Sen. Jack Latvala, R-Palm Harbor, wrote a letter Thursday to Gov. Rick Scott as well as the state's legislative leaders asking for an inquiry.
Latvala, the chairman of the Senate Ethics and Elections Committee, stated he wants a "conclusive finding'' into whether the legislators are violating the law.
A spokeswoman for Senate President Don Gaetz said he was reviewing the letter. A spokesman for House Speaker Will Weatherford said the speaker has not yet seen it.
A recent television news report reignited questions about where Sen. Maria Sachs, D-Delray Beach, House minority leader Perry E. Thurston, Jr. D-Fort Lauderdale and Rep. Hazelle Roger, D-Lauderdale Lakes lives.
This past spring Latvala questioned where Sachs lives, but she maintained she met residency requirements.