Investors & landlords

I have done my parent's taxes for the past ~ten years and did not even know that some of their properties were inside the LLC until a couple of years ago (before dad pasted) when they sold one that was in the LLC.

 

I will have my mom dig out the taxes that were done outside of TurboTax to see if it was mentioned. What is the form I will be searching for? Or What else should I look for?

 

Mom is 91 and I am 90 minutes away and sick right now. But we will be working on this ASAP.

thank you for helping us,