A continued decline in the number of public housing tenants falling foul of the Western Australian Government's controversial "three-strikes" policy is a sign of the approach's success, the Housing Authority says.

Figures provided to a budget estimates hearing showed a downward trend in the number of strikes issued against tenants had continued this financial year.

The policy, introduced by the Barnett Government in 2011, means public housing tenants who accumulate three strikes for anti-social or disruptive behaviour face eviction.

In 2013-14, 179 third strikes were issued and in 2014-15 the total was 170, but with little over a month remaining this financial year, that figure is down to 105.

There has also been a notable decline in the number of first strikes issued, from 1,410 in 2013-14 to 964 so far in 2015-16.

The three-strikes policy sparked strong criticism from housing advocates and welfare groups, some of which warned its introduction would have a particularly devastating impact on Aboriginal families.

But the Housing Authority said the decline in the number of strikes being issued was encouraging.

"First to second to third strike and ultimately to eviction is starting to trend in the right direction, so ultimately we think the methods we've put in place are ensuring tenants are understanding the consequences," Housing Authority's general manager of service delivery Greg Cash told the hearing.

"You do notice a significant reduction, but there are still problems and we continue to manage them as effectively as we can."

Income inclusions questioned

Labor used the estimates hearing to attack the Government for its move announced earlier this year to include some Commonwealth allowances in income totals used to calculate public housing rents.

Labor frontbencher Paul Papalia questioned why the Government had excluded some payments, such as pensions given to veterans, after a strong public backlash but did not apply that to other benefits.

But Nationals leader Terry Redman, representing Housing Minister Colin Holt in the hearing, said the changes were driven towards trying to ensure tenants paid 25 per cent of their income as rent.

"Twenty-five per cent is the threshold for what is considered to be fair and reasonable for the price of social housing," Mr Redman said.

Mr Redman was also quizzed about the status of reform for funding of services to remote Indigenous communities.

"Both myself and the Minister for Child Protection are in the final throes of getting endorsed through the sub-committee of Cabinet a roadmap for where Government sits on both infrastructure investment and service provision," Mr Redman told the hearing.

"We're expecting that to be made public in June ... but that will be subject to a Cabinet process as well."