Perth City Council was preparing new planning controls for King Street in an attempt to protect its historic buildings and prevent the area losing the character that distinguished it from other parts of the CBD.

King Street contained some of Perth's remaining late 19th century architecture, including warehouses and terraces. Architect Paul Jones said only a few years earlier Howard Street had looked much the same, but demolition and redevelopment had removed much of its historic character.

Jones said King Street's narrow roadway, mirrored glass windows and other modern features had already begun changing its appearance.

The council had released draft guidelines requiring the complete building facing the street to be retained, rather than only its facade. Public submissions had closed and a final report was expected later in 1991.

The precinct contained buildings listed by the Australian Heritage Commission and others classified by the National Trust of WA. The council's proposed controls aimed to encourage the use of the street by pedestrians, discourage motor vehicles and provide incentives to offset the cost of retaining and restoring historic buildings.

Jones said the controls could help turn King Street into another Hay Street Mall while retaining the dynamics of the street. He also wanted architectural designs in the area to complement its existing character through elements including paving, cafes, tables and chairs.

There were also proposals to convert upper levels of King Street buildings into residential apartments. Jones believed loft-style accommodation could attract people wanting to live in the city, while adding residents could help keep the street active outside business hours.

Curtin University architecture lecturer Ian Kelly supported retaining King Street's character but warned against simply copying older architectural styles. He argued new buildings should be recognisably contemporary while still respecting the existing streetscape.