Commercial building rent is house property income or what

Dear Members,

 

we are constructed a commercial Building and its let out to corporate offices and i was paid total interest of Rs. 3.5 Lkh on loan taken for the purpose of this commercial building construction.

 

Now my query is

1.) Rent Received on Commercial Building is House property Income or Other Sources?

2.) I am eligable of claimimg notional deduction @ 30% U/s. 24 (a)? 

3.) Total Interest of Rs. 3.5 Lkh is allowable or Only 1.5Lkh is allowable U/s. 24(b)

4.) My loan was sanctioned on the name of Housing Loan  

 

Please Tell

Thanking you