MCD prepares for new mayoral election after incumbent's term ends / NDMC and MCD extend property tax office hours to boost collections / MCD stops parking near Gol Gumbad in Defence Colony after Supreme Court order / MCD begins process anew to select a toll agency for 156 border entry points / In stormy session, MCD leader of oppn gives his suggestions for budget / MCD suspends principal, teacher for slapping Class I student / MCD announces house tax waiver for Delhi residents / MCD plans fresh toll plaza contract to boost revenue / MCD brings Rs 10,000 fine for illegally parked second-hand cars on public roads / Delhi high court upholds MCD's transparent allotment process for parking lot license.