors and top managers to ensure that the programs and services I-House offers continue to develop in ways that meet residents’ needs and interests in the following areas:

        •  Resident Intake (Admissions)
        •  Financial Aid and Scholarships
        •  Resident Support Services
        •  Activities, Conferences, and Programs
        •  Events and Facilities Rentals
        •  Physical Operations – including Maintenance and Custodial Services
        •  Human Resources and Personnel

      Jason has an undergraduate degree in East Asian Studies from Harvard, a Master’s degree in the same field from Stanford University, and he completed an M.A. and a Ph.D. in Linguistics at UC Berkeley. Jason is known for his ability to teach and to find practical uses for theoretical concepts. He is committed to using his skills and experiences to foster understanding and successful collaboration among international populations. His previous professional roles include: American Co-Director of the Hopkins–Nanjing Center for Chinese and American Studies in Nanjing, China; Inaugural Director, Beijing Center, Stanford Bing Overseas Studies Program; Consultant at Gap International; Vice President, Communications & Marketing at Orchestrall, Inc.



Conducts programs for I-House, the UC Berkeley campus, and the Bay Area.

Liliane Koziol
  • Liliane Koziol Ph.D. Director of Programs
    (510) 642-9460
    • Liliane Koziol has been Director of Programs since 1990. Her passion has been to engage students in the life of I-House and help them generate new multi-cultural approaches that can be applied to their careers and other lifetime pursuits. With this vision, she has crafted and offered thematically-linked cross-disciplinary programs for I-House, the campus, and the Bay Area in collaboration with academic units, governmental agencies, and NGOs. She also has designed, implemented, and managed cross-cultural, diversity and leadership trainings and programs for I-House, the broader Berkeley community, and nationally, as part of her leadership activities in NAFSA: Association of International Educators.

      Prior to assuming her current position, she was Director and Associate Professor in the Department of English at the University of Madagascar and also Director of the International Center at Indiana University. She earned her Ph.D. in English and Semiotics from Indiana University where she also received a Masters in College Student Personnel Administration. She has a Masters in American Civilization and a BA in English from the University of Madagascar. She currently teaches a course on Navigating Cultures in the Peace and Conflict Studies Department and has taught in the Linguistics Department at UCB.


Admits students and assigns rooms.

Ryan Jones
  • Ryan Jones Director of Admissions
    (510) 642-9471
    • Ryan Jones joined the International House team in 2010 as the Director of Admissions. In this capacity, he oversees all aspects of housing administration and residential life and services. This includes marketing and outreach, application review and management, and room assignments, as well as supervising the Residential Manager and Front Desk operations.

      Ryan has more than 15 years of professional experience in the field of higher education administration and student affairs. During his career, Ryan has worked in a number of areas including new student orientation, academic advising, student activities, residential life and judicial affairs. He served as a live-in housing professional for ten years before advancing to the role of Assoc. Dean of Students at the California College of the Arts where he was in charge of campus housing, judicial affairs and student activities. Throughout his career, Ryan has worked with select student populations with a focus on diversity education. As part of his master's degree program, he completed a minor in diversity education and has broad experience as an intercultural trainer.

Resident Support Services (RSS)

Responsible for residential life, safety & security, student conduct, and housing accommodations.

Maribel Guillermo
  • Maribel Guillermo Manager of Resident
    Support Services
    (510) 642-9480
    • Maribel Guillermo joined I-House in 1997, initially working in different capacities for the Admissions Office and the Program Office. She has been the Manager of Resident Support Services since 2001. In this capacity she oversees residential life, including the safety and security of residents, student conduct, special housing accommodations, and assists residents with conflict mediation. Maribel also supervises the 15 Resident Assistants who monitor the well-being of the residents both during the academic year and summer and is responsible for the recruiting, hiring, and training of her student staff. Maribel graduated from UC Berkeley with a B.A. in Sociology and holds a certificate in 'Multicultural Conflict Mediation and Resolution'. Her professional career began as an elementary school teacher in her native Mexico. Maribel also worked as project manager for the international division of Berkeley-based World Institute on Disability.

  • Physical Operations

    Responsible for all physical aspects of the building.

    Greg Rodolari
    • Greg Rodolari Director of Physical
      (510) 642-9462
      • Greg Rodolari joined the International House team in May 2000 as Director of Physical Operations, a role in which he supervises a staff of 16, oversees all capital projects and handles physical operations for our 250,000 square foot building housing some 590 residents along with substantial conference and dining facilities. As both a licensed architect and a certified facility manager, Greg strives to continuously improve the I-House building's beauty and functionality. Completion of many physical projects over the last decade (with more in store) has fostered a higher quality of life for I-House residents and has made the historic building safer, more aesthetically-pleasing, and more user-friendly.

        Greg graduated from UC Berkeley in Architecture in 1978. His work history began at the San Mateo County Planning Commission in Redwood City, CA in 1973. He worked for Pacific Gas & Electric as an architect and facility manager in San Francisco until April 2000.


    Responsible for a wide range of business functions.

    Shirley Spiller
    • Shirley Spiller Business Manager
      (510) 643-8315
      • Shirley Spiller is responsible for all aspects of financial administration, including accounting, financial planning and reporting, audit and tax, as well as business services including information systems, admissions, purchasing, dining, and facilities management. Shirley is a Cal graduate, who received her bachelors from what is now the Haas Business School, and then followed up with a Masters in International Management from the Thunderbird School of Global Management. After two decades of traveling the world working in international finance, consulting, management and strategic planning for PepsiCo and Yum Brands, she returned to Berkeley and began a new professional service track in the not- for-profit sector at International House. Shirley looks forward to answering financially-related questions from residents and guests and working with residents on a variety of quality-of-service matters, safe party planning, and the I-House effort to achieve UC Berkeley's 'zero waste' goal by 2020, among other topics affecting budgeting and resource management.

    Human Resources

    Deborah Preston
    • Deborah PrestonHuman Resources/Labor Relations Manager
      (510) 643-5308
      • Deborah joined I-House in March 2014 as the Human Resources/ Labor and Employee Relations Manager. Deborah has a wide-ranging background in the human resources field, having worked in several related capacities over the last 25 years. She is primarily responsible for overall management and guidance of I-House human resource functions, including the recruitment and hiring process for all positions within I-House, resolving complex staff relations matters, evaluating and administering the various policies and procedures, labor relations, payroll, benefits, training and development, as well as formulating strategies and initiatives to enhance the overall I-House experience for our residents and other guests.

        Deborah received her B.S. degree in Business Management from St. Mary’s College in Moraga, California. Her previous professional experience include working as the Assistant Director of Human Resources for Contra Costa County, with an employee population of approximately 9,000 staff members, and a 21-year career at the Port of Oakland where she served as the Human Resources Manager and Labor Relations Supervisor.