Local authorities make periodical assessments of all properties within their jurisdiction. Such valuation could be taken as evidence of earning capacity of a building. This is not conclusive evidence, however. In large metropolitan cities (Chennai, Delhi, Kolkota and Mumbai) municipal authorities typically net rateable value after deducting 10% of the gross rateable value on account of repairs and an allowance of service taxes. The net municipal valuation requires an adjustment for determining expected rent. for income-tax purposes.