The main objective is to present the results of a survey on the habitability conditions of homes and the urban environment in the face of the social confinement caused by COVID 19 in Tijuana. It is assumed that the effects of the main measure of containment of the pandemic, the "stay at home", have more pernicious effects in homes that reside in houses with worse living conditions and less consolidated urban environments. The survey questionnaire included, in addition to the dimensions that are traditionally used in the study of habitability, various items on the implications of house confinement by concentrating activities that are normally carried out outside it, such as work or education, as well as its effects on the economic conditions and problems of families. The results show that, although the habitability conditions of the houses in Tijuana are mostly acceptable, the confinement has evidenced greater negative effects in houses of smaller dimensions and located in popular neighborhoods or that were identified as priorities due to their degree of vulnerability social to COVID 19.