Kushner Cos., the real estate firm owned by the family of President Donald Trump's son-in-law Jared Kushner, has received about $800 million in federally backed debt to buy apartments in Maryland and Virginia — the company's biggest purchase in a decade.

The loan was issued by Berkadia, a lender co-owned by Warren Buffett's Berkshire Hathaway Inc. and Jefferies Financial Group Inc., in a deal that's backed by government-owned Freddie Mac, according to a person familiar with the matter who asked not to be named discussing the private transaction.