We want to refinance and borrow an extra 100,000, total loan amount would be 580,000. The security is our home on 150 acres and worth around 800,000. Is this possible?

Yes it is possible. It will depend on location local council services to the property and of course a full assessment of your card last two years financial accounts.

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Call me on 0418 472 553 if you would like further assistance. Kind regards Martin