Joint House Property Tax Treatement

My client have 3 residential house property, one is self occupied & another 2 is let out , all of 3 properties  he include his wife name as a co-owner in deed & loan agreement , but EMI of those property paid by him from his single bank account . Is he treated as a deemed single owner or co-owner  of those properties in the income tax view? the entire rent  of let-out house property credited in his wife bank account, is this rental income include his wife ITR at the time of computation of Income ?