To accommodate the ever-increasing enrollment, Finkel fund-raised for and constructed four new buildings in addition to the original yeshiva building constructed by Reb Leizer Yudel in 1949. He assigned separate "battei medrash" (study halls) for each group of students, making one for Israeli students, one for Americans, one for those who wished to study without a daily "shiur", and so on. As enrollment continued to climb, several students of the main "maggidei shiur" (lecturers) began delivering "shiurim" in English, and Finkel raised the funds to open a new "beis medrash" in 2006 for these "shiurim" too. Yet another "beis medrash" was built in recent years. The Mir also opened a "yeshiva gedola" for Israeli students in the Brachfeld neighborhood of Modi'in Illit where Finkel gave "shiurim" and occasional "shmuessen" (musar talks), and a "yeshiva ketana" in the Ramat Shlomo neighborhood of Jerusalem.