IMPORTANCE The root causes of violent crime in Black urban neighborhoods are structural, including residential racial segregation and concentrated poverty. Previous work suggests that simple and scalable place-based environmental interventions can overcome the legacies of neighborhood disinvestment and have implications for health broadly and crime specifically. OBJECTIVE To assess whether structural repairs to the homes of low-income owners are associated with a reduction in nearby crime. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study using difference-in-differences analysis included data from the City of Philadelphia Basic Systems Repair Program (BSRP) from January 1, 2006, through April 30, 2013. The unit of analysis was block faces (single street segments between 2 consecutive intersecting streets) with or without homes that received the BSRP intervention. The blocks of homes that received BSRP services were compared with the blocks of eligible homes that were still on the waiting list. Data were analyzed from December 1, 2019, to February 28, 2021. EXPOSURES The BSRP intervention includes a grant of up to $20 000 provided to low-income owners for structural repairs to electrical, plumbing, heating, and roofing damage. Eligible homeowners must meet income guidelines, which are set by the US Department of Housing and Urban Development and vary yearly. MAIN OUTCOMES AND MEASURESThe main outcome was police-reported crime across 7 major categories of violent and nonviolent crimes (homicide, assault, burglary, theft, robbery, disorderly conduct, and public drunkenness). RESULTS A total of 13 632 houses on 6732 block faces received the BSRP intervention. Owners of these homes had a mean (range) age of 56.5 (18-98) years, were predominantly Black (10 952 [78.6%]) or Latino (1658 [11.9%]) individuals, and had a mean monthly income of $993. These census tracts compared with those without BSRP intervention had a substantially larger Black population (49.5% vs 12.2%; |D| = 0.406) and higher unemployment rate (17.3% vs 9.3%; |D| = 0.357). The main regression analysis demonstrated that the addition to a block face of a property that received a BSRP intervention was associated with a 21.

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Rent burdens are increasing in U.S. metropolitan areas while subsidies on privately owned, publicly subsidized rental units are expiring. As a result, some of the few remaining affordable units in opportunity neighborhoods are at risk of being converted to market rate. Policy makers face a decision about whether to devote their efforts and scarce resources toward developing new affordable housing, recapitalizing existing subsidized housing, and/or preserving properties with expiring subsidies. There are several reasons to preserve these subsidies, one being that properties may be located in neighborhoods with greater opportunity. In this article, we use several sources of data at the census tract level to learn how subsidy expirations affect neighborhood opportunity for low-income households. Our analysis presents several key findings. First, we find that units that left the project-based Section 8 program were – on average – in lower opportunity neighborhoods, but these neighborhoods were improving. In addition, properties due to expiry from the Section 8 program between 2011 and 2020 are in higher opportunity neighborhoods than any other subsidy program. On the contrary, new Low-Income Housing Tax Credit (LIHTC) units were developed in tracts similar to those where LIHTC units are currently active, which tend to be lower opportunity neighborhoods.