After you file

First, Thank you for your help and guidance. I am the donor, my son is the donee.

we did a lot of improvements to the lands, and we pay HOA ( for main gate entrance ( building and maintenance/clear the roads to access the land/pay for a lawsuit to HOA/ grade the land when there were run off etc…)

I need to calculate the upgraded basis for my Lifetime 709 form, and also to give to my son, so he can file the long term capital gain ( the land we’re purchasing 21 years ago)

I appreciate you and this community for guidance and help!