Prospective home buyers may need to pony up more cash up front to secure a mortgage if they are looking to buy in one of hundreds of zip codes that lenders now consider “soft markets.” Countrywide and GMAC recently ranked over 1,000 zip codes on a risk scale of 1-5. Lenders to moderate risk zip codes, ranked 1-3, may require borrowers to pay an additional 5% down payment. Unlucky buyers in high risk zip codes, ranked 4 or 5, are now automatically required to put down the extra 5%.