Brisbane has proven to be the most affordable and liveable capital city, according to new research.

PRDnationwide analysed each state to find the most affordable suburbs as part of their capital city Affordable and Liveable Property Guide for the first half of 2018.

To measure a suburb's affordability, PRD factored in location (within a 20km radius from the CBD), price growth, rental yields, project development.

Suburbs also ticked important liveability boxes, being within 5km of amenities like schools, parks, shops and health care facilities, low crime rate, and a lower than average unemployment rate.

Brisbane had the lowest entry price and highest rental yield compared to Sydney which had the highest entry price yet the lowest rental yield.

Related: A Welcomed Sigh of Relief for Home Buyers