My wife and I placed an offer on a house in DFW. The house was built in the 70's but was extensively renovated in 2018 and appears in great shape overall. Due to age, there are a few spots around the home's perimeter where the slab has visibly settled (typical for the area, and we will be getting this checked out during the option period), and coupled with a new sod job throughout the yard, some sod has been installed where the weep holes in the bottom course of brick are partially obscured by the surrounding grading. The side yards are our biggest point of concern, as they are relatively flat across so there is little opportunity for regrading. With this in mind, does anyone have experience with added drainage or some other retrofit along the slab edge to address this condition? Before moving forward, we want to have an idea of what we are dealing with potential work-scope wise.

We had a similar issue and you can grade the yard in a flat V shape away from the house. At the low part (bottom of the V), bury sand/gravel/drainage pipe with holes.

Should be a fairly easy fix.