Investors & landlords

@Carl 

Yes, cost basis of ADU (25% portion which is leased to a tenant) is 25% of total purchase price which is 300K.
Now, what portion of 1 million debt be allocated as debt incurred for acquiring the ADU? Is it 25% of 1million (which is total loan amount). Or can I say 300K was incurred for acquiring the ADU portion (Thus in effect saying that debt allocated for Primary Residence portion is 700K and thus entire down payment of 200K was towards the primary residence)? @Rick19744 

Thanks @Anonymous_