All - I am a simple homeowner (not at contractor/builder) - We live in AZ - on the side of our home have an area where a person could park an RV, boat or other recreational item. The area currently has crushed rock spread on the ground. I want to have the current double doors replaced. Lowes supplied the offer, but also came back with the regulation for a landing. There has never been a landing for this exit and i worry if one is put in place I may cause rain water to collect against the home foundation, which will cause other problems. Some homes in our community do not have exterior doors other than the large garage doors to give cars entrance with an interior door entering the home. My question - since this door is in a garage and is not used necessarily for emergency egress does it fall under the Building Code R311.4.3???