This study is the first to document suicidality among chronically homeless people with alcohol problems (N = 134) and examine its trajectory following exposure to immediate, permanent, low-barrier housing (i.e., Housing First). Suicidal ideation, intent, plans, and prior attempts were assessed at baseline and during a 2-year follow-up.

Baseline suicidal ideation was over four times higher than in the general population. Two-year, within-subjects, longitudinal analyses indicated severity of suicidal ideation decreased by 43% from baseline to follow-up. Significant decreases were also found for intent and clinical significance of ideation. No participants died by suicide during the 2-year follow-up.