help to model these facades

[Soytei]

 Hi everybody,

I´d like to know if you can help me with the modelling of the exteriors facades of my building. I´ll really apreciate tricks or guidance to know how is the best way to do it and the best way for a good final image.

all coments are welcome.

Many thanks in advance. If you want to check the address via Google maps is Via laietana nº 7,8 Barcelona.

[Sahay_R]

Create a piece of the wall that is the height of the total building, with the windows in it. Make it into a group (the shaded portion of my screenshot). Array it as many times as you need.

Creating a curtain wall would be another option.