How many floors do you put into most of your home builds?

Maybe, I should have asked as to why you choose to build the way you do.

I'm no amazing builder, but I feel like having more than a couple of stories can become a hassle or unrealistic in gameplay unless you're specifically playing sims living in a kind of mansion type house. That's just my opinion so I never build much taller than that. I also hardly ever build basements! I love them though, they can be so cool especially in public lots like clubs

One storey in the interior cuz stairs are a waste of time. They probably take like 30 sim mins to go up or down. XD

And I also don't like to toggle through the storeys.

Generally two, but it all depends on what I'm building. Going up, not out, saves precious lot space - important in view of the weensey lots we've been given. Vickies are at least two with basement, more if there's a tower or two involved. I just finished a helicopter facility in TS2 with one building having 4 levels: terminal on 1st, quarters for staff on 2nd, lower control tower level on 3rd, and the manned control area on the 4th. The tallest has been 7 levels (TS2 again) where I recreated a Victorian building in Bermuda using a copy of the plans. Not even the biggest lot in the game was enough, so the ends were a bit crimped. Needed the number of levels cheat, too.

I like at least 2 floors. I never liked basements and I don't like 1 floor houses. I usually like to build attics, although it is not very practical in sims 4. I create suburban builds, so I try to strive for 2-3 floors, although I have not yet mastered 3 floors and make it look good.

Darn didn’t see the 2 floor and a basement option! It’s hard for me to actually get up to 2 though but I’m trying! Creativity is hard sometimes

I like to build my basement(s) first, then go up.

It all depends on the needs of a specific sim and their aspirations. For example, as a family home I tend to make two or three stories depending on the amount of children.
Single sims get one story houses, usually in particularly odd shapes.

I usually do the ground floor with kitchen, living room, and all that. Then a second floor with the bedrooms and office and such.
Then I often add a basement with a bedroom for the teen, or the utility room or something like that.

Two stories is enough, Sims take forever, and rather navigate to the furthest items, like the toilet (Skip the downstairs half bath, to use a full one up stairs, down the long hall).