Informal child-care centres have sprung up in urban informal settlements to meet the growing demand for child care as more women engage in employment. However, childcare providers running these centres have little or no training and facilities are below standard putting children at risk of poor health and development. Our study aimed to co-design and test the feasibility of a communities of practice (CoP) model where trained community health volunteers (CHVs) provide supportive assessment and group sessions to build skills and improve practices in informal child-care centres.