Pets-Allowed Apartment Rentals business. Business Overview The most common phrase in house or apartment for rent advertisements is 'no pets allowed.' If you have a dog or cat, then there is a good chance that you have dealt with the very frustrating task of finding a new rental home for yourself and your pet. This business opportunity comes to the rescue of all pet owners who are seeking rental accommodations that allow pets. To get going, contact landlords and property...