Very well done - the materials and finishes are good! Your construction details are believable, too. One comment: The trees to the right are not to the same level as the building.
Excellent! I think there are two things which detract from the realism. The galvanized metal material is too strong in contrast and the background trees look pixelated.
I don't think the issue with the galvanized metal is really contrast - its too bright overall and needs deeper shadows, but it's also too cold for the warmth of the light. Try dialling back the blue on that and they'll sit down better in the image.
Thanks a lot for feedback, guys. It is always useful to have someone commenting your work. I believe you all know how indulgent one can be with his own work when he is working at the same image for a long time...luckily i will have to slightly change the model, so i will have to put my hands back on this. Updates soon (and those trees will be the first ones to be substituted, i swear)
Here's the update. Added some PP details such as signs and so on. The trees on the right are still out of scale and a littl bit messed, but that was the shadow i needed on the ground and didn't have time to set new trees.
Shot at 2007-07-15
Looking much better now! I don't know about the man in the render. The more I look at him, the more he looks like he's dancing. I guess he is just posed funny?