This image feels like it should have been submitted to the WIP thread. There is a lot of work to be done on the site and surroundings. The house is so attentive to details that it is a shame that the same level of care was not given to the site.
Adding more elements for the site and surroundings will not only make the rendering less sterile, but will also help with the realism of the image (Ex. the reflections on the windows will greatly benefit from this.)
The second rendering is a lot better in terms of light and shadows
EDIT: After looking at the file provided, a couple of suggestions for future reference:
a. make sure your model is close to the origin, (the further away from the origin, the less precise measurements are)
b. make sure you clean up any elements that you wont use anymore,( this includes splines, imported cad shapes, etc.) unless you plan on making changes to those elements, I would remove them, decrease file size, improves navigation through the scene as well.
Hope this helps