Are owners unit windows and doors considered common areas?
I don’t see how they could be. When we lived in an HOA, our “unit” was a separate house and yard obviously not common area, open to use by all residents like a pool or a play yard. Even if the “unit” you purchased is an apartment in a high rise building neither windows or doors are open to other residents. However if an exterior window on the 4th floor could only be repaired from the outside I would think that the CC&Rs would address that possibility since although it is not a common area it would be unreasonable to expect an owner to be able to get it fixed themselves.
