Abstract:Domestic interior design products are purchased through a decision process that is more complex than the purchase of many routine consumer goods because the decision involves functional requirements, aesthetic preferences, budget constraints, social visibility, perceived quality and long-term use. This paper examines the principal factors that influence consumers at the five commonly recognised stages of decision-making: problem recognition, information search, evaluation of alternatives, purchase decision and post-purchase behaviour. The study adopts a descriptive and conceptual research design based on secondary literature in consumer behaviour and marketing. The analysis indicates that personal needs, family and social influence, cultural preferences, product attributes, brand image, price-value perceptions, digital information sources, retailer or designer interaction, convenience and post-purchase support may operate differently across the stages of the decision process. In the context of domestic interiors, the importance of the home as an expression of lifestyle and identity also makes symbolic and social considerations relevant. The paper does not claim statistically significant effects because no primary dataset or inferential test results are available in the present study record. Instead, it develops a stage-wise framework that can guide future empirical research and help interior-product marketers, retailers and designers understand how consumer needs are translated into final purchase and satisfaction outcomes.