YOUR FIRST
CHOICE FOR A
SECOND OPINION.
Based in St Leonards, we're independent mortgage brokers helping homeowners, investors, first home buyers and medical professionals across Sydney's Lower North Shore secure the right home loan. We compare 40+ lenders, handle the paperwork and guide you from application to settlement.
Free mortgage strategy session
You could save thousands on your home loan. Pick a time that suits you — it'll land straight on Jono's calendar.
- See Jono's real-time availability
- 15-minute call, no obligation
- Instant confirmation to your inbox
Opens Jono's booking calendar in a new tab. Your details stay private.









What we sort out for you.
First home or fifth, we find a sharp rate and structure the loan to fit your life.
View home loans detailsAlready have a loan? We'll check it's still the best deal. Most clients save $1,000s.
View refinancing detailsTailored finance solutions for doctors, surgeons and medical professionals including waived LMI and discounted rates.
View medicos detailsBuild a portfolio with the right lending structure. We work with your accountant.
View investment detailsFHB schemes, deposits, LMI and more explained in plain English.
View first home buyers detailsBuying premises or expanding? We arrange commercial and SMSF lending too.
View commercial detailsYour neighbourhood broker.
Castell Finance is based in St Leonards and works with homeowners and investors across Lane Cove, Crows Nest, North Sydney, Wollstonecraft, Cammeray, Mosman, Kirribilli, Pymble, Lindfield and the rest of the Lower North Shore.
We know the local property market and we use that to your advantage. Prices, rents, the lenders who like postcodes 2065, 2066 and 2060. We can provide a free house valuation in your area:
- St Leonards 2065
- Lane Cove 2066
- Crows Nest 2065
- North Sydney 2060
- Wollstonecraft 2065
- Cammeray 2062
- Mosman 2088
- Kirribilli 2061
- Pymble 2073
- Lindfield 2070

