These things can be automatically reported at the time of purchase.
Eh, not really. In my previous house, I redid the master bath twice (because the first contractor did a bad job). They both qualified to increase my cost basis when they were done, but the first time no longer qualified after the second... That's theoretically trackable through some seriously invasive purchase recording, but realistically, not so much.
Citizenship is also trickier than it sounds. There's no full and complete register of US citizens to compare with. Better to have someone declare they are, and jail them if they vote and it turns out they aren't.
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Eh, not really. In my previous house, I redid the master bath twice (because the first contractor did a bad job). They both qualified to increase my cost basis when they were done, but the first time no longer qualified after the second... That's theoretically trackable through some seriously invasive purchase recording, but realistically, not so much.
Citizenship is also trickier than it sounds. There's no full and complete register of US citizens to compare with. Better to have someone declare they are, and jail them if they vote and it turns out they aren't.