What isn't covered in section one of a home owner's policy?

It depends on your policy form. Homeowners policies come in the following policy forms: HO-1, HO-2, HO-3, HO-4, HO-5, HO-6, HO-8, HO-10. Then there are also endorsements to add or delete coverage from your policy. If you tell me what basic form you are refering to then I can tell you the Section One coverages.