A residential outdoor luminaire having a combined junction box and mounting arm that allows for canopy mounting as well as mounting on a vertical surface is provided. The luminaire housing has a rear beveled mount surface which engages a junction box mounting arm. The junction box mounting arm has at least one side wall and a hollow interior with an outwardly extending mounting flange. The sidewall has a beveled mounting face engageable with the rear bevel mount surface of the luminaire such that the junction box mounting arm may be mounted against a vertical or horizontal surface while maintaining the luminaire in a similar orientation with respect to the area being illuminated.