Rental property improvement

Hello,

 

I had started on an improvement project (ADU build) for my rental property in 2022. However this work was not completed in 2022 and spilled over into 2023. Do I report and start taking depreciation of the amount paid for the work in 2022 or do I wait till the work is completed and claim the entire expense (paid in 2022 and 2023) for depreciation purposes?

 

Thanks in advance.