0001628063 2021-12-22 2021-12-22 0001628063 us-gaap:CommonStockMember 2021-12-22 2021-12-22 false 0001628063 8-K 2021-12-22 SERITAGE GROWTH PROPERTIES MD 001-37420 38-3976287 500 Fifth Avenue Suite 1530 New York NY 10110 212 355-7800 false false false false Class A common shares of beneficial interest, par value $0.01 per share SRG NYSE 7.00% Series A cumulative redeemable preferred shares of beneficial interest, par value $0.01 per share SRG-PA NYSE false