These models utilise low poly with a mix of soft and hard edge creases.
For extra detail I've used height/normal anchor points in Substance Painter.
Some experimentation around geometry vs normal mapping so it's very possible that these could be crunched further in vert count.
Texel count is limited to 4px/cm for door, window and other set dressing. Tiled textures are currently have a higher density, but look to be reduced.
I need to look at the necessity for door/window furniture and fixings as well as more specific point of weathering and wear.