2 Properties on 1 deed

[James W Swindell Jr.]

Dear fellow investors.

I am a new investor. I have an opportunity to buy a property listed on zillow 2bd and 1 bath SFR built in 1966. After talking with owner, I found out it is 2 properties (houses) on 1 deed and it has a lien on it. He is renting out both properties. When calculating an offer, besides inputting repair cost and the cost of the lien, would the value of both properties be similar to what is on zillow and redfin for the one property that is listed? I don't see the other property listed on zillow or any other site.

Thanks.

James