In the situation described in the OP message, you absolutely cannot deduct those living expenses. See below from topic 511, IRS:
"Generally, your tax home is the entire city or general area where your main place of business or work is located, regardless of where you maintain your family home. For example, you live with your family in Chicago but work in Milwaukee where you stay in a hotel and eat in restaurants. You return to Chicago every weekend. You may not deduct any of your travel, meals or lodging in Milwaukee because that is your tax home. Your travel on weekends to your family home in Chicago is not for your work, so these expenses are also not deductible. If you regularly work in more than one place, your tax home is the general area where your main place of business or work is located.
In determining your main place of business, take into account the length of time you normally need to spend at each location for business purposes, the degree of business activity in each area, and the relative significance of the financial return from each area. However, the most important consideration is the length of time you spend at each location.
You can deduct travel expenses paid or incurred in connection with a temporary work assignment away from home. However, you cannot deduct travel expenses paid in connection with an indefinite work assignment. Any work assignment in excess of one year is considered indefinite. Also, you may not deduct travel expenses at a work location if you realistically expect that you will work there for more than one year, whether or not you actually work there that long. If you realistically expect to work at a temporary location for one year or less, and the expectation changes so that at some point you realistically expect to work there for more than one year, travel expenses become nondeductible when your expectation changes. For an exception to the 1-year rule for federal crime investigations or prosecutions, refer to Publication 463, Travel, Entertainment, Gift, and Car Expenses.
You may deduct travel expenses, including meals and lodging you incurred in looking for a new job in your present trade or business. You may not deduct these expenses if you had them while looking for work in a new trade or business or while looking for work for the first time. If you are unemployed and there is a substantial break between the time of your past work and your looking for new work, you may not deduct these expenses, even if the new work is in the same trade or business as your previous work. Refer to Publication 529,Miscellaneous Deductions."
