For those buyers it's called "parking their money".

The high end is the 20 or so co ops on 5th Avenue or Park Ave (one is on East End Avenue) that require liquid assets of $100 million + to gain board approval.  

., but their lots were like parks.

So, just so I’m understanding correctly, unless the ADU has a driveway for parking of its own, then rent rates might go down on the actual house bc, essentially, the property land is being shared by different parties?

ParkingRaleigh does not require additional parking spaces to be compliant.

So, in your considerations, I would park right there for a bit and determine how this would look for you.Since you have about 2.5 years to think about it before you would need to spring into action to take advantage of the rollover for tax advantages, maybe you try on a rental and see how it fits. 

In addition to finding a spot to park you money between loans you may just need more deal flow? 

Permit eligibility is based on region (usually the west side of town) and density (quantity of surrounding STR's in the area) as well as percentage of landscaping and minimum parking requirements. 

Quote from @Allison Park: Good agents won't want to work with you.Nothing has changed with commissions.

Where will everyone park?