First you registered FIR regarding original house document has been lost. and later apply in the SRO for duplicate copy of sale deed than submit FIR copy and duplicate copy of house documents in the bank.

Obtain certified copy of documents from sub registrar office and file missing to police.

Providing loan or not, this bank will decide but at least you should have certified copy of documents. 

On the basis of photo copy, almost to impossible.

Apply for certified copy of sale deed from sub registrar office 

issue public notice about loss of original documents 

also lodge police complaint about loss of original documents 

You need to approach a lawyer who would put advertisement of loss of your Original Link documents in two Newspapers and inviting general public for their objection giving two weeks time to approach you or your lawyer to put the claims over the property of loss of link documents. 

After two weeks, a title certificate is needed from your lawyer certifying the ownership of of property of loss of Original Link documents. 

Both News paper advertisement and title reports will be required to be submitted to your bank for loan purposes. 

Dear Sir,

You may got the Link Document attested by the Notary as document to be true. 

- You can get certified copy from the office of the Registrar , after giving the details of your house .

- Further , the said certified copy is having legal value for all purposes. 

1. you can get the certified or duplicate copy of the document by applying to the concerned revenue department,

2. you can get the certified copy by simply applying through an application,

3. for getting a duplicate copy, you are required to lodge a complaint regarding loss of the original copy and on the basis of the complaint you can obtain a duplicate copy 

1. Using the available photocopy of link documents, you may prefer to apply to local SRO office for "Certified Copy" of the link agreements.  This will be sufficient for Bank Loan purposes.

2. Do the above preferably thru a local document registration agent.

If the missing link document was a registered document then you can easily get certified copy from the Registration office. 

Certified copy can establish the title as appearing on the certified copy. 

Obtain certificate copy of the same from concerned Sub Registrar Office or from Mee-Seva.

That will suffice your requirement.

You need to get certified copy from bank if you need

If it is a registered document then you give a complaint to the police about the missing document and then give a public notice published in a local newspaper and then apply for a certified copy of the registration document.

Apply for a duplicate copy from land revenue department 

A copy of the document can be obtained by applying to the builder and the registrar office.

Please write in detail.

1. You may file a police complaint (FIR) for the lost document. 

2. The police will give a lost certificate for the same.

3. You may apply for the certified copy of the lost document from the sub-registrar office. 

No bank will entertain Xerox copies of a deed or any other property document. Even if a single original paper is missing, the bank will reject the home loan application.The solution to this issue is to first lodge an FIR, then, publish an advertisement in 2 local newspapers, and then, approach the relevant authority to issue a new original document. The whole process can take 2–3 weeks, but, it is the only solution to resolve this issue.

You should apply for certified true copy of document from office of sub registrar.