Here are some of the original sketches for Tony Stark's house. Production Designer Michael Riva mandated a Malibu cliffside home in the vein of John Lautner's really organic cast concrete & glass homes. The first designs were for set extensions of existing homes, but nothing we scouted looked like a billionaire's home. A few multi-millionaires homes but...
So I came up with this design and perched it in the most decadent location I could think of, right on top of Point Dume, a California State Park. Who else but a billionaire could get those building permits?
The garage under the cantilevered livingroom I really liked, looking out over the ocean between the buttresses. Since that's where Tony really lives, it should still have a nice view. The actual garage set is three times the size of the livingroom and would never fit in that space below, but thanks to the magic of movie geography, it's never apparent.
Master set designer Kevin Cross took these along with some loose elevations and built a beautiful model in Maya which the VFX companies used for reference. While the interiors were fully realized sets on stage, only the exterior of the living room balcony was practical, the rest of the exterior of the house is a CG model composited into plates of Point Dume.
I'll put up some of the interior designs next.