Equity Release on a Property with an Annex

Properties with annexes can be considered for lifetime mortgages, but the way the annex is occupied, accessed and legally arranged can affect lender appetite.

What lenders may want to understand

Questions can include whether the annex is self-contained, whether it has its own kitchen and bathroom, who occupies it, whether there is a tenancy, whether there are separate council-tax arrangements and whether the annex could be sold separately from the main dwelling.

Family occupation

If an adult child or other family member occupies an annex, the lender and solicitor may require additional information or documentation about occupation. Requirements differ between lenders.

Why this needs an individual check

Two properties both described as having an annex can be very different. A bedroom wing used by family is not the same as a separately accessed self-contained unit with its own postal or council-tax identity. The exact arrangement should therefore be described to the lender.

Read our unusual property guide.

Reviewed by David Farrell. Last reviewed: 3rd October 2026.