You're making a common mistake by using the neighborhood as a guide. It's not. Q1 is exceptional - and that is a nation scale, not for the market or even the state. Unless you're appraising a 5 million property with low land value, it's not a Q1. Most appraisers have never appraised one.
Meta gave a great analogy of the Q ratings
Q1= "Is there's a bigger, better, or more expensive material I can get in place of this one here? Seriously, I've got a lot of coin and I can send my jet to Japan for a toilet seat if that's what it takes. Are you sure we can't resurrect this Frank Lloyd guy...his stuff is the shizzle." You're hiring 1%'er craftsman from around the country, at least, to do a lot of the specialty work. If you can see drywall somewhere a mistake has been made.
Q2= "I've got more money than sense, but just barely." Nothing you can touch in a C2 home can be sourced at a home depot and the guys standing around the front looking for work don't have the skills to execute many of the construction methods and materials being used.
Q3=Really nice residential construction. Fundamentally, the materials and methods are no different from a tract home. There's a little more effort on design. Materials can be mostly be sourced locally, maybe not from home depot, but from from a nice specialty store in the next big city over is no problem. The home depot crew can do most of the work as long as they've got competent supervision.