The Use of Local Materials for the Interior Quality of Swahili Building Design in Tanzania

Swahili architecture in Tanzania is recognized by spatial capacity to adapt environmental changes. This research explores the role of locally available materials in shaping the interior quality by focusing on functional, aesthetic appeal and supporting sustainable environment. A mixed-methods approach was applied which, involves field surveys, case study and interviews with different local professionals in building industry. Dar-es-Salaam was used as a case study area that was critically analysed to identify construction practices and applications of local materials in building interior spaces. A particular focus was placed on materials durability, aesthetic, ecological, environmental balance and thermal efficiency which seems to be a diminishing criterial in selection due to emerging contemporary construction technology and imported materials. This has resulted in changes of features of interior quality of many Swahili buildings. Over 70% of respondents have argued that the local materials not only enhance interior environmental performance but also sustain cultural heritage and support economy of individuals. However, local materials continued to be threatened by rapidly urbanization process, limited regulatory initiatives, and declining the transition of knowledge among the generations. The study recommends strategies for integrating local materials into modern construction frameworks, including policy support, training programs for fundi (local artisans), and community-driven construction initiatives. This will enhance environmental sustainability and improving construction method to safeguard the Swahili architectural identity. Using locally produced materials improves interior quality while also embracing sustainably and reasonably methods of designing modern Swahili architecture.