House property income chargeability rests on ownership, annual value, and specific exclusions for business use and exempt categories. Income from house property is chargeable on the annual value of buildings or lands appurtenant thereto owned by the assessee, subject to exclusion of portions used for the assessee's own business or profession. The charge applies to ownership, including deemed ownership, while vacant land is excluded and certain inseparable or incidental lettings may be assessed under other heads depending on the arrangement. The document also lists exemptions and reliefs, including agricultural income, self-occupied property relief, trust income, and specified institutional and trade-union exemptions.