Westpac Group, the nation's second largest lender, is giving risky property investors less than a month to find another lender amid growing concerns about the impact of rising rates, falling values and oversupply.

The bank is sending a single-page letter to investors warning it can "no longer support our commercial relationship with you", adding it will work with the borrower to help them find a new lender.

Victor Kumar, a director of Right Property Group, a buyers' agency, who has seen the letter sent to property investors, said: "This is of concern because they have used the banking system to get these loans."

The brief letter informs borrows Westpac is a responsible lender, claims it can no longer support the relationship and volunteers to help them find another lender, he said.


Lenders panicking

Martin North, principal of Digital Finance Analytics, who has also been in contact with borrowers who have received the letter, said: "There is a sense of panic among lenders about the risk in their portfolios. They still want growth but there is concern about poor lending standards."

It comes as new APRA analysis reveals a sharp spike in higher-risk loans by major banks in the three months to the end of June, despite prudential regulators increasing pressure to toughen serviceability.

The analysis reveals a near-threefold increase in the number of loans during the past 12 months that are outside the prudential regulator's new guidelines on borrowers' capacity to service their loans.

Westpac's move comes amid intense pressure on lenders from rising lending costs, tougher prudential controls and the interim findings of the royal commission into banking and financial services, which has already provided humiliating disclosures about shoddy practices across the sector. Banks are forensically examining their lending books.

The Westpac letters are typically being sent to interest-only borrowers with multiple properties and high loan-to-value ratios, usually 80 per cent or above. The investors often have up to six properties.

Month deadline

Some of the affected borrowers have been told they have until October 20 – or less than a month – to find a new lender.

Mortgage brokers, buyers agents and analysts claim the Westpac letters are sending a shiver through an already nervous property sector facing rising lending costs and lower values.

They warn it could cause fire sales, as distressed borrowers struggling to finance their properties decide to cut their losses and sell into a falling real estate market.

It is also likely to drive borrowers to shadow lenders, which are less strictly regulated than authorised deposit-taking institutions, but will take on higher risk for higher lending rates.

Analysis by investment bank Morgan Stanley shows the number of households with multiple investment properties has grown strongly in recent years. About 1.5 million households have one investment property, an increase of about 2 per cent year-on-year.

About 384,000 households own two properties, a rise of about 3 per cent, and 18,000 own five, a jump of about 7 per cent.

Westpac last week came under fire after it announced discounted rates for new borrowers as it increased standard variable rates for existing customers.