“…Therefore, the present study centers on how changes in social behavior and reduced relocation, mobility, and community engagement during the COVID-19 pandemic affect correlations between regional housing markets. Changes in the correlation of regional housing markets result in changes in systemic risk, which is an essential factor in house price volatility behaviour and housing return volatility, especially when significant events occur ( Zhu et al, 2013 , DeFusco et al, 2013 , Wang and Zong, 2020 , Bago et al, 2021 ). Therefore, after verifying the correlation changes in the regional housing market, this paper will examine whether the regional housing return volatility (risk) will also change.…”