Penn IUR is affiliated with more than 200 experts in the field of urbanism. Its Faculty Fellows program identifies faculty at the University of Pennsylvania with a demonstrated interest in urban research; the Penn IUR Scholars program identifies urban scholars outside of Penn; and the Penn IUR Fellows program identifies expert urban practitioners. Together, these programs foster a community of scholars and encourage cross-disciplinary collaboration.

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Affiliated PhD Student

Jacob Krimmel


PhD Candidate, Applied Economics, The Wharton School, University of Pennsylvania


Jacob Krimmel is a third year PhD student in Applied Economics at The Wharton School, where he works closely with Professors Fernando Ferreira, Ben Keys, and Joe Gyourko of the Real Estate Department. Jacob’s interests are at the intersection of urban economics and public policy, including housing and real estate economics, consumer finance, local public economics, and income and wealth inequality. He is currently researching how federal policy and mortgage lending discrimination that occurred decades ago still has lasting impacts on neighborhoods across the US today. Prior to Wharton, Jacob worked as a research assistant at the Federal Reserve Board in Washington, DC, where his office studied the evolution of consumer finances and household wealth before, during, and after the Great Recession. Jacob has a master’s degree in public policy from the University of Maryland, where he also double-majored in economics and political science. In his free time, Jacob enjoys taking his dog Miso to the park, cheering on the Baltimore Orioles and Liverpool FC, and traveling to new cities. 


Selected Publications

Bricker, Jesse, Alice Henriques, Jacob Krimmel, and John Sabelhaus (2016). “Estimating Top Income and Wealth Shares: Sensitivity to Data and Methods,” American Economic Review: Papers and Proceedings, vol. 106, no. 5, pp. 641-645.

Bricker, Jesse, Alice Henriques, Jacob Krimmel, and John Sabelhaus (2016). “Measuring Income and Wealth at the Top Using Administrative and Survey Data,” Brookings Papers on Economic Activity, Spring, pp. 261-321.

Bricker, Jesse, Rodney Ramcharan, and Jacob Krimmel (2014). “Signaling Status: The Impact of Relative Income on Household Consumption and Financial Decisions,” Finance and Economics Discussion Series 2014-76. Board of Governors of the Federal Reserve System.

Dettling, Lisa J., Sebastian J. Devlin-Foltz, Jacob Krimmel, Sarah J. Pack, and Jeffrey P. Thompson (2015). “Comparing Micro and Macro Sources for Household Accounts in the United States: Evidence from the Survey of Consumer Finances,” Finance and Economics Discussion Series 2015-086. Washington: Board of Governors of the Federal Reserve System.


Faculty Fellow

Janet Rothenberg Pack


Professor Emerita of Business and Public Policy


Janet Rothenberg Pack is Professor Emerita of Business and Public Policy at The Wharton School. Her research interests lie in fiscal federalism and intergovernmental relations, political economy of economic policy, privatization, and urban and regional economic development. Pack has held previous appointments at Yale University, Southern Connecticut State College, and The New School for Social Research. She has also held visiting appointments at the Brookings Institution, European Institute for Public Administration, and the Hebrew University, among others. She is a member of the Advisory Board of The Taub Center for Social Policy Studies in Israel (1996 - present), and a Non-Resident Senior Fellow at the Economic Studies and the Metropolitan Center, The Brookings Institution (1999-present).


Selected Publications

Pack, Janet Rothenberg and Gary Burtless, eds. 2010. Brookings-Wharton Papers on Urban Affairs: 2008. Washington, DC: Brookings Institution Press.

Pack, Janet Rothenberg, ed. 2005. Sunbelt/Frostbelt: Public Policies and Market Forces in Metropolitan Development. Washington, DC: Brookings Institution Press.

Pack, Janet Rothenberg. 2002. Growth and Convergence in Metropolitan America. Washington, DC: Brookings Institution Press.


Faculty Fellow

Richard Voith


Adjunct Professor of Real Estate

President and Principal, Econsult Solutions, Inc.


Areas of Interest


    Richard Voith is Adjunct Professor of Real Estate in The Wharton School and President and Principal of Econsult Solutions, Inc. He is a well-known expert in real estate economics, transportation, and applied microeconomics. Prior to joining Econsult Solutions, Voith was Economic Advisor at the Federal Reserve Bank of Philadelphia where his responsibilities included analysis of Philadelphia’s regional economy. In addition to his consulting and academic research, Voith has worked frequently in the public policy arena. He is a founding board member of Pentrans, an organization dedicated to improving transportation in Pennsylvania. In 2006, he was appointed by Governor Rendell to the newly created Transportation Funding and Reform Commission charged with recommending appropriate levels of funding for transit systems, roads and bridges throughout the Commonwealth. He also served on the Board of Directors of the Southeastern Pennsylvania Transportation Authority (1992-2000) as one of two representatives for the city of Philadelphia on the Board. He served as Vice Chairman of SEPTA for three years (1996-1998); during his tenure, he participated in the procurement of a new fleet of subway cars, the hiring of a new management team, development of financing mechanisms for an ambitious capital plan as well as efforts to dramatically streamline the authority to reduce costs while expanding service throughout the Greater Philadelphia region.


