$4,200,000 finished
Rental income makes this property a best buy! If you live in the garden triplex, there is rental income from the upper floors of potentially $8,000/month. Depending on your tax situation, at 5% interest amortized over 30 years this could pay for $1,400,000 to $1,500,000 of your mortgage! Therefore this is like paying $2,700,000 to $2,800,000 for a finished, south-garden triplex! (This assumes rental income is applied to the mortgage and not to building expenses.)