This is great news for anyone investing in Rental Property!

Washington, D.C., traditionally takes a back seat to world cities like London, New York and Tokyo when it comes to real estate investment.

That's likely to change.

Thanks to a proposed $1 trillion wave government spending, investors are flocking to D.C. for opportunities in the commercial and residential real estate markets. All these new programs will need offices, after all, and their employees will need places to live.

This year, Washington leapfrogged London for the first-place ranking in the world's best cities for real estate investment. But don't count out the world's financial capitals just yet--even with massive financial troubles in London and New York, those cities finished second and third, respectively.

Why? It's the appeal of long-term stability, and fears that emerging countries are going to take a harder hit. While the U.S. property market sputters, China is poised for its worst deflation in a decade, focused heavily on property price declines, according to Deutsche Bank.

"For the U.S. and U.K., part of it is flying back to safety," says François Ortalo-Magne, a real estate professor at the Wisconsin School of Business. " For China and India, there's a sense that we went there and tried it, but it wasn't producing."