Outdoor Man's building is the front of a Bass Pro Shop. Based on the roof line the chain's store in Rancho Cucamonga, CA, the closest to the sound stage lot in Studio City. The signs are altered with CGI. The Rocky Mountains are superimposed behind the store to place it in Denver. Neither the Denver, nor Colorado Springs Bass Pro Shop stores have the same foliage or roof line as the shot used in the show.
When the front of the house is shown in an actual scene the front door is in a deep alcove with a window to the left of the door. When the exterior of the house is shown from the street (typically between scenes) the front door is almost flush with the front of the house and no window to the left.