of course, it could have a walk-out, for that potential fire.
Even though that would allow you to count the bedroom and any finished rooms in the basement in the square footage... I, personally, would not include the basement square footage... I believe in under promising and over-delivering! You never want someone to be disappointed, when viewing your home!
If this concerns sqft when placing the home in the MLS, all MLS's have different Rules. I'm not familiar with Midland's MLS.
BTW, I'm a Northwood area brat myself.
Your linked info was also very helpful for me here in Chicago regarding classifying a 1.5 vs 2 story home. Every home I've owned is/was pre-1930s and looks like a 1.5 (i.e. this picture and web ref). However, not all of them are/were brick bungalows. As I did research on this OP home, I discovered it is a "side-entrance Colonial". My WS home in many respects is almost the same as the OP house which creates doubt for me as to whether it is a 1.5 or 2 story.
I fought with the appraiser on my stucco farm-style LGP home. He said it was a 1.5 and I said 2 story because the only bathroom was upstairs with all the bedrooms. That home was similar to my previous 1.5 story BF stucco farm-style except BF's bedrooms and bath were on the first floor. The home before that was a traditional 1.5 story brick bungalow.
So, although I know exactly how to calculate sq ft, the number of stories is still questionable - especially when dormers are added. Your information was a different way at classifying it by separating out "style" completely.