"The next generation of buildings should support human health and productivity as well as the highest level of environmental sustainability"

Human-Building Integration Lab (HBI Lab) is in the Building Science Program in the School of Architecture at the University of Southern California located in Los Angeles, U.S. We are conducting quality research focusing on comprehensive study of advanced building technologies and design to promote building performance in energy efficiency, net zero energy, indoor environmental quality (such as thermal, air, acoustic and lighting conditions), occupant health and productivity. Our lab consists of Professor Choi, and multiple MS and PhD students in Building Science, as well as post-doctoral researcher and visiting scholars. Our lab's research focuses and activities can be found in greater detail under the "Research" tab.

Dr. Joon-Ho Choi is an Associate Professor of Building Science and Associate Dean of Research and Creative Work in the USC School of Architecture. Prior to taking the position, he worked as an assistant professor in the Department of Civil, Architectural, and Environmental Engineering at Missouri University of Science and Technology. He earned his Ph.D. degree in Building Performance and Diagnostics at Carnegie Mellon University. He also received his Master’s degree in Architecture at Texas A&M University in the U.S., and a M.S. degree in Architectural Engineering at Yonsei University in Korea.


Dr. Choi's primary research interests are in the areas of advanced controls for human-building integration, sustainable building design/performance, comprehensive post-occupancy evaluation, and indoor environmental quality. 

Director: Professor Joon-Ho Choi, Ph.D., LEED AP


Congratulations !!!

As of April 30, 2019, Dr. Choi is promoted to the rank of Associate Professor with tenure at USC.

He is also appointed as the Associate Dean of Research in the USC School of Architecture. 

Dr. Choi's hyper scholarly activities are expected with more academic freedom given to him!!

Congratulations !!!

Dr. Choi received a

National Science Foundation Grant to organize a National Workshop on Architectural Faculty in the U.S.


Dr. Choi's research workshop proposal, entitled "National Workshop on Architectural Faculty in Environmental Sustainability Research" has been awarded a National Science Foundation Grant. This workshop will be the first research workshop funded by the NSF. Dr. Choi is the Principal Investigator, and this workshop will be supported with $50,000. This workshop will be held on May 28 and 29 at Ryerson University in Toronto, Canada. About 40 architectural faculty in the U.S. will be invited to discuss cutting-edge research topics in Architecture while identifying any research hurdles available in architect. Anyone interested may find a detailed schedule and application in the following links (Application deadline: April 24, 2019)

- Application form: https://drive.google.com/open?id=1l22rKBiGz0gBwzpXKNjg-XWMI9kkWsg1

- Schedule: https://drive.google.com/open?id=1E5OGQZ8harBvVRXjBQHA69JSPZh7l_s7

Congratulations !!!

Dr. Choi received a

Environmental Protection Agency Research Grant!


Dr. Choi's research, entitled "Occupant Eye Pupil Size-Driven Lighting Control As a Sustainable Indoor Environmental Control Strategy in a Built Environment" has been awarded an  Environmental Protection Agency - P3 grant in January 2018. 

Dr. Choi is the Principal Investigator, and this research will be sponsored by the end of 2018. 

Congratulations !!!

Dr. Choi received a

National Science Foundation Research Grant !


Dr. Choi's research, entitled "Human-Building Integration: Bio-Sensing Adaptive Environmental Control for Human Health and Sustainability" has been awarded a National Science Foundation Research Grant in August 2017. Dr. Choi is the Principal Investigator, and this research will be supported for three years with $300,000. 

The HBI Lab participated in the USA National Science and Engineering Expo in D.C. 

EPA's National Sustainable Design Expo as a part of the USA National Sci. and Eng. Expo was held at the Washington Convention Center on Apr. 7 and 8, 2018.  The HBI Lab participated and presented the EPA-NSF sponsored Human-Building Integration project. It was greatly successful with the "world-class" lab members. About 300 visitors with many children came by and gave us a lot of positive comments and questions. Go HBI! Go Trojan!!

Dr. Choi is invited to the National Chin-Yi University of Technology in Taiwan by Professor Fu-Jen Wang, a former president of the ASHRAE Taiwan Chapter. Dr. Choi will visit the University located in Taijun in mid-October 2018, to give a seminar to Professor Wang's research group. Dr. Choi will talk about one of his research themes, the Human-Centered Environmental Control and Cyber-Physical System. After the visit, he will attend the 2017 Healthy Building Conference to be held in Tainan, a southern part of Taipei. 

