African countries including Nigeria are enriched with heritage properties embraced with legacy and architectural values depicting sense of identity. They deserve to be conserved to future generations. However, the properties are continuously ignored and destroyed due to redundancy and injudicious decision. Hence, this paper aimed at reviewing decision-making models adopted mostly in developed countries for possible suitability in developing countries. Meta-analysis was conducted where eight decision-making models were deduced. Practical implications and limitations of the models were acknowledged. The findings were appropriately reviewed and harmonized to suit and enhance optimum quality of conserving heritage assets in developing countries.