But in my blue-collar townhome rentals, I am betting the most I'd get out of having such is "oh, neat" and that's about it.

I have 2 deals I would like to wholesale that I have down in Ocean County and Burlington County.

Hey Joel I’ve done 6 ADU personally on my properties really easy and can be done under 50k less if your handy I’m actually gonna start one soon currently waiting on blue prints.

Its a largely blue collar area. 

You probably will get good blue collar people who will treat your property with respect and pay the rent on time.My recomendation is the county and not the city.  

Those tend to be blue states where rent control might be in place, but there's a balance between rent control and new supply constraints. 

Anybody have any success stories they would like to share from the blue springs, lees summit, raytown, independence, grain valley, or KCMO area?

If I was uber rich and owned an ocean front retreat, I pretty much 100% guarantee that I would be against STRs in my neighborhood, and so would everyone else on this board.Are you down for a hotel opening up next door to your own residence?  

The property was built in '74, and is in a solid blue collar neighborhood south of Seattle.

Prices in Seattle may be more-expensive, but appreciation and higher rents may make Seattles look like Blue Chip investments compared to cheap properties that don't appreciate quicly and where managing, maintenance and low rents make investors hate the real estate business.You have to do the math comparisons because properties in Seattle may cost more where you get less units, but the Seattle properties may appreciate better and the rents are higher and can be increased every year.