I think I have found the answer myself.
https://ttlc.intuit.com/community/taxes/discussion/where-do-i-enter-the-purchase-of-a-building-for-b...
If I understand this correctly, I need to wait to enter it until we move the business to the second house.
So, I will track all the improvement expenses and add them to the cost basis, on next year's tax return.
Please, let me know if this is not correct.
Thank you for the assistance.
