Multifunctional Space Conversion and Environmental Design in Modern Interior Design

In order to solve the contradictory nature of the limitations of small house space and multiple functional needs, this paper actively explores the variable space planning strategy in interior design. The environmental design scheme is proposed to realize the indoor ecological functional needs by utilizing space design with minimum energy consumption. The analysis of the functional needs of residential users reveals that it is feasible to meet the functional needs of different groups and different stages of residential use by dividing and combining indoor functional spaces. According to the results of a survey in a first-tier city, the average expectation of bedroom and living room area for 30-70m² houses is 20.7m² and 15.8m² respectively, which means that when small houses are designed, the important functional spaces such as bedrooms and living rooms under the limiting dimensions are prioritized to be combined. The results of the case study of four local houses of different sizes verify the effectiveness of the proposed strategy. 92.28% and 94.54% of space utilization is achieved in house 1 and house 2 respectively, while the energy efficiency of house 4 reaches 61.42%.