The order against a home on Woodglen Drive in Chino Hills alleges it is being used as a hotel in violation of city zoning laws, the Los Angeles Times reported Tuesday.
A website city officials suspect is associated with the property describes a full range of services for pregnant women from shopping trips to assistance in obtaining U.S. passports for their newborns.
The Chinese-language website Asiam Child advertises a 30-day stay at the Chino Hills facility, along with a month of prenatal care, for $10,500 to $11,500.
Federal immigration officials say there is no law prohibiting pregnant women from entering the United States.
However, a spokeswoman for U.S. Immigration and Customs Enforcement said obtaining a visa through fraud would be a crime.
So-called birth tourism appears to be an active but largely under-the-radar industry in Southern California, the Times said.