<< Graphics`Graphics3D`

data0  =  
      Table[{x, y, 0}, {x, 0, 2}, {y, 0, 5}]
data1  =  Table[{x, y, 1}, {x, 3, 5}, {y, 0, 5}]

dataJ  =  Join[data0, data1]

MatrixForm[data0]

MatrixForm[data1]

MatrixForm[dataJ]

?ListSurfacePlot3D

ListSurfacePlot3D[dataJ, Axes -> True]