Abstract: In a flooring panel, plural blocks are held by a holding member of a flexible material so that one section is formed by at least one block with a space for laying a cable defined between adjacent sections. A cover member overlying these spaces is arranged to present a surface continuous with the upper surface of the blocks to form a flat, top surface of the flooring panel. The flooring panel is in the form of a rectangular modular flooring panel of at least one shape and size. A plurality of cable laying spaces in communication with one another are defined by laying a plurality of such modular flooring panels on a building floor as a function of the amount of cables to be laid. In such a manner, the operation of cable laying and construction of the flooring panels on the permanent building floor may be performed more efficiently while the interaction between the cables of different kinds is minimized.