(a) In case of a transfer, other than by will or intestacy, the department, upon satisfactory proof that no taxes are due which would be a lien on the real property transferred by reason of the death of the transferor, may release all or any portion of the property from any lien imposed by this article to which the property otherwise might be subject.

(b) The department may, at any time, release all or any portion of the real property subject to any lien imposed by this article from such lien or subordinate such lien to other liens and encumbrances if it determines that the taxes are sufficiently secured by a lien on other property of the decedent or that the release or subordination of the lien will not endanger or jeopardize the collection of the taxes.

(c) When inheritance tax in respect to the transfer of particular real property is paid on the value of the property without diminution for any deductions authorized by this article, other than a mortgage on the property existing at the date of the decedent's death, the department, upon request of a party in interest, shall issue a certificate evidencing the release of the property from the lien of tax.

(d) A certificate by the department to the effect that any real property or interest in real property subject to any lien imposed by this article has been released from the lien, or that the lien has been subordinated to other liens and encumbrances, shall be conclusive evidence as to any bona fide purchaser, encumbrancer or lessee that the lien has been released or subordinated.