Knowledge translation and implementation of housing first in Canada: A qualitative assessment of capacity building needs for an evidence-based program.

•Capacity building needs for communities implementing Housing First (HF) include clarification of HF principles, clinical skills, landlord engagement, client prioritization, and fidelity assessment.•An Interactive approach to Knowledge Translation approach can facilitate the real-time utilization of evaluation findings.•Qualitative approaches to training and technical assistance (TTA) needs assessments can ensure that TTA activities are tailored to local implementation stage and contexts.