I've heard that it's more ideal to invest in markets that have limited potential for new development, as that accelerates property appreciation. Do the city maps typically show what land is un-buildable around the cit...

Check covenants or bylaws of your HOA for restrictions on renters or short-stay tenants.2.

If this is commercial SFD and HUD won't apply, there are other laws to abide by, but you can restrict who gets in, restrictions applied fairly. 

For me, Japan is also attractive when it comes to investments, if I may ask, are there any restrictions for foreigners to invest in Japan?

Basically its income restrictions that keep these condo prices low as if it wasnt income restricted, these condos would be worth about $100k more.  

For these reasons, officials say, it's time to revert to the more restrictive anti-quick-flip rules that prevailed before the waiver: The 90-day standard will come back into effect after Dec. 31.

You cannot choose who you want to rent it to; or they simply has a rental % restriction on the total units.

I have had delays with the city regarding flood plains that didn't exist when I bought the lot and caused it to be un-buildable until FEMA made the City of Austin remove their flood map restrictions because they didn't match national standards and FEMA actually pays the City of Austin over $2M a year for flood management infrastructure which they threatened to revoke unless the city adhered to FEMA.  

The question, topic, is about selling, not conniving how some development might, could happen or what they may or may not want with it.Yes, you can sell, so long as a deed with a restriction was not conveyed.

if it is a Fannie Mae owned REO there are deed restrictions on reselling the property in the first 90 days though I think wholesaling would be fine, it more applies to flipping where you are reselling for more than 20% above what you paid if I remember correctly