Abstract: The invention relates to structural building elements suitable for construction of a log house made of wall boards (47) placed on top of each other and joined to one another so as to form the walls (59) of the house and to building structures formed from said building elements. Wall boards (47) are retained in grooves of corner support members and, if desired, of additional intermediate support members which are formed of corner support elements (1, 50) placed on top of one another. The thickness of the wall boards (47) is less than that of the freely outwardly projecting head pieces (9) of the support elements (1, 50). Two respective corner support elements (1) are topwise and crossingly joined in interengaging relationship to form a joint assembly. Multi-notched stacking profiles (27, 29), which interdigitate firmly, stabilize the stacked joint assemblies.