Sustainable Innovation in the Creative Industry: A Participatory Mobile Methodology for Interior Design Spatial Representation

Abstract

Spatial representation is a cornerstone of the creative interior design industry, yet traditional static mediums often result in material waste and significant miscommunication between designers and occupants. This paper proposes an empirical evaluation framework that utilizes a user-centered mobile application prototype as a proof-of-concept to foster methodological dialogue through participatory design. Grounded in the emerging framework of Human-Building Interaction (HBI), the study evaluates how interactive digital tools can reduce cognitive load and enhance decision-making accuracy. Following an expert heuristic evaluation (N=3) that demonstrated substantial agreement (K=0.578), usability testing (N=10) based on ISO 9241-11 standards showed high effectiveness (90.2%) and efficiency (89.85%). A comparative pilot study indicated that mobile interactivity can enhance spatial comprehension and user agency within exploratory consultation settings compared to traditional static methods. By providing rigorous metrics for engagement, this research presents a scalable prototype that highlights both the potentials and accessibility barriers of digital-first workflows as digital catalysts in design practice.