if he's the sole owner of the home he will have to file his own return to report this. as to whether you can claim him as a dependent there are three tests of which one is met because he is your farther. the other two:
To qualify as a dependent for tax purposes, a person's gross income for the year must be less than $4,700 for the 2023 tax year. Gross income includes all taxable income including any taxable gain from the house sale Before any exclusion) . other rules affect what's included in taxable income. You must provide more than half of the person's total support for the year.
from 1040 instructions
**Gross income means all income you received in the form of money, goods, property, and services that isn't exempt from tax, including any income from sources outside the United States or from the sale of your main home (even if you can exclude part or all of it). Don’t include any social security benefits unless (a) you are married filing a separate return and you lived with your spouse at any time in 2022, or (b) one-half of your social security benefits plus your other gross income and any tax-exempt interest is more than $25,000 ($32,000 if married filing jointly). If (a) or (b) applies, see the instructions for lines 6a and 6b to figure the taxable part of social security benefits you must include in gross income. Gross income includes gains, but not losses, reported on Form 8949 or Schedule D. Gross income from a business means, for example, the amount on Schedule C, line 7, or Schedule F, line 9. But, in figuring gross income, don’t reduce your income by any losses, including any loss on Schedule C, line 7, or Schedule F, line 9.
