In a year when consumers have been concerned more than ever to get the best price deals on their loans, it should be no surprise that mortgage manager State Custodians has had its best ever result. The company does not disclose the size of its mortgage book, but it reported that new mortgage origination increased by 30 per cent this year.State Custodians was launched six years ago as an online mortgage business. Its low-cost distribution model allows it to offer very competitive rates and it makes regular appearances on comparison websites among the lowest cost providers.In July last year, Resimac, which provides all the funding for State Custodians' loans, bought 80 per cent of the business.State Custodians' chief executive, Heidi Armstrong, said the business has stuck to selling only mortgages but this may change. Resimac's investment in the business has given it an opportunity to look at other growth opportunities.Armstrong said the company had demonstrated its ability to sustain low rates throughout its history and this is now giving the business momentum. Some of its loans have a loyalty bonus - a 25 basis point cut in the rate after five years. Armstrong said the company rarely lost a customer to refinancing.She said borrowers were increasingly at ease with making their initial application online and, once they had pre-approval, would get on the phone to talk to a credit adviser.And the paperwork is gradually becoming more automated. In two weeks, State Custodians will move to an electronic verification system, outsourced to greenID, which will overcome the need for applicants to turn up at a Post Office with identification papers.The company builds its marketing around winning industry awards. This year it picked up gongs from Money Magazine, Your Mortgage magazine, the Mortgage and Finance Association of Australia and Smart Investor magazine.