He bagged 424,595 votes with ‘Boat’ in all 1,150 polling stations.
His closest rival Ishraque Hossain, the BNP-endorsed candidate, polled 236,512 with ‘Paddy Sheaf’.
Returning Officer Abdul Baten announced the results at Dhaka's Shilpakala Academy around 12:40am on Sunday after the polling held between 8am and 4pm on Saturday.
The turnout was a little over 29 percent with 711,488 valid votes cast. Dhaka South has nearly 2.5 million voters.
The returning officer stopped announcing the results around 10:45pm after the results from 1,075 centres arrived.
“Many presiding officers sent results manually. We also had to take the results manually from those who made mistakes in sending the results using tabs [tablet PCs],” Baten explained.
The BNP has already rejected the results. It called a shutdown for Sunday in protest against “horrific vote rigging, forgery and intimidation”
Both Taposh and Ishraque were new faces in the race.
Son of Fazlul Haque Mani, one of the key organisers of the Liberation War, Taposh is a lawyer and former MP.
Ishraque’s father late Sadeque Hossain Khoka was the last mayor of the undivided Dhaka City Corporation.
FROM MP TO MAYOR
Taposh had to resign as the Dhaka-10 MP before submitting his nomination by the Awami League to the Election Commission a year after winning the parliamentary polls for the third time.
Earlier, he beat outgoing Mayor Mohammad Sayeed Khokon, who was criticised for the outbreak of mosquito-borne dengue fever, in the race for the ruling party’s ticket for the post.
Awami League chief Sheikh Hasina had also recently made Taposh’s brother Sheikh Fazle Shams Parash the chairman of its youth front Jubo League, tasking Parash with freeing the organisation from casino scam ignominy.
Being a member of parliament limits the scope for working for development in the city corporation area, Taposh had told bdnews24.com in an interview, explaining his reasons for contesting in the mayoral election leaving the job of MP.
A developed Bangladesh envisioned by Prime Minister Hasina “will need a developed capital which should be our Dhaka city”, Taposh had said.
He pledged to restore Dhaka to its full glory as a “traditional, beautiful, vibrant, well-governed and developed” city while preserving its heritage in his manifesto.
He also promised to clamp down on illegal encroachment of canals and other water bodies in the city.
Improving the city's waste management system, drainage system, water reservoir and addressing the issue of waterlogging are also high on Taposh's mayoral agenda.
The lawyer defended Hasina in a number of cases. Taposh was also a counsel in the case over the assassination of Bangabandhu Sheikh Mujibur Rahman, most other members of the family and many of their relatives, including Taposh’s father Sheikh Mani and mother Arju Mani.