This study investigates the effect of house-types on the assessment of residential quality in Osogbo, Nigeria. Through a questionnaire survey, this study employs a stratified systematic sampling method to select 406 (10%) households from three (3) major residential districts of Osogbo. Data are analyzed using descriptive statistics and one-way analysis of variance (ANOVA). The study showed that 80% and 14.8% of the respondents live in contemporary vernacular houses, that is, the

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... you" house, and western apartment houses, respectively. Meanwhile 2.5%, 1.5%, and 1.2% of the respondents live in duplexes, single family houses, and traditional courtyard dwellings, respectively. This result suggests that in Osogbo, the Yoruba traditional courtyard house-type is gradually being replaced by the contemporary vernacular house and the western apartment house-type. Confirming the linear relationship and level of significance among the variables, the ANOVA Test F-value is 2.17 (where po0.05 probability level), which indicates that house-type significantly affects the assessment of residential quality in Osogbo. The need for the government and others involved in housing delivery to consider the appropriate house-types for and residential preferences of end-users within different sub-cultures when planning for future housing in Nigeria is highlighted.