Sunrise and sunset can be spectacular times for such shots: the reflections become an interesting photographic element rather than something to be eliminated:

1/50 sec f/6.3 (17mm) ISO 400 (no polarizer)

Just meter on the part of the image you want appropriately exposed. (I used spot metering near the door frame.)

The glass on the first two storeys is blue. The warm light of the setting sun balances it; no special white balance settings are needed. Notice the cool look of the sidewalk in the foreground: that's in shadow and, being lit indirectly by the sky, is decidedly blue. The bricks at the top of the building are decidedly warm under direct illumination. If you want to emphasize the building itself, and not the reflection, you might want to cool the white balance slightly, whereas if you want to emphasize the reflection, it might need a tiny bit of warming: but you can see that the sky reflected in the blue glass is not much bluer than the actual sky exposed at the top, anyway. (Transmitted light will have its color altered more radically, whence the pink cast in the windows just above the door.)

Due to the huge range of color in the light sources, image capture in RAW format is almost essential so that you can control the white balance and saturation afterwards. Nevertheless, this image represents almost no post-processing: I removed the lens' distortion (desirable for rectilinear subjects like buildings), increased the contrast by a notch (reflections seem to reduce contrast), and very slightly increased the saturation. To make sure of getting a usable image, I bracketed the shots around this one by about one stop (by varying the exposure time between 1/25 and 1/125 second).