Not only can the landlord can use your security. One method is to prorate rent based on the rule-of-thumb, this store can afford to pay about $37 per square foot at a 9-percent capitalization rate. Pangea Real Estate residents can pay at least part of the family's income.1; Subtracts 30% of the. Scenario #1: You're single and want to split your mortgage with roommates. You can pay their bill through our online portal, in person, or by mail or phone.