Home > Personal > Personal Lending > Mortgage > Mortgage Resources > Glossary > Guarantee Mortgage Guarantee Mortgage November 9, 2021 A home loan that is guaranteed by a third party.You Might Also Like: Family MattersPreparing Financially for a Baby Everyday MoneyBudget Friendly Ideas for Thanksgiving Everyday MoneySenior Discounts and Savings Everyday MoneyStarting an Emergency Savings Account Living QuartersQuestions to Ask Your Home Inspector