We live in a condo in an industrial loft building. Many occupants (but none recently, according to the building manager) have had storage lockers built in their parking spaces (all different sizes, and we want one that's fairly large). We would like to have one built, but the only ones I can find online are wire mesh, and we want solid metal walls (not see-through). It looks like it will have to be custom built.

Where would I look - what terms would I search under - what type of fabricator should I be looking for?