Possible agoraphobia?

My husband has major depression and so far very little help from any meds tried. Now I fear he is showing signs of agoraphobia. He is afraid to go outside because he has to face his anxiety and fear around the outdoor chores like raking,, mowing, plowing and dealing with downed trees from storms over the last several years. He told me today even sitting out on the porch while I garden gives him anxiety and guilt because he isn't doing anything. He said it is "safer" to stay inside. He will go to church and grocery shopping or to a family thing like grandkids sport, but even those are becoming real effort, due to his depression- he is so very sad all the time. He is not afraid of open spaces or crowds or something that causes an avoidance of a place. So I do not feel it is the classic agoraphobia, but when he said he wants to stay inside where it is safe, that worries me. Where we live there are no mental health providers who are taking any new patients. Does this sound like agoraphobia? Or just another symptom of his anxiety and Depression? I am at a loss of what to do to help him.