Not all home-related expenses are deductible on Form 8829. To be eligible for deduction, the expenses must meet certain criteria set by the IRS. Generally, the expenses must be ordinary and necessary for your business and directly related to the business use of your home. Additionally, there may be specific rules and limitations for certain types of expenses, such as mortgage interest and property taxes. It's important to review the IRS guidelines and consult with a tax professional to determine which expenses are deductible and to ensure compliance with the IRS rules and regulations.