I only have 3 data points, but every time I have used the convection feature at someone else's house, they had no idea it was a feature, or what a convection oven even does.
Edit to add: These were all in newer homes, so could be a more recent trend?
Both gas and electric ovens without convection are common in the US; in 12 homes I can remember, as a child and adult, in almost 50 years, only in the most recent have I had a convection (gas) oven. (All have had ovens.)
Are you under the impression that most Americans live in giant McMansions?
Gas ovens are common and so are electric, but I didn't have a convection oven until I owned my own home. It's not really worth it for most landlords to make this upgrade.
But then again, I’m sure you are right. Perhaps this is an easy tell - check to see if the oven has convection features. If so, the house was built for living, if not it was intended for flipping.