Invited Seminar at the Technical University of Denmark, Copenhagen, 2017

Completed the first phase of Dr. Choi's immersive virtual environment study: Investigation of the Physiological Differences between Immersive Virtual Environment and Indoor Environment in a Building

The HBI Group has started a collaborative project with the Virtual Reality Research Group in the USC's Institute for Creative Technologies. Dr. Shin, who is an Associate Researcher and Environmental Psychologist, and Dr. Choi will start a research project, entitled "Impacts of Virtual Reality on Human Factors in a Built Environment," which is sponsored by the V.R. Research Foundation and one Korean Industry Partner. 

Invited Seminar at the Korea Institue of Civil Engineering and Building Technology (KICT)

In November 2017, Dr. Choi gave a talk to the researchers at KICT about "User-Centered Building Environment in the Context of Smart Cities."

Dr. Choi's group win Young researcher Best Paper Award at the 10th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings in Bari, Italy.

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Dr. Choi was invited to the 2019 International Conference on Human Dimension of Building Energy Performance, held in Venice, Italy, as a Keynote Speaker.

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VOICE OF AMERICA interviewed Dr. Choi and reported the impact of his research for workers' personal comfort and wellbeing.


Dr. Choi was invited to give a research talk to the high school students of the STEM Academy in Hollywood. 


Dr. Choi's Human-Building Integration Research was reported in the Los Angeles Daily News and the USC Press to introduce as a top-tier Science/Technology



A series of invited keynote speaks in summer 2018.

Dr. Choi was invited to three prestigious international conferences and seminars in the summer of 2018. He was invited to the forum of Human-Centric Indoor Climate at the 2018 Room Ventilation conference in Helsinki, Finland. He presented a topic of "How to enhance users' perception on indoor climate." Also, as an invited speaker, he was invited to the NIH/NSF Health in Buildings Roundtable - Health-Centered Buildings conference in Maryland, and to the 2018 Aslla symposium, entitled "Speculating the Future Smart Things for Instrumenting Empathy and Social Intelligence," in Korea. Dr. Choi shared his recent HBI research outcomes with a large group of interdisciplinary scholars.  



Successful Seminar for K-3 students!!

Dr. Choi provided a research seminar to the third-grade classes of an elementary school located in Southern California. The students well engaged and were quite interested in the architectural science research with numerous questions!!  (Jan. 2018)

Congratulations! Ten journal papers of Choi's HBI Lab have been published in Energy and Buildings, Building and Environment, Sustainable Cities and Society, and Indoor and Built Environment journals in 2017 and 2018.


  • Choi, J.*, Lee, K.S.  “Investigation of the feasibility of POE Methodology for a Modern Commercial Office Building,” Journal of Building and Environment.V. 143, pp. 591-604, 2018. [link]

  • De dear, R.* Choi, J., et al. "Development of the ASHRAE Global Thermal Comfort Database II,” Building and Environment, V. 142, pp.502-512, 2018. [link]

  • Martinez, A., Choi, J.* “Analysis of Energy Impacts of Façade-Inclusive Retrofit Strategies, Compared to System-only Retrofits Using Regression Models,” Energy and Buildings, , V.158, pp. 261-267,2018. [link]

  • Choi, J.*, Moon, J. Impacts of human and spatial factors on user satisfaction in office environments, Building and Environment, v.114, pp. 23-35, 2017. [link]

  • Choi, J.*, Yeom, D. Study of data-driven thermal sensation prediction model as a function of local body skin temperatures in a built environment, Building, and Environment, v.121, pp.130-147, 2017. [link]

  • Choi, J.*, Yeom, D. Investigation of the Relationships between Thermal Sensations of Local Body Areas and the Whole Body in an Indoor Built Environment, Energy and Buildings, v.149, pp. 204–215, 2017. [link]

  • Choi, J.* Investigation of the correlation of building energy use intensity estimated by six building performance simulation tools, Energy and Buildings, v. 147, pp. 14-26, 2017. [link]

  • Martinez, A., Choi. J.* Exploring the potential use of building facade information to estimate energy performance, Journal of Sustainable Cities and Society, 2017. [link]

  • Yeom, D., Choi. J.*  Investigation of Physiological Differences between Immersive Virtual Environment and Indoor Environment in Building, Journal Indoor and Built Environment, 2017. [link]

 (*: Corresponding Author)