Abstract: There is provided a custom cutting and utility board for supporting and laterally securing building materials while carpentry work is performed on the materials. The utility board includes two board sides hingedly attached at their ends for pivotal movement between an open, cutting board position and a folded, closed position. Guide blocks are attached to the upper surfaces of the board sides. The guide blocks are positioned in a staggered arrangement with respect to each other so that when the board sides are folded together, the guide blocks on opposite utility board sides lie between one another. The guide blocks define channels therebetween for receiving and retaining predetermined sizes of building material while the work is performed thereon. The hinges are segmented and sized so that mating edges of the board sides abut each other when the board is in its open, cutting board position, and lie parallel to each other when the utility board is in its folded, closed position.