Conn. Gen. Stat. § 47-14j: Conveyance to effect change in interests among tenants.

Any change in the nature of the interests held by joint tenants which could be effected by a conveyance or conveyances to a stranger may be effected by an instrument executed with the formalities required for deeds by the joint tenant or tenants whose interests are involved. That instrument shall not be effective until it has been recorded on the land records of the town in which the real estate is located.