Following the report of a problem with datpacking this set of apartments from SOMY, they were examined and the problems eliminated. There are four different styles of low wealth residential buildings plus a water tower. These have been updated using SC4PIM and the models have been centred using cogeo's Model Tweaker.
There are three different style of 2x5 growable lot - the original style made by SOMY, a set of lots with a LH corner and a set with a RH corner. There is also a set of 5x2 low wealth residential lots. All the lots are separate so you may remove any that you do not want.
There is a Cleanitol text file included as you will need to remove the original lots and models after you have bulldozed any existing lots from your cities.