Abstract: A ladder support apparatus includes a generally U-shaped roof attachment portion having a pair of spaced apart legs connected at rearward ends to a base. The legs have apertures formed therethrough to receive nails which will releasably fasten the roof attachment portion to the roof or other portion of a building. A ladder retention portion includes a strap formed into a loop, with the upper end of a ladder slidably journaled through the loop. The ladder retention portion is connected to the roof attachment portion of the ladder support apparatus, to retain the upper end of a ladder in position relative to the roof attachment portion.