I dont entirely agree with drain but I would say that both of the perspectives he gave especially isometric view are 2 of the most commonly used.For a house they are even more so but you could also do something like LttP:
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or this which I think you were going for on the 2 drawings on the right:
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It's not only in pixel art, though. There are only really two ways you can look at perspective. What's often called as 'isometric' is actually 'orthographic'. Any drawing without a vanishing-point is considered an orthographic drawing.

I just used the term 'isometric', because it's definitely more commonly used in pixel art and is a term very familiar to most pixel artists.
@Xer0bot Doing orthographic drawings are definitely much simpler than doing a drawing with a vanishing-point. If you're doing a house, starting with a box definitely helps.

Building off a base will definitely make your life easier.