As it happens, she made no claims for a second home for a while but has claimed rent - although not mortgage payments as this is not allowed under the new rules.
Unsurprisingly, Labor's policies have been met by backlash from Australian real estate agents, who've launched a multi-million dollar campaign claiming rents will increase and property values will fall, affecting 18 million people.
The MP began claiming rent for the "second bedroom" in this property.
Allegation: Complaint that an MP owned a property and was also claiming rent for a property in London.
But landlords had complained that it was not fair that they were unable to claim rent on the shops that were still trading.
Martin also announced that MPs would in future only be able to claim rent, hotel bills, overnight subsistence, mortgage interest, council tax, utility charges and insurance.
The Conservatives claim rent controls would lead to chaos, but didn't appear to have a lot to say about the private rental market.
Are you allowed to claim rent paid to someone with whom you have watched an entire series of The Wire or only sporadic episodes?
Others could claim rent for the equivalent of a one-bedroom flat (up to £20,600 a year in London and between £10,400 to £15,650 a year in their constituencies) or be reimbursed for hotel bills.
"When renting out rooms in your own property, it is possible to claim rent-a-room relief," says Frier. "The first £4,250 of income received is exempt from income tax, increasing to £7,500 from 6 April, 2016.
