What sort of demographics (i.e. millennials, retirees, families, etc.) are others targeting in Garden City in reference to residential development?

Tiny Home communities for the retired people and for the millennials?

Regularly do search for "fastest growing cities / towns / suburbs" "best towns for retirement / families / jobs / millennials / baby boomers" "most affordable cities" etc and see which cities come across the list which are both affordable to you and attractive. 

Even though millennials are flocking to urban areas, the large amount of supply will reach and possibly exceed demand. 

Waiting is not my forte, blame it on me being a millennial.

And - it seems to be the builders -are building pricier homes mores than $250k and under.....so between 1st generation immigrants, or even millennials who have some debt, I feel this price point will indeed have a demand - and therefore. 3% appreciation isn't a given - but it's not outlandish.  

If you look at the millennial population it is actually one of the highest millennial population growth cities in the country.

People will always need housing, it's just a matter of where millennials are choosing to go. 

And...Millennials were even more likely to have made an offer sight-unseen, with 41 percent saying they had done so, compared with 30 percent of Gen-Xers and 12 percent of baby boomers....These folks are mostly college grads, and mostly had a course or two in college that touched on Game Theory, if not algorithmic "if... then" type thinking that was incidental/implicit as part of some programming course, so it is entirely unsurprising to me that my generation is doing this disproportionately.

But, it is so much more profitable with the risk diversified amongst hundreds of renters and their diverse set of jobs, the growth of the Millennials staying renters and the Boomers following suit, the lowest home ownership rate in years, and the overwhelming number of foreigners coming in buying investments...at least these investments should be good!