wikipedia說:
Urban Renaissance Agency (獨立行政法人都市再生機構 Dokuritsu gyōsei hōjin Toshi saisei kikō), also known as (UR, 都市機構, UR都市機構), is a semipublic Independent Administrative Institution, and is an agency responsible for Japanese housing. It provides housing at rates pegged to the market
即是要交市值租金的