What are the tax incentives (in the US)?
On a federal level, all I can think of is mortgage interest tax deduction, but that was greatly neutered in 2017 TCJA, and less than 10% of Americans can benefit from it. And that is a tax incentive to borrow money to buy a home, not a tax incentive for home owners.
Only other one is 1031 exchange, but that is rarely needed for typical homeowners and is available to all real estate owners.
On a state/local level, I guess there are some locales with property tax adjustments, but other than that, I cannot come up with any.