Newswise — PHILADELPHIA—Investing in structural home repairs in historically segregated, low-income, Black and Latino neighborhoods has been associated with reduced crime rates. In Philadelphia, when a home received repairs through a city-funded program, total crime dropped by 21.9% on that block, and as the number of repaired houses on a block increased, instances of crime fell even further, according to research from the Perelman School of Medicine at the University of Pennsylvania published today in JAMA Network Open.

In an effort to address an old housing stock and high levels of historical disinvestment in Philadelphia, the city implemented the Basic Systems Repair Program (BSRP) in 1995, which repairs structural damages to the homes of low-income owners, such as replacing an exterior wall to stop leaking, or electrical repairs that include replacing circuits that overheat, spark, or won’t stay on, causing inconsistent heating and unreliable electricity. The majority of BSRP homes are in Black and Latino neighborhoods. Researchers hypothesized that over time these micro-investments would have an impact on community health, including crime. 

Using BSRP data from 2006 through 2013, researchers determined that 13,632 houses on 6,732 blocks in Philadelphia received BSRP repairs. They then merged crime data – which included instances of homicide, assault, burglary, theft, robbery, disorderly conduct, and public drunkenness – from the Philadelphia Police Department with BSRP data to create a database that allowed them to understand the impact of BSRP investment on crime in every block across the city over time. This data revealed lower instances of all crime, including homicide, on blocks with a single BSRP-repaired home compared to blocks that were eligible for a BSRP-repaired home but did not get the intervention. With each additional repaired home, instances of crime on that block declined further.

“We can now add structural home repairs to the growing list of place-based neighborhood interventions with strong evidence that they can help reduce violent crime,” said lead author Eugenia South, MD, MSHP, an assistant professor of Emergency Medicine and Faculty Director of the Penn Urban Health Lab. “Violent crime is out of control in many cities across the country right now and policy makers should prioritize funding for structural, scalable, and sustainable interventions such as the BSRP that address the lasting scars of historical disinvestment in Black neighborhoods.”

The root causes of violent crime in Black urban neighborhoods are structural, including historical racial segregation, concentrated poverty, lack of economic opportunity, and deterioration of the neighborhood’s physical conditions – houses in disrepair, blighted vacant lots, and a lack of greenspace. What’s more, the health implications of violence exposure are vast and include increased depression, post-traumatic stress disorder and cardiovascular disease.

“There is a critical need to invest in the housing stock in cities across the U.S, particularly in majority Black neighborhood that have not received such investment for far too long, if ever,” said senior author Vincent Raina PhD, an Associate Professor of Planning and Urban Economics and the Faculty Director of the Housing Initiative at Penn. “This research shows that even small investments in housing stabilization benefit both those homeowners who live in homes that receive support and the blocks and neighborhoods in which they live through crime reduction.”

The research teams says that programs like BSRP are small relative to housing needs, and are not the sole solution to addressing years of systemic racial discrimination in public and private investments and lending in housing, but they are emblematic of the positive impact that a more robust and comprehensive public and private response to systemic racial inequities in housing and neighborhood investments can have.

 “Stable housing is important for creating and maintaining safe and functioning neighborhoods,” says David Thomas, CEO of Philadelphia Housing Development Corporation (PHDC). “For over 40 years BSRP has helped individuals and families relieve what can be overwhelming financial and mental pressure that occurs when you need necessary housing repairs but lack resources. The program has also helped reduce homelessness by keeping persons in their homes, preserve blocks and communities, and reduce blight.”

“Just as there is no one cause of crime there is no one solution,” said Mayor Jim Kenney. “Investing in our neighborhoods, as we do with PHDC’s BSRP program, strengthens those neighborhoods and, as we see in this study, reduces crime. Our challenge is to continue to find new approaches and resources to supporting community investment for programs like BSRP that stabilize communities.” 

John MacDonald, PhD, Professor of Criminology at the University of Pennsylvania was also an author on the study. The study was supported by the Leonard Davis Institute of Health Economics.


Penn Medicine is one of the world’s leading academic medical centers, dedicated to the related missions of medical education, biomedical research, and excellence in patient care. Penn Medicine consists of the Raymond and Ruth Perelman School of Medicine at the University of Pennsylvania (founded in 1765 as the nation’s first medical school) and the University of Pennsylvania Health System, which together form a $8.9 billion enterprise.

The Perelman School of Medicine has been ranked among the top medical schools in the United States for more than 20 years, according to U.S. News & World Report's survey of research-oriented medical schools. The School is consistently among the nation's top recipients of funding from the National Institutes of Health, with $496 million awarded in the 2020 fiscal year.

The University of Pennsylvania Health System’s patient care facilities include: the Hospital of the University of Pennsylvania and Penn Presbyterian Medical Center—which are recognized as one of the nation’s top “Honor Roll” hospitals by U.S. News & World Report—Chester County Hospital; Lancaster General Health; Penn Medicine Princeton Health; and Pennsylvania Hospital, the nation’s first hospital, founded in 1751. Additional facilities and enterprises include Good Shepherd Penn Partners, Penn Medicine at Home, Lancaster Behavioral Health Hospital, and Princeton House Behavioral Health, among others.

Penn Medicine is powered by a talented and dedicated workforce of more than 44,000 people. The organization also has alliances with top community health systems across both Southeastern Pennsylvania and Southern New Jersey, creating more options for patients no matter where they live.

Penn Medicine is committed to improving lives and health through a variety of community-based programs and activities. In fiscal year 2020, Penn Medicine provided more than $563 million to benefit our community.

Journal Link: JAMA Network Open