A 48-year-old man escaped injury as fire gutted a single-story Kaimuki home last night. The fire was reported at 3028 Kaimuki Avenue, near Kapahulu Avenue, just before 6 p.m.  It was controlled about 15 minutes later.  The man, who lives with his mother, was the only person in the house at the time. Fire Captain Ah Mook Sang says the fire appeared to have started in the back of the home and it destroyed the home. The cause is being investigated.