Hi,
The limit Rs. 50000 is per person however it is not clear that in ca the property is owned by two or more person and the single agreement is made then it will considered as one person or not but if you do separate two agreements then TDS provision will not be applicable.
since single owner will give house to two people and rent is Rs. 30000 per person aggregating rs. 60000 still TDS u/s 194IB shall not be applicable so A.O might considered the limit on the side of payer and not payee.
so in My Opinion.
If you don't want any action in future then it is better to deduct the TDS and pay it.
and if You want to deduct then it shall deduct it now and don't wait for scrutiny.
Liability to deduct TDS is arise in the month of March and Interest @1% will be leviable from month of March to Date of Deduction and 1.5% from date of deduction to Date of Payment and penalty of Rs. 100 leviable per day from 1st May to date on which form 26QC is filed.
Yes, Owner can claim TDS as per Form 16C by filling return and if return is already filed then revising the return.