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What steps should be taken, if any, when you find out your home's market value is underwater, i.e. worth less than the mortgage owed?
Do you still enjoy living in your home? Can you afford the mortgage payments? Is there a reason for you to move, such as a relocation for work, or your third kid is on the way and your current house is already crowded with two? Those questions are more important than "Is my home worth more than what I owe on it". Ultimately, it's your home. You probably chose it for more than just its price, and those qualities should still make it valuable to you in some way beyond the monetary value which goes up and down with the market. You have a few options: