I'm really frustrated that adding doors and fireplaces contributes to the build limit.

I've basically figured out the perfect layout for how I would like my house to be, but I cannot add extra doors or a fireplace because my build limit is maxed. Arguably, doors and fireplaces aren't habitable spaces, they're just additions, so it kind of sucks that you have to pick between a door or a full-sized room... it just makes no sense.

I'm guessing 15 is the max too, and there's no way to increase the limit?

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EDIT: I can confirm they don't actually contribute toward the build limit, it's just bugged. If you have reached max limit and try to add doors/porches/fireplaces on, it won't work. You need to remove a room first, add what you need to add, then add the room back on.