The differences in the yields and incomes of commercial and residential property need to be better understood by investors before they commit to a portfolio allocation, a property manager has said.

RiskWise Property Research has forecast solid capital growth in the medium to long-term for property located in Parramatta despite a recent downturn in the Sydney real estate market.

National residency vacancy rates increased in most cities across Australia in December, with material increases recorded in Sydney, according to SQM Research.

The residential vacancy rate increased significantly in Sydney in November compared to other Australian capital cities, while the national residential vacancy rate rose only slightly to 2.2 per cent, according to SQM Research.