Yes, you can list this under the Home Office deduction and the office portion of the repair will be calculated. This may result in having a deduction from this home office to carry forward to next year.
Or you can list large repairs/improvements under Assets.
Repairs for Entire Home - Home Office
These are repairs and maintenance expenses related to your entire home, such as painting your house (inside or out) or fixing your furnace.
**More extensive work, such as remodeling or adding a new roof, should be added in the Assets section as a home improvement and depreciated (written off over several years).
Repairs that benefit only part of your home, but not your home office, such as painting your kitchen, should not be counted as a home office expense (the expenses must either benefit your entire home, or specifically your home office).
