Everything is lightmapped at pretty high resolution for most objects. I wanted dynamic shadows from the trees, but considering this was done mainly for Oculus, I had to disable that feature, due to the insane judder it creates when viewed with VR. Also, I have 4 planes under an angle outside the windows, emitting light for that extra brightness inside the apartment. Another thing, which helps the realism is my lack of will to optimize much. The whole scene is 1.5m polys, but runs well even on a laptop with a 6 series GeForce. On my 780 GTX its getting between 70-100fps.
Side note: Cannot wait for dynamic GI one day!