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Dakaliis a unique feature that plays a functional role in the Hausa Vernacular Architecture (HVA). However, events have revealed a gradual extinction from the streetscape due to contemporary changes in the cityscapes and the general physical development with the concomitant effect of reduction in the performance of the expected function in buildings. This paper focuses on the enumeration and documentation of buildings with or without this significant feature. It also appraises the attendant contemporary architectural design-shift. The paper adopts quantitative research approach; purposive sampling and Content analysis method in the selection of potential respondents and review of related literature respectively. This was complimented with the conduct of field survey, selective interviews and observation. Information extracted therefrom was descriptively presented. Findings revealed that out of the total of 235 selected samples, 50 buildings (about 21%) reflects the HVA features; only 14 buildings (about 5.95%), though with retained feature HVA like the Dakali, but have significantly lost the features and transiting towards the contemporary/modern trends; while, 171 (about 72.7%) of the buildings in the study area have completely been transformed. The paper concludes that there is the need for the identification and comprehensive documentation other HVA features for posterity, so as not to allow their total loss without any form of record of their historical existence, due to fast changes been experienced arising from the advent of innovative design, challenges of rapid rate of global urbanization and the trending break-through in technological advancement within our urban/city settings

This paper investigates the impact of modern and contemporary trends on an eighty-seven years’ old mosque in Jos built in the typical Hausa Vernacular Architectural style, as well as the extent to which its vernacular features have been lost and/or retained. The study focused on selected architectural features which do not essentially affects the performance of the primary mosque's functions. A qualitative survey was adopted using case study approach and complemented with content analysis of related literature reviewed to extract information on the challenges of restoration and preservation or conservation of the key features of traditional Hausa Architecture on the Mosque buildings in the study area of Jos, Plateau State, Nigeria from the randomly selected traditional/indigenous builders and practicing architects. The Yandoka Street Mosque was purposively selected as a case study, because of its historical antecedence, religious and communal attachment, as well as its socio-political and cultural relevance in the study area. Information was collected using the unobtrusive observation method and were descriptively presented in the form of layout plan, material deduction, construction techniques and technology adopted for the mosque’s construction. Findings shows that, the influence of the identified key factors have become a threatening phenomenon to the survival of the preservation and conservation historical values and heritages of Hausa mosque architectural style. The paper advocates preservation and conservation of the original mosque architectural style from the point of view of sustainability and made recommendations towards the preservation, development and execution of strategies for branding, national identity and protection of value systems for the public good