Hi Tim,
Apologies for causing the confusion.With the first image I was just trying to show the lightmap density issue.The house geometries in the first images just has a detailed texture applied to it.However,there is separate Geometry attached to the facade of the building.For instance the windows ,the door frames e.t.c.
You mentioned scaling the UV’s.Mine are all at 4k.the same as the textures.Maybe that is the issue.I attached another image where you can see the simple building geometry more clearly.Thank you
Elbert