You have to have an official home office to claim expenses related to the home.
If you're self-employed, housing-related expenses such as mortgage interest, rent, utilities, repairs, and depreciation for the portion of your home or rental that you use to run your business are allowable expenses under the home office deduction.
You may be able to claim the home office deduction if your office is:
When you enter your home office information in TurboTax, we'll ask some questions to determine if you can claim the deduction and how much the deduction is worth. You’ll need information like the square footage of your residence and the rooms you worked in
