Basketball Kestelman became interested in basketball as a spectator in the 1990s. He began sponsoring the Melbourne Tigers NBL team in the early 2000s and acquired the team in 2012, immediately sacking head coach
Trevor Gleeson. In 2014 he controversially announced that the team would rebrand as
Melbourne United. In 2015, Kestelman secured a majority 51 percent stake in the
National Basketball League in exchange for a A$7 million equity stake. The league was in financial distress with a number of teams close to collapse. In his first year as league owner Kestelman negotiated a new television rights deal, the revival of the
Brisbane Bullets, and a revamp of the league's brand identity and digital platform. He subsequently increased his stake in the NBL to 94 percent.
Property development Kestelman began investing in property at a young age, starting with a block of land in
Caulfield South. He moved from
subdividing residential lots to building
townhouses, later expanding to large apartment blocks in
Footscray and
Southbank.
Telecommunications In September 2001, Kestelman established internet service provider
Dodo Services with his cousin Michael Slepoy and Russian-born Igor Gilenko. He took a 49 percent stake in the company, with Slepoy holding 28 percent and Gilenko 23 percent. The business grew rapidly with a focus on simplifying customer billing, including providing fixed-price plans and unlimited downloads. However, in 2003 Kestelman and fellow Dodo director Mark Baranov were found to have knowingly engaged in "misleading, deceptive and unconscionable conduct", following an
Australian Competition & Consumer Commission (ACCC) investigation into misleading advertising. The company was not fined but was ordered to compensate customers and carry out a trade practices compliance programme.
Other interests Kestelman's holding company is the LK Group. He offered to purchase 50% of the company
Sociabl in 2015, but his offer was declined. As of 2017 his interests outside of property included Philippines-based call centre provider
Acquire BPO, recruitment agency First Avenue, investment firm Oxygen Ventures, digital content firm Newsmodo, human resources firm Wall Street, customer loyalty provider Infinite Rewards, and software companies eCal, eTaskr and Saisei. In April 2023, Queens Lane Capital purchased bed and mattress company Snooze from
Greenlit Brands. ==Net worth==