In August of 2024 the Governor approved an Act that amends the Massachusetts declared homestead exemption from $500,000.00 to $1,000,000.00. See August 2024 Amendment here.
https://malegislature.gov/Laws/SessionLaws/Acts/2024/Chapter150
On August 6, 2024, Session Law 2024, c. 150, s. 51 (an Act relative to the Affordable Homes Act) increased the amount of the homestead exemption that is created by written declaration, from $500,000.00 to $1,000,000.00. This change amends section 1 (the definition section) of Mass. General Law chapter 188, the Homestead Statute. According to language in the Amendment, the increase takes effect immediately. See more here under Section 51