Luxury-home prices in 33 major cities around the world—from Los Angeles to Monaco—are up 36% since 2009, according to data from real-estate firm Knight Frank.
The taxman has noticed.
To bolster public coffers or to curb rampant growth, a number of cities, including Singapore, Hong Kong and San Francisco, have imposed or increased taxes on wealthy home buyers in recent years
via How a Mansion Tax Could Affect Wealthy Neighborhoods – WSJ.