There is some serious money to be made for a developer that finds a way to parcel up older inner city condo and apartment building parking lots and build towers on them like this.
I would like to see the market for parking spots become far more liquid. People or existing buildings should be able to sell their parking lots for development easily.
For example, take a typical 1960s / 1970s Beltline building around 6-10 floors, around 30-100 units. Many have no below grade parking and are surrounded by a lot for residents that can be larger than the floor plate of the building they serve.
If I could convince a condo board or an apartment owner that I will pay for your parking lot and build one of these, I can give those owners back 20 - 40K each for their spaces. Sure, it would be tough in many buildings given personal dynamics, but there is some buildings that have so few drivers as it is already. Perhaps a special assessment has come up for a big item and the cash is needed. Or it can reduce condo fees by setting up a sizable reserve fund.
I am not saying everywhere - but certainly some buildings have designs that are no longer applicable to their tenants and area as the city has grown. The area around 17th Ave comes in mind. I know of no one that lives in within a few blocks of it that regularly drives and only a handful have cars that they "need". Cycling is booming in the area, Car2go culture is ubiquitous and most people want everywhere already. It will only increase as the city grows. If you could unlock a 20-40K bonus for each unit for selling the lot, I would be surprised if there weren't a few buildings that take the offer.
I have no idea if it is possible - and I am sure I would break all sorts of zoning bylaws by attempting - but if I can convince the owners of one of those small buildings to give up their spaces, surely there is some value there to be captured.
Once the precedent for new, low cost, no-parking condos is set of course.