Thanks for dropping your concern here in the Community, @yankeegirl. Let us share some information about your goal.
In QuickBooks Online, Work in Progress (WIP) is not available. To record the expense, consider creating a bill and posting it to the specific WIP account you created for the corresponding spec build.
Moreover, I suggest contacting an accountant for further guidance with your concern. If you don't have an accountant, I can help you find one. Feel free to visit this page to find an accountant for your business: Find a QuickBooks ProAdvisor.
As a future help, you can create a project rather than manually adding costs to a WIP asset account. Visit this link to understand more about projects: Introducing QuickBooks Projects.
Reply here on the thread if you have more questions about your concern. The community is here 24/7. Have a great one!
