Grandfathers house will document lost.

It is believed that you are all Hindu.

The property is at which location?

Confirm!

You have posted that The WILL registered?

Does anyone have a copy?

Is there any dispute amongst Legal heirs?

Was the WILL duly acted upon without any cloud on it as per procedure and rules of Testate Succession?

Was its certified copy submitted to authority under whose jurisdiction property falls say; MC, along with death certificate, legal heir certificate, NOC of legal heirs?

All legal Heirs are hindus and property is located at visakhapatnam, andhra pradesh. As i mentioned will document is not registered and all legal heirs are unaware of the will document written matter. All legal heirs are mutually agreed and ready to create a document as per hindu act procedures. And we didnt submitted to local MC, jurdiction or authorities.

Reply to all points, pointwise.

You have modifed your last post.

Consider registered family agreement mentioning exact shares and boundaries.

Approach with case file a very able local senior counsel of unshakable repute and integrity specializing in such/civil matters for a considered opinion. 

Obtain legal heir certificate.It may be required.

Usually it is issued by O/o Tehsildar.

If there is NO dispute everything is possible.

Settle the matter amicably and register the agreement.

Local counsels can help, as already suggested and draft the agreement and it may leave NO scope for future litigation.

You are welcome.