For what is worth I'd look at a 5th wheel toy hauler. You could put a mini in it for a run around and covert it into an office when your parted or just set it up as an office and use your pickup to run around in. Seen some really nice "garages" on the toy haulers that would customize into a nice office for two.
Heartland has one with a 17.5" garage, most are 10-12'. Some of the ramps are also useable as patio areas.
2012 Sundance 3100RB w/Reese Goose Box
2004 Ford F350 6.0 L PSD, CC, DRW, long bed, B&W drop ball hitch, Firestone Ride-rite air bags.