(a) In the case of a sale of a unit where delivery of a public offering statement is required pursuant to section 4- 102(c), a seller:
(1) Before conveying a unit, shall record or furnish to the purchaser releases of all liens, except liens on real estate that a declarant has the right to withdraw from the common interest community, that the purchaser does not expressly agree to take subject to or assume and that encumber: