S. 80IB(10) : Housing projects-Building competition certificate-Mere delay in issuing competition certificate-Exemption cannot be denied-Inner measurements of a residential unit as well as projection or balcony would form part of built-up area-Within a composite housing project, where there are eligible and ineligible units, assessee can claim proportionate deduction in respect of eligible units-Higher GP rate cannot be a sole decisive factor for declining an assessee’s claim of deduction-Period during which lockdown was in force in view of COVID-19 pandemic, would stand excluded for purpose of working out time limit for pronouncement of orders, as envisaged in rule 34(5). [S. 255, ITAT R. 34(5)]