out manually subsequently for this purpose the leveling element 48 is screwed to the spatial unit 1 1 and the individual foundation 46 but can also be set into the concrete of the individual foundation 46 for the thermal insulation of the building construction which is formed from the spatial units 1 with respect to the subsoil 50 floor side outer wall elements which are provided with thermal insulation as floor terminating elements 20 a preferably have the same width and the same length as the associated spatial units 1 1 1 2 1 5 and terminate flushly with the outer edges of the frame which is formed from the crossmembers and longitudinal carriers 6 10 a 10 b are provided below the spatial units for example below the lower spatial units 1 1 1 2 1 5 which are shown in fig1 b here the floor terminating element 20 a can be attached to the lower spatial unit 1 1 or can be connected to the latter via a non illustrated screw connection the flush termination of the floor terminating element 20 a and the outer wall element 20 22 with the outer edge of the spatial unit results in a bent in corner in the corner region which bent in corner as shown in fig2 can be filled in turn by a floor side corner element 26 the floor side corner element 26 has thermal insulation 26 b which is enclosed by the end sides of the vertical outer wall element 20 22 the floor terminating element 20 a and an outer lining 26 a as was already also the case in the corner region see fig2 of the spatial unit 1 the lining 26.