To answer your query you first need to understand how succession of tenancy rights operate
When a tenant dies, the tenancy goes firstly to any family member who was living with the tenant at the time of his demise and if there is no such family member then the tenancy rights will be succeeded by any legal heir of the deceased tenant
So in case of pugdee properties the succession is a bit different
The first preference is given to the family member and if there is no family member then to any heir of deceased tenant
The provision has used the word 'family member' and 'legal heir ' which is in singular and NOT family 'members' or legal 'heirs'.
So under the law the landlord can transfer the rent bill to any one family member or legal heir
However in most of the cases there are more than one family members or legal heirs
In such cases all the several persons will become entitled to joint tenancy
So in your case the children of your late GF would become joint tenants
However you need to understand that when it comes to succession, a family member living with the tenant (in the sense he has been living with the tenant for quite a long time and considers the pugdee property as his home) would exclude the legal heir/s
In your case you say that your uncle is living in the pugdee house and I'm assuming that he was living in the house even prior to the death of your GF
So as per the statutory definition of tenant in the rent act as explained above, your uncle being the family member would exclude the other heirs of your late GF from claiming any tenancy right
In your case the Landlord is saying that he will recognize any one heir from among the several heirs (which also includes your uncle) to be the successor tenant
However the choice of the landlord may not be agreeable to the other heirs
In such a case the disagreement between the landlord and the heirs of deceased tenant will have to be decided by the small causes court by filing a declaration suit known as RAD which takes years to resolve
So you either have the issue decided by the court or just don't do anything at all and maintain the status quo
However complications will arise when the building goes for redevelopment
For the redevelopment only the occupant of the premises is considered. So your uncle who is occupying the pugdee house will be considered as an eligible occupant by BMC/MHADA and the landlord/builder will allot the new rehab flat to that occupant
The landlord/builder will also have to register a permanent alternate accommodation agreement with the person who is entitled to claim the tenancy of the house
So if the builder registers the PAAA with your uncle then this will lead to disputes as the other heirs would also want to have their names mentioned in the paaa and to be allotted the new rehab flat in place of old premises
So in order to avoid all this it is better that all the heirs enter into some sort of family understanding or arrangement as to who should succeed to the tenancy and be entitled to the new rehab flat when the building goes for redevelopment. If there is no agreement then the matter will have to be decided by the court
As for the transfer fee the landlord cannot legally charge as there is a bar under the rent act. However many landlords do charge transfer fee in case of succession (which is less than what is applicable for a new transfer ) and people do pay such lesser transfer fee in order to have things sorted amicably and to buy peace
As regards charging of the transfer fee again when the successor tenant dies and for issuing rent bill to his heir, again that is not permitted by law, but there can be some sort of understanding arrived at with the landlord, particularly when there are several heirs/claimants
If there is only one heir then nothing is required to be done as that heir would be statutorily recognized as the successor tenant basis the definition of tenant in rent act
Please note I don't provide free legal consultation.