Friends of ours used to run an apartment complex and how they did it without computers I don't know. It wasn't a huge complex but still. That's alot of work. Had they used a computer and a software program like Buildium Property Manager Edition life would have been such a breeze for them. This software is an awesome online, comprehensive property management system that helps rental property and association managers work smarter. What it does is to streamline tasks from any computer which is connected online. The property manager edition helps to track financial records by property, accept electronic payments, create work orders online, give residents online access, and receive maintenance requests. The association addition helps to manage your community by creating and maintaining budgets, track association issues and to-do's, keep maintenance records, accept electronic payments and much more. Either program makes like so much easier!