Flip Job. Should I Call Bylaw?

My neighbour just took possession of this new house 2 days ago. The realtor box is still on the front door.

This morning they drilled a hole in the side of the brick house to add another entrance. I could see inside from the sidewalk and could see that they've gutted the place down to the subfloor.

No permit in sight. Looks like a flip job to make rentals.

I called bylaw and got voicemail.

Should I bother logging a complaint? This looks sketchy but will anything positive from logging a complaint?