You will enter your share. Show it just like you own the whole place in TurboTax at whatever your value is.
So for example, if it is $150K then you enter $75K.
The first year, is the most difficult, so take your time as this impacts many years to come. You will need to know the purchase price, the value of the land versus the building, the fair market value when placed in service.
Rentals can be great tax advantage to you.
