This is the sketch I drew from which I built my Woods house. If you show this to your builders, it should clear things up.
Note.....with an 8' height to the monitor, my back wall height is 56 inches.......or 4'8".
BTW, I started my roost height out at about 36 inches but eventually moved it up higher, as the birds could see the top plate of the back wall framing and kept hurling themselves at it so as to try to get higher. So I moved it up to about 48" or 4 feet, and up that high, they could see there was no place to land so quit trying.
Roost bars must be higher than the nest boxes. Nest boxes should have at least 45 degree sloped roof so that can't perch up there.
Note.....with an 8' height to the monitor, my back wall height is 56 inches.......or 4'8".
BTW, I started my roost height out at about 36 inches but eventually moved it up higher, as the birds could see the top plate of the back wall framing and kept hurling themselves at it so as to try to get higher. So I moved it up to about 48" or 4 feet, and up that high, they could see there was no place to land so quit trying.
Roost bars must be higher than the nest boxes. Nest boxes should have at least 45 degree sloped roof so that can't perch up there.