Attic tool

Yes more build tools to allow for building attics, skylight windows, and functional roof decor, and new roof types. Also roof rafters for attics and vents and crawl spaces. Pets with curious and obsessive traits can "investigate" vents and crawl spaces and maybe get stuck.

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We can build a room under the roof already, it's useless
I think you need building tips more than a tool.

And attics are not just for storage either!

In some countries, the attics are frequently used as a part of the living space, and it bugs me to heck that we can't do that in-game. For example, where I'm from: It's not uncommon to see houses that have two above-ground floors - one of which is the attic. The attic windows are not just for show!

An additional suggestion I have is that we also need a way to raise the roof a tiny bit to make space for at least a bed or dresser to fit in along the edges of the attic floor. Like half walls, but for the exterior directly below the roof. Please?

Ideally it would also be fully playable in there, but they're probably too afraid of our sims clipping into the roof. And animating it to account for all the possible roof angles probably seems like too much.

There are ways to fake a skylight and mansard roof, but I wish they'd add both anyway. It would be easier.

This sounds cool and you could have ghosts in your attic, I like the idea of animals investigating in there. Lots of potential gameplay!