Price discount on Duplex purchase when tenants occupy

[Ariane Porry]

Hi all,

I have spotted an interesting Duplex property that I plan to make an offer on. Both apartments are currently being occupied with tenants who have been there for a while now. I've been told that when a Duplex is occupied while the property is being sold, a price discount is usually applied to the offered price. My question is: what amount or percentage of price discount are we talking about ? Is this applicable in all cases or sometimes the price won't be reflected whether or not the units are occupied?

Thank you in advance for your advice, 

Ariane