Finding features based on total overlap of another feature class using ArcGIS Pro

Question

I have 2 polygon feature class's (A and B) that overlap each other.

I want to select all the polygons of feature class A where the total overlapping area of feature class B polygons is less than 10m2 using ArcGIS Pro.

There may be multiple polygons overlapping

I was able to do this when there is only 1 overlapping by doing this:

1. Union of feature class A and B
2. Clip the union output with Class A feature class as clip feature
3. Definition query on the output to only show polygons with an area less than 10m2
4. Select by location on feature class a with step 3 output as the intersecting feature

But I am not sure how to do this when there are more than 1 polygons of feature class B overlapping feature class A

Answer 1

Since you are not concerned with which of the B geoms overlap the target A geom, you might try a different approach:

1) Calculate the area of each feature in A -> OrigArea

2) Get the difference of A and B (using B as the overlay) -> Difference

3) Calculate the area of each feature in Difference output -> NewArea

4) Compute Delta = OrigArea-NewArea

5) Join the Difference.Delta column back to A and select where Delta < 10m2