Abstract: A siding board and conduit holding system for forming the border of a dwelling wall while holding wiring and other like conduits comprises a plurality of elongated compartments each including a first wall, a second wall, a third wall, a fourth wall and a pair of end walls. The first and third walls are positioned opposite of each other. The second wall has a break therein to define a first portion and a second portion. The first portion is frictionally couplable to the second portion. The third wall is pivotally coupled to the fourth wall such that the third wall defines a door. At least one of the elongated compartments may be positioned along an edge of the dwelling wall such that the first wall is attached to the dwelling wall. Wiring is positionable within the compartments to be extended along the dwelling wall.