@c3fin wrote:
Do you happen to know the address I should sent it to?
It should have sent with the mailed federal tax return. If the Form 4852 was completed with the federal tax return, the tax return should not have been able to be e-filed.
If it was e-filed then you will need to mail the 4852 to the address for a Form 1040.
Go to this IRS website for the address to mail, by state, for a Form 1040 without payment - https://www.irs.gov/filing/where-to-file-paper-tax-returns-with-or-without-a-payment