This was an interesting project for a developer in one of the more fancy areas in Oslo.
Originally this was done during winter, with snow on site, but the client wanted a spring/summer look some time into the project.
The were a lot of trees on the edges of the plot that needed to be retouched away and to a certain degree added in 3d to the scene.
Reference material consisted of some 2d CAD drawings from the architect that were severely misaligned so heights and lengths etc. would not match up.
I decided to use Nuke for post as this was a project with an unending list of last minute changes and revisions, and to a certain extent it saved me a lot of time redoing post stuff.
I assembled the environment photos as a lat/long environment map, and used it directly in Nuke with separate cameras from the Max scene (with tweaks).