Welcome, what a small world. I am a Jax native myself! (Now living in coastal North Carolina.) Many family members are still there, my uncle still runs our family's 4th generation fence business there to this day.
My concepts use element of a house (for obvious reasons), fence (To show the multiplicity of things you clean) water, (geographical reference)
I really like your concepts, I'm trying to figure out what we need to do to make them exactly what I'm looking for. It's hard to describe!
I'm actually really close between #37 and #39. I think an issue I have with #37 is the charcoal, it makes it look dark. I actually really like the look of it, but I feel like it's not quite right for a "clean" logo, if that makes any sense.
An issue I have with #39 is the water, it sort of looks like a mustache. I like the look of the text aesthetically, but I agree with Rachel that we don't want the "First Coast" to be the dominant part of the logo for the simple reason that there are a lot of other "First Coast" businesses around here.
I'm sorry I can't be more specific, it's so hard to describe in detail how you feel about little nuances.