Those buyers include the Chinese Communist Party, Taiwan, and Hong Kong, the U.S. real estate market report from the National Association of Realtors (NAR) showed.

The investors spent an average of $1 million per property transaction, with nearly 31 percent of the purchases involving property in California, according to the report.

The New York Post reported on the NAR report:

Earlier this week, senior economists warned that the US housing market could be on the verge of a "meltdown" following this week's release of data showing a collapse in home builder confidence in July.

U.S. home builder confidence plummeted 12 points to 55 in July, according to the latest data from the National Association of Home Builders/Wells Fargo Housing Market Index released Monday.