City, under threat of imminent domain, purchases residential real property and reimburses for trees and fence and landscape and issues a lump sum 1099-S  .  I want to defer gain under code section 1031 until purchase of trees and fencing when actual cost will be known.  I believe I have 4 years to replace and determine amount that is capital gain.

What form do I use to report my intention to use 1031 in 2024 and what attachments are needed?

Is there a better way to do this?  Thank you.