Mass. Gen. Laws ch. 188, § 2
(a) The estate of homestead of each owner who is an elderly or disabled person, regardless of marital status, shall be protected under this section against attachment, seizure, execution on judgment, levy and sale for payment of debts and legacies, except as provided in subsection (b) of section 3, to the extent of the declared homestead exemption; provided, however, that the declaration of homestead for such elderly or disabled person that complies with section 5 has been recorded; and provided, further, that each owner occupies or intends to occupy the home as his principal residence.
An owner of a home who qualifies under this section shall, upon recording of an elderly or disabled person's declaration of homestead protection, be eligible for protection of such ownership interest to the extent of the declared homestead exemption as set forth in clauses (3) and (4) of the definition of ''declared homestead exemption'' in section 1 regardless of whether such declaration is recorded individually or jointly with another.
(v) the death of the person; or (vi) with respect to a home owned in trust, the execution of a deed or recorded release by the trustees.
In the event that an owner records a declaration under this section and then conveys to or is survived by a spouse who does not have the benefit of an estate of homestead created under this section or section 3 and the spouse occupies or intends to occupy the home as the principal residence, then the spouse shall be deemed, as of the time such spouse acquired title, to have the benefit of the declaration previously recorded to the same extent as if such declaration had been recorded under section 3, until the spouse becomes eligible for and records a declaration of homestead pursuant to this section.