This study focuses on developing a BIPV pre-design computational platform combining visual impact assessment, building simulation and energy system optimization. The outdoor exposed surface of a pavilion court building block is evaluated through a physiologically reliable indicator of visibility that determines three scenarios of PV coverage ratio. Solar PV generation and demand for heating and electricity are simulated on hourly basis. Hourly PV energy that does not match electricity needs is used to fit a multi energy hub featuring PV panels, a battery bank and an internal combustion generator. A Pareto optimization is conducted considering levelized cost of energy and grid integration level, without showing a dominant solution: this outcome encourages the development of a Multi Criteria Decision Making (MCDM) tool.