Loft Hatch in top floor tenement
I would like to install a slightly larger loft hatch into the attic space above my top floor (owned) tenement flat. I will have to cut through and make safe a beam or joist – do I need to alter the deeds/seek permission? The space is only going to be used for storage, but the existing hatch is extremely difficult to access. This should help subsequent tenants and hopefully allow easier access in the future for anyone else in the stair.
Thanks for your help!