The PRB Kalabu estate was established in 1981 with 50 flats of timber single and duplex houses. Additional flats were built in 1999, 2004 and lately 2018. Today the estate has a total of 109 flats. The estate is located on two separate leases with 25 flats accessible from Jale Street and 84 flats accessible from Uci Place Road. The estate also has a community hall.