You go to an Art Institute, Apophis? This is very similar to a project my me and my classmates are working on, art deco buildings.
Edit: Hehe, nevermind just checked your profile.
I wouldn't worry too much about making this building look "stucco" unless you're going to have some close up shots (you can't tell at this distance from the reference, reproduce what you see not what you want to see). Just make sure you get the right spec and spec power values. The material shouldn't be too hard, but make sure you adjust your lightmass settings so that your shadows give the building the right sense of scale. In the reference you'll notice the shadowing is really soft since it's an overcast day. You'll want to adjust your settings for your light under light>lightmass and tweak the shadow settings. Some lighting can be tuned in the world properties too. So i guess i'm taking back my previous statement about the material and saying you gotta nail the lighting, haha, the materials actually pretty simple