Business overview house and stock offer a range of storage units for both personal and business customers. with a range if unit sizes available we are confident we have the space for you!. About us. house and stock self storage is the leading self storage facility in northern ireland providing a range of individual units for all your storage needs.. House and stock self storage offer clean, accessible units in a range of sizes at very competitive rates! start-ups: if you have stock to hold you may find it quickly takes over your home..