While progress in HIV care has been remarkable over the past 40 years, and while two-thirds of people living with HIV in well-resourced areas are able to achieve a suppressed viral load, not everyone is benefitting equally. Unsheltered and unstably housed individuals face substantial barriers to viral suppression and optimal health. Reasons for these stark disparities in wealthy cities are numerous, interrelated and –despite local resources--consistently hard to overcome. The COVID19 pandemic has placed a renewed spotlight on the social and structural challenges faced by unsheltered individuals living with and at risk for HIV. This symposium will explore the role of housing in both the HIV and COVID19 pandemics. In particular, it will highlight recent findings from research and surveillance with the potential for use in health care delivery and public health practice.