Reverse Mortgage or Lifetime Mortgage

A reverse mortgage  is a loan available to seniors aged 62 or older, per HUD, and is used to release the home equity in the property as one lump sum or multiple payments. The homeowner's obligation to repay the loan is deferred until the owner dies, the home is sold, or the owner leaves, they can be out of the home for up to 364 consecutive days.
In a conventional mortgage the homeowner makes a monthly amortized payment to the lender; after each payment the equity increases within his or her property, and typically after the end of the term the mortgage has been paid in full and the property is released from the lender and becomes fully and solely owned by the homeowner. In a reverse mortgage, the home owner makes no payments and all interest is added to the lien on the property. If the owner receives monthly payments, or a bulk payment of the available equity percentage for their age, then the debt on the property increases each month.
If a property has increased in value after a reverse mortgage is taken out, it is possible to acquire a second (or third) reverse mortgage over the increased equity in the home. However, a reverse mortgage must be the only mortgage on the property.  Most lenders put a lien of close to 300% of the amount funded in the transaction, so very rarely do they allow a "refi" type event to "capture" more equity. It is generally a one time event. The lender will require the loan satisfied and paid in full before they will offer a loan somewhere else. You will have to be in good standing with HUD as well.