Need to advise client on sale of real-estate:

Property has $120k passive losses carried forward. After sale and accounting for expenses and expenses, depreciation taxes recoup etc. property sale will realize $30k of losses.

TP has no passive income and stock l-term capital gains of around $6k in 2021. 

Is it correct that the balance of realized real-estate losses of $21k just carry forward for future year offsets, or are there any rules / regs that apply to this type of capital loss?

Thanks for the help 

Nolan