The grant of free warren could be as a gift, or in exchange for consideration, and might be later alienated by the grantee. The stipulated area might be coextensive with the frank-tenement of the grantee, or it might be discontinuous or even at a considerable remove from the grantee's holdings. The right of free warren did not extend automatically to the freeholder of the soil.
Although the rights of free warren are usually discussed in the context of forest law, the only law which applied within the warren was common law. Thus, even though the warrant ultimately derived from the sovereign, the only statutes applied to poachers in a warren were the common-law crimes of theft and trespass.