The groundbreaking ceremony of ITC Colombo One took place on 19 November 2014 with the attendance of the minister of Economic Development Basil Rajapaksa, and the Indian High Commissioner to Sri Lanka Y. K.

Sixty musicians performed in the concert, including an on-stage collaboration of L. Subramaniam and the Liepāja Symphony Orchestra.

[8] A documentary film titled Making of the Iconic Ahasa One Sky Bridge aired on Ada Derana on 30 May 2021.

The sky bridge accommodates two 50 metres (160 ft) long infinity pools and a jazz lounge and bar.

[9] In May 2021, WelcomHotels Lanka received an 18-month extension to commence commercial operation begins on 1 January 2022 from the minister of Finance Mahinda Rajapaksa.

[11] ITC Limited stated in its 2021/22 annual report that the project impeded by the Sri Lankan economic crisis.

[12] The project completed superstructure construction in of the residence building, the hotel and the Podium, the commercial and retail area in June 2022.

WelcomHotels Lanka received its third extension in seven years from President Ranil Wickremesinghe as the minister of Investment Promotion.

Prime Minister Dinesh Gunawardena and the Indian High Commissioner to Sri Lanka Santosh Jha also participated in the event.