Collect Death Certificate and Legal heir certificate. In addition to these documents you should have ration card, birth certificate, ID card....
What is the process of transferring the property on her name ?
What is the nature of property. Whether it is flat in co op society or it is your husband independent house.
In case of Flat in co op society, Make an application to secretary by enclosing copy of death certificate.
In case of Independent house,Mutate the property in your name. To get mutation done , you need above said documents.
Do we need to get a NOC from the brother of husband ?
Brother of husband has no share in the said property.And also NOC is not recognized as valid as per provisions of TP act.
If you want , you can get a declaration of your ownership from the court, to aviod any future legal challenge to your ownership.
Krishna Advocate 944 796 3440