At DO Financial Services, we bring together more than 70 years of combined experience across mortgage broking, banking, settlements and property. We're here to make finance feel simpler for first home buyers, investors, upsizers, downsizers and growing families. From government schemes to low-doc and complex lending, we compare 40+ lenders and guide you clearly from first chat through to settlement day.
Genuine comparison
We compare options across more than 40 lenders, looking closely at rates, features and suitability. This gives you a genuine comparison and helps us recommend a solution shaped around your needs—not a one-size-fits-all loan.
Clear explanations
We guide you through every step in a way that suits how you prefer to communicate. With a comprehensive onboarding pack and ongoing support, you'll always know what's happening and who to ask.
Honest advice
We take the time to understand your full financial picture, desired outcome and future goals, so our advice supports what you need today while helping you move confidently towards what comes next.
No pressure
Our consultations are obligation-free, with no pressure and no strings attached. We focus on adding value, answering your questions and helping you choose the right loan when the time feels right.
Est. 2018
In business
Locally owned and operated
150+
Families Helped
In 2025 alone
40+
Lenders on Panel
We genuinely use them all
OUR TEAM
The people behind the mission
Sam Do
DIRECTOR & PRINCIPAL BROKER
Sam is a qualified Finance Broker with degrees in Economics and Commerce, but what matters most to him is helping people feel confident about their next step. With 20 years of experience, he helps clients compare options across 40+ lenders, whether they are buying their first home, growing an investment portfolio or reviewing an existing loan. Sam offers practical strategies, flexible home or office consultations, and support throughout the process. Away from work, Sam values his family, close friends and staying active through sport.
Juan Castano
DIRECTOR & PRINCIPAL BROKER
With over 12 years of finance experience, Juan is known for clear communication, careful attention to detail and mortgage solutions shaped around each client's goals. He combines strong market knowledge, thoughtful advice and skilled negotiation to help clients feel informed, confident and supported from start to finish. Outside work, Juan enjoys family, friends, his puppies and discovering new restaurants together.
Ana Spremo
MORTGAGE BROKER
Qualified as a Mortgage Broker in 2023, Ana brings more than 15 years of executive leadership and business management experience to every client relationship. She is known for making lending feel clear, calm and manageable, taking time to understand each person's priorities and long-term goals. With integrity, transparency and genuine care, Ana helps clients feel informed, confident and supported throughout.
Oliver Dearn
MORTGAGE BROKER
Oli is a mortgage broker with experience in residential lending, bringing care, clear communication and attention to detail to every client relationship. He takes time to understand your goals and make the lending process feel straightforward and supported. Outside finance, Oli’s passion is football, shaped by four years in a professional environment. He now plays semi-professionally and coaches junior football.
behind the scenes
The team keeping your application moving
DollyOffice ManagerPurvaCredit Analyst
BilliClient Services OfficerLeannLoans Support Officer
more than mortgages
Giving back to local communities
DO Financial Services believes strong communities are built through opportunity, connection and practical support. Through our four-year involvement with The Lady Musgrave Trust, we help create pathways to safe, stable housing for women and children. We also support local schools and sporting clubs, including Slacks Creek Tigers, Slacks Creek Rugby League, Runcorn State High, Runcorn Primary and Mansfield State High, helping more young people learn, grow and thrive locally.
over 10 years in the industry
100's of happy home owners
JJohn Nukunuku
Juan was outstanding to deal with. He made the whole mortgage process simple, clear and stress-free from start to finish. His communication was spot-on, he always explained everything in a way that was easy to understand, and he went above and beyond to find the best loan options for our situation.
8 months ago★★★★★
SShaun Green
Juan helped us with an SMSF loan for a commercial property. SMSF loans are not simple as there are a number of additional steps involved. Juan did everything he could to smooth this out and make sure the process was less painful. Really appreciated the support through the process.
2 months ago★★★★★
GGeraldine Te Au
If you are looking for a business that is not only professional and transparent then we would highly recommend the services of Juan from DO Financial Services. Juan was patient and took the time to ensure we understood each step of our financial journey.
5 months ago★★★★★
AAdna Hublić
I recently bought my new home and couldn't have asked for a better broker than Juan! From start to finish, he went above and beyond to make the entire process smooth and stress-free. He was always available to answer my questions, no matter how small.
a year ago★★★★★
NNeofytos Markantonis
Juan was fantastic throughout the entire mortgage process. He was knowledgeable, responsive, and took the time to clearly explain all my options, making what can often feel overwhelming incredibly straightforward.
3 months ago★★★★★
JJ C
I had the pleasure of working with Juan, who made the entire process of buying my first home seamless and stress-free. His communication was excellent and he always went above and beyond and was quick to respond to any questions I had.