The effects of climate change on architectural design and the built is worrisome issue. Flooding, wind storm among others drastically affects buildings in the state. This sometimes leads to building failures and in extreme cases, complete collapse. This research employed the use questionnaire to analyse the impact of climate change on architectural design and the built environment. The data collected were analyzed using percentages. The study found that climate change and the effect on building the mean of > 2.50 in the items entered and the standard deviation < 2.00 justify that the respondents strongly agree on the direct relationship between climate change and building in Rivers State. The study climate change impact on architectural design and the built environment in rivers state. The research recommends the need for building professionals to obtain basic climatic data from meteorological stations nearer to their proposed site and analyze such data for proper architectural design and to enhance management of the built environment.