HousingDoom thanks our source for forwarding us an email of Countrywide’s new guidelines for the trifecta of the housing bust- Miami, Las Vegas and Phoenix. Of particular note is the fact that they are changing their allowable LTV by 5% for these markets. [Homebuyers are going to have to carry more risk for falling home prices] They are also going to work harder to make sure your home is worth what you say it is: