An interesting challenge! I started with just a couple of cubes and messed around with different combinations of the sun, atmosphere, IBL and True Ambiance (actually with B7 it's True Diffuse). While these were rendering I created a house model in Modo sort of like where I grew up. Finished up with 9 terrains that make up the yard and some Bryce trees and bushes. Most of the textures are Bryce procedurals except the brick and shingle on the house which were created in Photoshop. The final render was set up with the IBL set at 256 and a Ray per Pixel of 64 (to rid the image of most the TA snuz). I had to scale down the image size so it would take "only" about 38 hours to render on 4 cores of a 2.26GHz MacPro. Thanks for looking!