Abstract: The set of modular timber hollow bricks with thermal insulation properties includes wooden hollow bricks, marked as A and B which have a box structure. Hollow brick A and corner hollow brick B include two boards connected by crossbars in such a way, that they form a peripheral socket on the inside for a connection with the connector. The corner hollow brick B also has a connector on the side surface of the board. Each hollow brick has a circumferential socket, the size of which corresponds to half the thickness of the connector. The corner hollow brick B has a notch on the lateral surface. The hollow brick A and corner hollow brick B have each an additional reinforcing bar inside. The socket is filled with sealing foam before assembly.