No, you do not delete your old office space, rather you will adjust your allowable square footage.
If your qualified business use was for a portion of the year (for example, a seasonal business, a business that begins during the year, or you moved during the year) or you changed the square footage of your qualified business use, your deduction is limited to the average monthly allowable square footage. You calculate the average monthly allowable square footage by adding the amount of allowable square feet you used in each month and dividing the sum by 12. When determining the average monthly allowable square footage, you cannot take more than 300 square feet into account for any one month. Additionally, if your qualified business use was less than 15 days in a month, you must use -0- for that month.
The IRS clarifies this in this example: Amy files her federal income tax return on a calendar year basis. On April 20, she began using 100 square feet of her home for a qualified business use. On August 5, she expanded the area of her qualified use to 330 square feet. Amy continued to use the 330 square feet until the end of the year. Her average monthly allowable square footage is 150 square feet, which is figured using 100 square feet for May through July and 300 square feet for August through December divided by the number of months in the year ((0 + 0 + 0 + 0 + 100 + 100 +100 + 300 + 300 + 300 + 300 + 300)/12).
There are some great examples of changing your office space in your home in IRS Publication 587
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
