Hi there, Cwipf.
I can see the importance of tracking costs for internal construction projects without a customer and revenue. However, the option to do so is not yet available in QuickBooks Desktop (QBDT).
We recognize that each company has unique needs, and I know how the feature you're looking for would benefit and empower your business. I'd recommend submitting your feedback to help improve the program by going to the Send Feedback Online feature in QuickBooks Desktop.
You can also visit this page or the What's New section on your QuickBooks Desktop to get updates on our latest news about product improvements.
Let me know if you have other concerns about QuickBooks. I'll get back to you right away. Have a great day.