Damien Kosi

Lis Nosworthy

As a first home buyer, Damien was absolutely wonderful, he took the time to answer my questions, made sure everything made sense to me, and was more than happy to give me advice based on varying scenarios. Damien and Mamta both always responded quickly to my queries, and helped immensely when things didn't go as first planned. I couldn't recommend One Stone Finance highly enough!

Hannah R

We could not be happier with the most incredible and personable service we received from One Stone- we went in with no idea on the processes involved with buying a home and a complicated situation - in the end with the help of One Stone we purchased our first home and our dream home. My husband and I cannot thank Damien enough for the hard yards he put into to our loan application (and everything after!) as well as everyone else in the team. I would recommend One Stone to anyone and everyone.

Zoe Caswell

The team at One Stone Finances are nothing less than amazing - their help and guidance was the best. My partner and myself were so incredibly happy with their company! We are forever grateful of their hard work in making our settlement date happen so smoothly. A special thanks to Damien, we are so very grateful for EVERYTHING. He was the absolute best and we will continue to recommend him/will return when we require his help in the future! Once again, a big thank you!What an amazing team!!!! 100% recommend :) Zoe

Iona Rosson

Dear Gina, We just wanted to say a massive thank you for all your help getting us through our first home loan! As first-home buyers, we had no idea what we were in for — but you somehow managed to make the whole thing feel surprisingly smooth (and even a bit fun, which we didn’t think was possible in the world of finance). Your patience, clear communication, sense of humour, and calm approach during those last-minute scrambles kept us sane right to the end. You really went above and beyond, and it never went unnoticed. Please also pass on our thanks to Damien, our mortgage broker, and the rest of the One Stone Finance team — it genuinely felt like everyone was in our corner cheering us on to the finish line. We’re now happily moved in and still can’t believe it’s real — thanks for helping make it happen! Cheers, Sean & Iona

Brian Quinn

I had a fantastic experience gaining finance for my property through One Stone Finance. Close friends recommended Damien, and he didn't disappoint. From the very beginning, Damien, Mamta and the wider team were professional, responsive and genuinely invested in helping me secure the right outcome. Damien’s guidance was clear and strategic, Mamta was incredibly efficient and detail-oriented, and together they made what can often be a stressful process feel smooth and well managed. Communication was excellent throughout — I always felt informed and supported at every stage. Their knowledge of the lending landscape and ability to navigate the finer details gave me real confidence. Nothing was too much trouble, and the team consistently went above and beyond to ensure everything progressed seamlessly. I'm extremely grateful for their expertise and would highly recommend One Stone Finance to anyone looking for a reliable, knowledgeable and proactive mortgage broker team.

Timothy Tan

Damien and the team were very helpful getting loan approved and sorting out all the paperwork, was a smooth process, highly recommend