Commercial real estate, property rights change, is it better to send a notice to inform the owners, or to sign another agreement?

If the previous property management mode has been recognized by you and the owner, then you can continue to use it. If both parties or one party does not approve, then directly inform the owner that the property has been changed. After the previous property contract expires, both parties will renegotiate and sign a new agreement. But now that your property has been changed, whether it is necessary to change the agreement now or not, at least inform the owners that their administrator has changed.