Investors & landlords

Maybe I'm overthinking this.

My mom's cost basis for the jointly owned home she and Daddy had that is now a rental.  A couple of people have confirmed how to find the adjusted basis.  They reminded me to add in 50% of the FMV of the property on the date Daddy died.  

According to the property records for 2021, The FMV of the property is $356,500 with a land value of $120,700.  No one advised me to deduct 1/2 of the FMV of the land.   Every response said add in $182,750.

So do I just use $182,750 (1/2 of FMV of property) OR do I use $122,400 (1/2 of FMV of property $182,750 - minus- $60,350 (1/2 of FMV of land).

 

Thanks for your help!!  This is very complicated and I want to get it right!!