The Alaska Joint Affidavit, SHC-1320, is a legal form used to document a joint purchase of real property in the state of Alaska. It is used to declare that two or more individuals are jointly purchasing a property and to outline the responsibilities of the parties involved. This form may be used in both residential and commercial real estate transactions. The types of Alaska Joint Affidavit, SHC-1320, are the Joint Tenancy Affidavit and the Tenancy in Common Affidavit. The Joint Tenancy Affidavit is used when the parties involved are intending to own the property together as joint tenants, while the Tenancy in Common Affidavit is used when the parties are intending to own the property as tenants in common. Both forms include the names of the parties involved, the address of the property, and the percentage of ownership for each person. The forms also require all parties to sign and notarize the document in order to make it legally binding.