Quick answerMaine sells tax deeds for unpaid property taxes. Redemption: 18 months from filing of the tax lien certificate in the registry of deeds (36 M.R.S. § 943); if unpaid, the tax lien mortgage is deemed foreclosed automatically and redemption expires Sales: No statewide investor sale and no county tax deed auction; municipalities sell tax-acquired property after foreclosure, as needed year-round Governing law: 36 M.R.S. §§ 505, 942–943, 943-C (tax lien mortgage and sale of tax-acquired property).