I am appraising a unique 2600 sq ft one bedroom home in a rural area. The subject also has a 2 br/ 1 bath guest house (no kitchen) with an attached one car garage, a 2 car detached garage with a workshop, a 4 stall barn with tack room, hay room and a bath, also a 4000 +/- sq foot indoor riding arena all located on 17 +/- acres. There are no similar properties around but I am having trouble determining a number to place on the adjustment for these extra buildings (one that can be supported). Any input would be appreciated. Thanks!