Kanu leads other political parties in the ownership of property in most major towns.
In a financial statement of its assets and liabilities, the Independence party revealed that it had houses, farms and beach plots worth Sh4.5 billion.
Kanu is one of the 24 political parties out of 51 that have filed their financial statements with the Registrar of Political Parties as required by the Political Parties Act.
Among the parties that have complied are ODM, Party of Action, Alliance Party of Kenya, Kenya National Congress, National Democratic Movement, Ford Kenya, Ford People, Agano Party, Maendeleo Democratic Party, The Independent Party, People’s Party of Kenya, Party of Democratic Unity and Kenya National Congress.
The Republican Party of Kenya, National Alliance, United Democratic Forum and Wiper Democratic Party have also complied.
On Wednesday, Kanu secretary-general Nick Salat said the party had assets of Sh1.3 million and long-term assets of Sh4.5 billion.
“We are not poor by any measure and our competitors should know we are not a joke,” he said.
He laid claim to Kenyatta International Conference Centre, which was taken over by the government in 2003, and said the party would fight to reclaim it.
Mr Salat said the party had houses in Nairobi, Nakuru, Mombasa, Machakos, Meru, Kisii, Kitale, Rumuruti, Kabarnet, Isiolo, Kitui, Narok and Kilgoris.
He said it owned 150 acres in Naivasha and beachfront plots in Lamu and Malindi.
“We also own a house in Kitui and we are kicking out the Vice-President (Kalozo Musyoka) who has been occupying it,” he said.
ODM places its assets at Sh16 million which includes Sh10 million in non-current assets. It has an income of Sh107 million and an expenditure of Sh110 million.
Ford-K says it has assets worth Sh2.2 million with an income of Sh7.4 million and expenditure of Sh5.2 million.
According to the new rules, parties are required to give details of all contributions and donations.
However, only five parties out of the 14 that have declared their financial statements disclosed their sources of income besides the traditional membership fees.