He recently talked to the media about his life story and also gave them a tour of his posh crib.
Mulundannume built his first house in Kalamba village in Kiganda sub-county, Mubende district. That was before marriage.
At 24, when he got married, he shifted to Mityana district and built another house there.
He's now 64.
He then came to Kampala and built in another house in Lungujja, Lubaga division in Kampala.
When John Sebalamu, the proprietor of Freedom City Mall, was shifting to Bwebajja, he sold his house in Najjanankumbi to Paul Ssembatya.
Ssembatya has been with his wife, Milly Nakibala, since he built his second house and the current one is their fourth.
The house was built on an expansive property that has a banana plantation and a poultry farm.
A staunch catholic, Mulundannume included a prayer room in his crib.
The businessman, who recently held a flashy wedding, said he always felt bad that he hadn't walked Milly Nakibala down the aisle.
Among his grandfather's children, there is a reverend father, two nuns, and a religious brother.
His father and mother were together for 72 years and they're wedded.
In May, Paul Ssembatya and Milly Nakibala wedded Nakibala at St. Mary's Cathedral Rubaga in Kampala. Their wedding reception was hosted at Kigo Gardens, located along Kigo Road in Kampala.
Reports indicate that his friends footed all the wedding budget.
He said he's built trust among his friends over the years and that's why they offered those heavy financial contributions toward his wedding.
Even the King of Buganda entrusted him to purchase all materials for building Masengele, one of the administration blocks at Bulange, Mengo in Kampala.
He said the Kingdom's prime minister didn't even commit him to signing any agreement. He had previously implemented many other projects for the kingdom.
When he was in the early days of business, he would get loans from notable businessmen like Amirali Karmali, alias Mukwano, Karim Hirji and Joseph Behakanira, among others.
He said none of them can say he ever cheated them.
He said the most important asset a person can have is land.
Paul Ssembatya revealed that he inherited the name Mulundannume from his father who was the first Muganda to rear bulls for meat production.
Watch the video below: