The government would increase the amount of social housing available at low rents for people who have lost their homes, she told a press conference.
Mortgage relief would be available only to people earning less than 19'200 euros a year.
Banks, many of which are about to receive the first funds from a European bailout of up to 100 billion euros, have repossessed almost 400'000 properties since the real estate market crashed in 2008, including commercial buildings.
But the suicide last Friday of 53-year-old Amaia Egana, who jumped from her fourth-floor flat in the northern Basque Country as she was about to be evicted, has pushed the issue to the top of the political agenda. Evictions have become increasingly common in recession-bound Spain, where a 25 percent unemployment rate coupled with drastic government spending cuts has badly hurt the weakest in society.
Many homeowners can no longer keep up payments on their mortgages after losing their jobs or businesses.