Yes, I do believe they are crabapple. Or maybe just a flowering crab tree? I find they look similar but the difference is the flowering crab tree doesn't produce fruit, it's just really pretty to look at. My parents have a flowering crab tree in their yard, very nice. There are a couple of "apple" trees on the empty lot beside mine and I've never noticed if they're crabapples or not. I'll take a look this summer how it flowers.