Just add you would with the existing roof styles to extend the eave simply click and drag the small downwards facing arrow on the side of the roof.
How do you build a roof in sims 4.
Add a half hipped roof along one edge.
Build a smaller room on the roof about one or two squares from the edge of the building.
Houses coming soon.
If you like a more classic second empire look to your home you can try building a mansard roof.
Although it is entirely possible to get this to look good it looks nowhere near as attractive as using one of the new roof pieces.
Repeat on all four edges.
3 some ideas to get you started tower.
Do this in game using the half hipped roof.
One of the biggest problems with building a tower in the sims 4 was that you were often forced to use a 4 sided roof piece.
Best built on square or rectangular buildings start with a room on the roof level two or three squares in from the edge.