When do I report an investment property (NY)?

[Joe Faruko]

Hi All - I recently bought 2 investment properties in Long Island and wanted to know when I needed to report them on my tax return? I am unsure if the props would be rentals or flips, as of now I am feeling out the market to figure out the best option. The rehab will need until the beginning of next year to be completed, should i wait until 2021 tax returns to report the investments, write offs, depreciations etc.?