Its a very large undertaking to convert a single tenant industrial building into a multi (washrooms, firewalls, truck doors, offices, entrance, sprinklers, meters etc) and no one is going to do this for 2000 sq ft.
I agree with the jamscal, your best bet is drive the industrial areas, look for the multi unit buildings and call off the signs. Agents are not going to bother searching for you for 2000 sq ft so its best to do it yourself. A great deal of industrial space never gets listed so you have to do the windshield search. You'll also start to get a sense of what you like and don't like