Letter of administration in mumbai

Your query is not clear.  Who is the owner of the property, and is he/she alive now?  However, the succession certificate from a civil court is necessary.

Legal heirs of deceased owner of property  should get legal heirship certificate from the competent authority. 

the gift deed & the share cert has me(son)/my mom/my bro jointly on it. mom passed intestate in 2015 & dad passed in 2018. we are of chrisitan faith & the flat is Mumbai. we have buyers for the flat. so what is the best docuemnt to transfer her share in a single immovable property in Mumbai. will it be court order so buyers can get their loans approved.  is legal heirship certificate issued by the bombay high court & doesnt need any furhter permission  to sell the flaty once issued. thanks for all your guidance

Repeated earlier as well as today also.

If you are not satisfied with obligation of experts on this platform you should seek professional advise of a local prudent lawyer but it is absurd and ridiculous to repeat same query time and again, which shall not change the opinion and advise of learned experts. 

learned counsel - as is evident from the replies, different experts have provided different opinions. it makes me wonder.....

When dealing with an intestate estate  involving an immovable property in Mumbai, there are specific procedures regarding court documents and sale permissions.

In Mumbai, obtaining a Letter of Administration (LoA) is generally the better and safer approach when an immovable property is involved.

Issued exclusively by the Bombay High Court (for Mumbai jurisdiction) under the Indian Succession Act, 1925. It Grants absolute legal authority to manage, transfer, or liquidate the deceased's real estate. 

If your goal is to sell the flat, apply for a Letter of Administration from the Bombay High Court. While it involves court fees and takes roughly 6 to 12 months, it provides a clean title that buyers and home loan banks require. A mere Legal Heir Certificate often leads to title objections during the buyer's due diligence. Once the LoA is granted (or all legal heirs are recognized), no court or government permission is required to sell the flat.

All legal heirs can jointly execute the registered Sale Deed  directly with the prospective buyer as co-owners.

If only one legal heir wishes to sell, the other legal heirs must first relinquish their rights via a Registered Release Deed (Relinquishment Deed). Once registered, that single heir becomes the absolute owner and can sell without further permission

This is a public forum where various advocates render their opinion, hence it is not necessary that the opinions of all advocates have to conform to each other, you may choose whichever opinion suits you.