Fixed Rate Mortgage — Sierra Central Credit Union is a mortgage from Sierra Central Credit Union. The ongoing APR is 6.75% Rate 7.198% *APR; 7.125% Rate 7.49% *APR as low as; 7.125% Rate 7.406% *APR. Typical credit limit: Maximum loan amount of $806,500; Maximum loan amount of $832,750. Loan terms: 15 Year; 20 Year; 30 Year.