Abstract: A building constructed in log-cabin style has outer walls formed from superposed wooden boards which, on adjacent walls meeting at a corner joint, are relatively offset by half the height of a board. Each board terminates at the joint in a tongue of reduced height and thickness lying flat against a side of a reduced neck of an associated junction block, also of wood, whose enlarged head partly overlies the tongues of two boards of the orthogonally adjoining wall. The tongues and associated blocks may be positively interlinked by mating ribs and grooves, a dove-tail fit or other surface formations; they could also be held together by nails and/or glue. Aligned pairs of boards of the same wall can be held together by similar blocks offset from them by half their height.