About dividing a model into objects properly

[Anonymous]

Hi everyone,

I'm modeling this castle made of grounds, walls, houses ...

I would like to know the better way to divide it into objects.

Should we think about it in matter of material ?

For example, the roofs do have the same material, the walls the same material ...

I'll use Substance Designer to make the materials and then export the model into UE4.

Thank you !

[Anonymous]

Is there anybody to reply ?

Thank you !