No, you don't have to file again.
The deductions arising from home ownership are primarily from real estate taxes and mortgage interest. If you paid for points (loan origination fees) those can also be deducted.
If you do want to add them and your return is accepted, you will need to amend your return.
Please click here for instructions on how to amend your return. The instructions and forms aren't ready right now but should be ready in the next couple of weeks. You can go to the link to check. When they are ready the year 2017 will be in blue ink.
The tax calculator on Turbo Tax resets to zero when you start the amendment process. So, once you start the amended return, make your changes, any amount showing in the tax calculator is the amount of additional refund or taxes due.
You need to wait until you have received your original refund, if you are expecting one, before mailing your amended return!
If your e-file is rejected, you can simply go back in, add your home deductions, fix the rejection error, then refile your return.
