A tropical hot humid climate provides high humidity that influences the occupant's comfort. This study highlights a comparison of physical measurements and perceptions related to thermal comfort, indoor air quality, and sick building syndrome (SBS) in tropical humid climate buildings. The research method used ASHRAE 2017 and analysis using SPSS 24 by two analytical models, i.e., Model 1 and Model 2. The Model 1 included measurement data of independent variables T, RH, V, and CO₂, and SBS dependent variable, while the Model 2 used perception data of independent variables T, RH, V, and QA, and SBS dependent variable. The study found the conditions were unsuitable with ASHRAE 2017, however, the new SBS index model for the hot-humid tropic has been established. The average temperature was 29.4-31.3ᵒC, the perception of 'neutral' was responded by 50.6% of all respondents, 36.7% stated 'warm' and 7.6% stated 'hot'. The average relative humidity was between 77-82.4%, but about 50.6% of respondents declared 'neutral', only 8.9% declared 'slightly damp', and 2.5% stated 'damp'. The test results showed Model 2 performed the cyclical effect on SBS, in contrast, Model 1 had no significant effect on SBS because of the varied adaptation of occupants.

The number of housing needs for low-income people continues to increase every year, and the government and the private sector create affordable housing with decent housing according to Indonesian healthy housing standards. Dliko Indah Housing Salatiga is housing that was planned and designed in the form of housing units of various types that were built in the 1980s and still exist today. Dliko housing has been in existence for more than 30 years, and has undergone physical changes in various design elements. This condition is suspected of having several driving factors for residents to change it. Through the post occupancy evaluation (POE) method approach, it is hoped that the answers to the occupants' motivations can be obtained as to why they made these changes and at the same time obtain the driving factors. The aim of this research is that the results can be used as an evaluation in planning and designing similar housing developments in the future. The research method used is a qualitative rationalistic research approach, using stratified random sampling. Related theories and journals are used as a tool to analyze as well as direct research, and to obtain field data. The final result is a variation in the percentage of change rates for each of the elements that make up a simple home design such as: changes in KDB, building plans, functions, facades and changes in materials. These changes are the demands for Comfort, Security, and Recognition.