Abstract
Purpose Studies related to biophilic design (BD) have not clarified the user's role in applying its elements and features to improve quality of life (physical and mental health). This paper aims to highlight the users' role (experience, practice, and advice) when utilising aspects of BD in the interior environment of modern houses (MH) in Jeddah, Saudi Arabia, as a case study. Design/methodology/approach A study of users' experiences was conducted through a qualitative approach by analysing semi-structured one-to-one interviews with a representative sample from Jeddah (12 heads of the family) using an adapted Biophilic Interior Design Matrix. An inductive approach was applied by extrapolating the users' role in employing BD elements in the MH's interior environment based on their experience in employing various biophilic elements. Findings The findings demonstrate the importance of the user's role when incorporating biophilic elements in living spaces. The levels of employment of BD elements of various kinds in the interior environment of the MH as a whole are considered high. A high percentage was observed regarding the availability of BD elements in the 40-59 years age group (87%), and a relationship was observed between housing type (villas vs apartments) and availability of BD elements. Additionally, a relationship was observed between the use of a professional designer when designing the house and the availability of biophilic elements. However, the sample did not have a grasp of several BD concepts. The application is generally made without knowing the positive impact on mental health. The user matrix was compiled as a reference that reflects the features and elements that are easily enjoyed in activating BD and enhancing the users' role in raising the level of BD in their homes. An initial classification of BD features was elaborated regarding the physical structure (PS) of a building, features regarding the user under control (UUC) and features regarding the user out of control (UOC). Research limitations/implications The classification was preliminarily based on PS, UUC, and UOC. Future research is required to confirm what has been communicated through advanced and in-depth research for housing analysis to confirm and enhance the user's role. This approach is a quick alternative solution to employ biophilic elements. Originality/value The authors focussed on the immaterial aspect of BD in interior spaces from the user's experience. BD-related studies have focussed on the physical aspect of architectural space.