<p>Housing is among the basic necessities of life after food and clothing, particularly in urban areas. This study examined the sustainability of housing affordability in the medium-sized town of Fitche, the seat of the North Shoa Zone in the Oromia Region, Ethiopia. Primary data was collected from 364 respondents of two residential neighbourhoods: Commando and Fitche-Gora. The study adopted a multi-criteria decision-making technique to investigate sustainable housing affordability by taking into account the sustainability pillars: economic, social, and environmental factors. The results revealed that the pillars of sustainability were the factors determining housing affordability, although conventional economic criteria also played a significant role. The study results revealed that Commando was identified as a better residential alternative based on economic and socio-environmental factors, including the house price in relation to income, house rent in relation to income, housing quality, access to employment, schools, and transportation services. The study informs local governments and stakeholders to consider the mutual relationship between sustainability and housing affordability. It contributes towards addressing the ambitious goal of Sustainable Development Goal 11, which aims to ensure sustainable cities and communities.</p>