It seems that the fifth year ankh deeds can only be placed if the house owner is old enough; co-owners cannot do it. Is this true of the tenth year Ankhs too?
A coowner can place an Ankh of Sacrifice if he is old enough
Sara had to place my Ankh of Sacrifice for me.
Edit: Err, misread your post. Guess the answer is no then unless they have changed it since she helped me out.