Here's an example of an affidavit:
http://www.cookcountyassessor.com/forms/OccupancyAffidavit.pdf
What you want to do is modify the letter to your own needs by stating you are providing alternative documents as proof of joint residency as well as having both you and your spouse sign the letter and swear in front of a notary that you have resided together during the entire statutory period.
http://www.cookcountyassessor.com/forms/OccupancyAffidavit.pdf
What you want to do is modify the letter to your own needs by stating you are providing alternative documents as proof of joint residency as well as having both you and your spouse sign the letter and swear in front of a notary that you have resided together during the entire statutory period.