If you’re looking to refinance your condominium unit, you will most likely require a legal 6D certificate. Almost always required by Massachusetts real estate law, the 6D certificate ensures that any unpaid condominium or common fees are resolved before the unit’s refinancing. The form is proof that all common charges due as of the date through which payment has been received are resolved fully. Any remaining fees or charges be paid in full at least five business days before issuing the 6D certificate. In the case of condominium refinance, the homeowner typically pays all fees for the document.