Mapping Housing Laws in the United States: A Resource for Evaluating Housing Policies' Impacts on Health.

Context: Safe, stable housing is essential to good health. Housing hazards, including mold, vermin, and lead, can contribute to the development or exacerbation of chronic illnesses such as asthma and neurological disorders. In addition, eviction has been associated with poor physical and mental health outcomes. There are many laws aimed at maintaining healthy housing, or protecting access to stable housing, but their impacts are mostly unknown. Policy: Using scientific legal mapping, the Center for Public Health Law Research (the Center) created legal data sets on state landlord-tenant laws, state fair housing laws, and city nuisance property ordinances. These data sets track the incidence and key features of these laws, creating legal data that can be used for evaluation. Some important elements of these laws include property maintenance duties; protections against retaliation; protected classes under state fair housing laws; discriminatory acts prohibited by state fair housing laws; types of conduct that constitute nuisance activity; and required nuisance abatement actions. Implementation and/or Dissemination: As of August 1, 2017, all 50 states and the District of Columbia have a state landlord-tenant law; all states except Mississippi have a state fair housing law; and 37 of the 40 most populous US cities have a local nuisance property ordinance. Evaluation: Evaluation of these laws is needed to determine their effectiveness and impacts and to spread the use of evidence-based policies. The creation of these legal data sets is the first step toward evaluation. Discussion: Law can play an important role in promoting healthy housing, but evaluating the law is essential to determining its impact. Tracking the prevalence and key elements of laws is an important first step in conducting evaluation. The legal data created by the Center can be used to evaluate the efficacy and impacts of state landlord-tenant laws, state fair housing protections, and city nuisance property ordinances.