Manx National Heritage has applied for planning permission to modify Castle Rushen's former courtroom.
The organisation is applying for registered building consent to make changes in the witness room and courtroom in order to install a lift.
In its application, it says it needs to do the work to make the area on the first floor accessible.
The room was last used by the Island's courts in 2013, but still hosts the investiture ceremony for new Lieutenant governors.
Snow shuts the Mountain Road
Stop putting knives in recycling, says council
Bee Gees to release limited-edition box set
Northern Irish politician criticises Manx visa rules
Elective surgical unit opens at hospital
Piling rig on TT course tonight
10-day bus strike from next weekend
Yellow snow warning issued by forecasters