World Housing Inequality Database
The World Housing Inequality Database (WHID) compiles standardized information
on housing space and price distributions across countries and subnational administrative units.
The first edition of the WHID includes the United States, Spain, and Belgium. Future editions will include additional countries.
Data
Browse and analyze housing inequality data through interactive visualizations and summary statistics.
All estimates are constructed using high-quality administrative data based on the universe of properties in a given country.
Click on a country to access its data repository.
Research & Media
Featured Research
Housing inequality in Spain
Housing inequality in Belgium: Novel estimates and a policy application
Authors
Director and Founder

Gerard Domènech-Arumí is a Visiting Assistant Professor of Economics at Vanderbilt University and a Research Fellow at the Spanish Opportunity Lab. He holds a PhD in Economics from Boston University (2021). His work lies at the intersection of labor, public, and urban economics and has been published in leading journals, including the Review of Economics and Statistics and the Journal of Public Economics. His primary research agenda examines how where people live shapes who they are, with applications to the economics of crime, housing, inequality, and social preferences. He is also interested in housing inequality and the evaluation of public policies.
Co-Founder

Giovanni Paolo Mariani is a PhD Candidate in Economics at Université Libre de Bruxelles. He holds a MRes in Economics and Statistics from ECARES (2021) and an MSc Double Degree from LUISS University and the Solvay Brussels School of Economics and Management (2019). In his research he uses a combination of spatial and administrative data to study two dimensions of inequality: housing and consumption of public goods.
Fellow

Lei Ma is an Assistant Professor of Real Estate at the University of Georgia’s Terry College of Business. She holds a PhD in Economics from Boston University (2025). Her research examines how market forces and government policies shape distributional outcomes in housing for households and developers.


