The supplementary planning document (SPD) identifies several key mixed-use sites and opportunities to improve the public realm. Associate Matthew Lappin said: "The public realm's quality is a key consideration in this busy gateway location."
The SPD sets out a tariff approach for funding public realm projects and this will form part of a section 106 agreement with developers. It focuses on improving Station Square and Station Street, including a state-of-the-art bus interchange and landmark buildings.
The aim is to enhance the setting for the grade II listed station and Commercial Road, once the principal historic route through the city. A detailed scheme for public realm works is set to cost around £2.25 million, according to Lappin.
Total investment required for the area is more difficult to estimate but the SPD will enable landowners and developers to bring forward plans, he added. The document will be adopted by Portsmouth City Council by the end of the month.