Also, companies may offer streamline refinances and include the closing costs into the new mortgage amount. This can only be done if there is sufficient equity in the property, as determined by an appraisal. Streamline refinances can also be done without appraisals, but the new loan amount cannot exceed what is currently owed, i.e., closing costs may not be added to the new mortgage with those costs either paid in cash or through the premium rate as described above. Investment properties (properties in which the borrower does not reside in as his or her principal residence) may only be refinanced without an appraisal and, thus, closing costs may not be included in the new mortgage amount.