It also correlates quite well to available flat land for greenfield development running dry in major metro areas like the non-antelope valley side of LA county.

It also correlates quite well to available flat land for greenfield development running dry in major metro areas like the non-antelope valley side of LA county. And what do you know, prices are much cheaper on the other side of the San Gabriels where there is room to develop more housing. Without room for greenfield, infill needs to be legalized, or prices rise such that the only winners are the high income people able to participate in the now buyer constrained housing market like we see today.