Many factors have been identified as elements of influence on ecclesiastical architecture in Nigeria. Therefore, this study
examined ecclesiastical architecture in Nigeria with a view to identifying the effect of Pentecostalism. Lagos was chosen as the study
area because it is arguably the most Pentecostal city in the world and the cradle of ecclesiastical architecture in Nigeria. Since the study
was explorative in nature, qualitative research methods were adopted in gathering the data and descriptive analysis was used. Findings
of the study showed that at the emergence of Pentecostalism the theology and liturgy which were major determinants of ecclesiastical
architecture underwent some epochal changes. Earlier practices transformed to evangelism with prosperity messages incorporating
African ceremonial functions dominated their theology and liturgy respectively. The leadership of the Churches became predominantly
indigenous and the construction of their buildings enjoys primarily local input in terms of construction method, labour and materials.
Different building types transformed to adapted Church meeting places. Church buildings became industrial buildings with clear long
span interiors because the Churches witnessed high population explosion. The study concluded that Pentecostalism has affected
ecclesiastical architecture in Nigeria in the areas of these findings not only as part of development but also as an intervention