1) if MC is refusing to transfer flat inyour mother name your mother can execute indemnity bond to indemnify society against any claims made 

2) you and your siblings can execute relinquishment deed to relinquish your share in flat 

3) you can apply for letters of administration from district court on name of your mother 

You can make complaints to registrar of Cooperative Housing Society of your area. By making simple application to you him against society Chairman and Secretary as per the cooperative society act.

You can file a complaint to dy. Registrar about the same he will get the direction

See first the situation has to be transferred in revenue/municipal records. After same is done based upon the transfer of same the flat share certificate can be transfered.

See you can on basis of death certificate first get flat mutated in name of mother and legal heirs then all legal heir can relinquish there right vide registered relinquishment deed to mother and same can be transferred in records and share certificate.

File petition in district court for issue of letters of administration 

2) enclose death certificate of father 

3) schedule of flat in CHS 

4) consent affidavit of you  and  your sister to relinquish your share in flat 

5) your mother would get LA in 6 months if there is no contest 

Hi

First you make a formal representation to the MC under Regd. Post Ack. Due. by appending your Father's death certificate and also a copy of Share Certificate standing in name of your parents. 

Your Mother can give Indemnity against any third party claims.  In case if you have brothers / sisters all of you sign the same as attesting witnesses.

Inspite of all the above, if they do not respond lodge complaint before Registrar of Societies.

You have to make a relinquishment deed and get it registered in favour of your mother and you have to apply for issue of share certificate by the society buy in closing the relinquishment deed so registered in favour of your mother the property will be transferred in your mother's name and the share certificate should be in case you face any more difficulty in this then you have to approach to the registrar of societies to get the direction to the society in this regard you can also go to the development authority and complaint as the development authority is the compitant authority

After father death, mother and children inherited his share equally, certificate will trasfer in joint ownership. 

LOA is costly affair and waste of money and time. Execute release deed in mother`s name, than she will be sole owner and share certificate will trasfer in her sole name.

And non transfer dose not effect ownership on flat.

Dear 

For transfer of share certificate on your mother name first of all you need legal heir certificate from tehsildar and then send an official mail to association along with death certificate of your father IDs of all legal heirs and consent from the legal heirs who want to give up their share from flat so that flat can be transferred to mother name. 

Usually, on demise of a member his/her nominees or legal heirs expect the society to transfer share certificate to them or some of them and submit a copy of death certificate to the society. 

Your deceased father's share in the property shall devolve equally on all the legal heirs of your father.

If all other legal heirs jointly execute a no objection to transfer the share certificate to your mother's name, then the society will accept it and transfer the share certificate  to your mother's name as per law.

For obtaining letters of administration from a court of law, you may have to contact a lawyer in the local who will be able to get it for you by applying for it through a case since this involves technical details and procedures.