    Selected Publications

    Voith, Richard P, and Susan M Wachter. 2012. “The Affordability Challenge: Inclusionary Housing and Community Land Trusts in a Federal System.” In Value capture and land policies, edited by Gregory K. Ingram and Yu-Hung Hong. Cambridge, MA: Lincoln Institute of Land Policy.

    Voith, Richard P. 2011. “The Economics of Recovery.” In Managing Urban Disaster Recovery: Policy, Planning, Concepts and Cases, edited by Edward J. Blakely, Eugenie L. Birch, Roland V. Anglan and Harou Hayashi. Crisis Response Publications.

    Crone, Theodore, Leonard Nakamura, and Richard P. Voith. 2010. “Rents Have Been Rising, Not Falling, in the Postwar Period.” Review of Economics and Statistics 92(3): 628-644.

    Zielenbach, Sean and Richard Voith. 2010. “HOPE VI and Neighborhood Economic Development: The Importance of Local Market Dynamics.” Cityscape 12(1): 99-131.

    Zielenbach, Sean, Richard Voith, and Michael Mariano. 2010. “Estimating the Local Economic Impacts of HOPE VI.” Housing Policy Debate 20(3): 485-522.


    Faculty Fellow

    Susan Wachter


    Albert Sussman Professor of Real Estate, Professor of Finance

    Co-Director, Penn Institute for Urban Research


    Susan M. Wachter is Sussman Professor and Professor of Real Estate and Finance at The Wharton School, and Co-Director of Penn IUR. From 1998 to 2001, as Assistant Secretary for Policy Development and Research, U.S. Department of Housing and Urban Development, Dr. Wachter served as the senior urban policy official and Principal Advisor to the Secretary on overall HUD policies and programs. At The Wharton School, she was Chairperson of the Real Estate Department and Professor of Real Estate and Finance from July 1997 until her 1998 appointment to HUD. She founded and currently serves as Director of Wharton’s Geographical Information Systems Lab. Previously, Wachter served as a member of the Board of Directors of the Beneficial Corporation from 1985 to 1998 and of the MIG Residential REIT from 1994 to 1998. She was the editor of Real Estate Economics from 1997 to 1999 and currently serves on the editorial boards of several real estate journals. Wachter has been a member of the Advanced Studies Institute of the Homer Hoyt Institute since 1989. She co-founded and is Co-Director of the Penn Institute for Urban Research. She is the author of more than 150 scholarly publications and the recipient of several awards for teaching excellence at The Wharton School.


    Selected Publications

    Acolin, Arthur, Xudong An, Raphael Bostic, and Susan M. Wachter. 2017. “Homeownership and Nontraditional and Subprime Mortgages.” Housing Policy Debate 27(3): 393-418.

    Wachter, Susan M., Arthur Acolin, and Scott Bernstein. 2017. “Opportunity, Housing Access, and Infrastructure.” Housing Policy Debate 27(3): 468-471.

    Wachter, Susan M. and Patricia Mccoy. 2017. “Representations and Warranties: Why They Did Not Stop the Crisis.” In Evidence and Innovation in Housing Law and Policy, edited by Lee Fennell and Benjamin Keys. Cambridge, U.K.: Cambridge University Press.

    Wachter, Susan M. and Joseph Tracy, eds. 2016. Principles of Housing Finance Reform. Philadelphia: University of Pennsylvania Press.

    Wachter, Susan M., ed. 2016. Public Pensions and City Solvency. Philadelphia: University of Pennsylvania Press.

    Acolin, Arthur, Laurie S. Goodman, and Susan Wachter. 2016. “A Renter or Homeowner Nation?” Cityscape 18(2): 145-158.

    Acolin, Arthur, Jesse Bricker, Paul S. Calem, and Susan Wachter. 2016. “Borrowing Constraints and Homeownership.” American Economic Review: Papers and Proceedings 106(5): 625-629.


    Affiliated PhD Student

    Xiao “Betty” Wang


    PhD Candidate, Business Economics and Public Policy, the Wharton Business School


    Xiao (Betty) Wang is a Doctoral Student in Business Economics and Public Policy at the Wharton Business School. Her research interests are in urban economics, real estate economics and public policy. Before coming to Penn, Betty earned a Bachelor’s degree in Economics, Mathematics and International Development Studies from Washington University’s College of Arts and Sciences. 


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