The incomes of public housing tenants should be used as the sole basis for deciding how rents are adjusted in future, members of the Housing Authority's rent review committee said yesterday. A majority of members agreed that incomes precisely reflected how much the tenants can afford. Wong Kwun, a member of the ad hoc committee on domestic rent policy, said: 'Most of the members prefer this option. The reason is because this option is very similar to the one we are using now. It shows how much people can afford.' This option works slightly differently from the current assessment system, which calculates not only incomes but other welfare payments, such as Comprehensive Social Security Assistance. 'We didn't make any decision today,' Mr Wong said. 'Our role is to give advice and provide analysis. The final decision will be made by the public. There will be a public consultation.' The Housing Department gave the ad hoc committee a four-option proposal on changing the mechanism for rent adjustment. Two options base the calculations around the consumer price index while the other two alternatives are modifications of the present system that calculates rents on the median income of tenants in order to reflect affordability. The Housing Department has pointed out that using the index to calculate rent adjustment would be easier and more transparent but would not reflect the whole picture. The latest review came after the authority's defeat in a judicial review over rents. The judicial review was brought by two tenants unhappy with the authority's refusal to lower rents, despite deflation and the Housing Ordinance specifying that they should not be charged more than 10 per cent of their median income.