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Architectural heritage conservation in recent years has hinged on conventional methods and has failed to recognize innovative methods and emerging technologies. Consequently, in Nigeria, suboptimal conservation work results in the continual deterioration of architectural heritage, leading to the loss of heritage and its values and significance. The study, therefore, sought to examine challenges and prospects for implementing innovative techniques in the conservation of architectural heritage in Nigeria. The study examined three heritage conservation interventions in Nigeria, focusing on the applicability of innovative conservation methods for documentation, diagnosis, and treatment of deterioration of architectural heritage. Questionnaires were administered through purposive sampling to 40 heritage conservation professionals, with 31 (77.5%) completed and returned for analysis. A Cronbach’s alpha reliability test value of 0.76 established the validity of the research instrument. The findings affirmed that heritage professionals have low familiarity (mean value of 2.19) with innovative techniques for conservation of architectural heritage. Of the respondents, 41.9% had gained a minimal level of technical knowledge of how to implement innovative techniques in conservation interventions. Improving the performance of conservation interventions also ranked highly as a potential strength of implementing innovative techniques. Conclusively, there is a need to improve advocacy and training in innovative conservation techniques based on their ability to characterize architectural heritage materials and investigate their chemical composition, microstructure, and morphological features.