Documents Needed to Sell a Flat in India: The Seller's Checklist

You have found a buyer for your flat, agreed a price and taken a token amount. Then the buyer's lawyer sends a list of documents, and you realise half of them are in a cupboard at your parents' home, one is with the bank, and one you have never seen.

This is where many sales slow down. A buyer's lawyer and their home loan bank will both check your papers closely, and a single gap can push registration back by weeks. The good news is that almost everything can be gathered before you even list the flat. Here is the full checklist.

1. Proof that you own the flat

Your registered sale deed

The original registered sale deed (or conveyance deed) in your name is the core document. If you bought from a builder, you may also have the allotment letter, the builder-buyer agreement and the possession letter. Keep all of them.

The chain of previous deeds

Buyers' lawyers usually trace ownership back 30 years, or to the original land owner for a newer building. For a resale flat, gather every earlier sale deed. For a builder flat, the developer's title documents, the joint development agreement with the landowner and the "mother deed" form the chain. If the building is relatively new, ask the builder or your association for copies.

If you inherited or received it as a gift

You will need the will and probate (where required), or the legal heir certificate, death certificate and release deeds from other heirs, or the registered gift deed. Make sure the khata and tax records have been moved to your name.

2. Approvals for the building

• Occupancy certificate (OC) from the local authority. It confirms the building was completed as per approved plans and can be lived in. Many banks won't lend to buyers of flats without an OC.
• Commencement certificate and approved building plan, usually held by the association or available from the builder.
• RERA registration details for newer projects.

If your building has no OC, tell buyers upfront. Hiding it only makes the deal collapse later.

3. Encumbrance certificate (EC)

The EC shows registered transactions on the property, including mortgages, for the period you ask for. Buyers usually want it covering 13 to 30 years, ending close to the sale date. In Karnataka, you can apply for an EC online through the Kaveri portal of the Department of Stamps and Registration. Get a fresh one just before the agreement, because an old EC won't show recent entries.

4. Khata and property tax papers

Khata

The khata shows that the property is recorded in your name with the local body for tax. In Bengaluru, an e-khata is now needed: sub-registrar offices have been told not to register property sales without one, and the city made e-khata compulsory for all properties from July 2025. Download your e-khata from the official portal well before listing, and fix any errors in name, area or address. Corrections can take weeks.

Outside Bengaluru, check what your local municipal body or gram panchayat issues and what the sub-registrar asks for.

Property tax receipts

Keep receipts for the last several years, or at least since you bought the flat. Clear any arrears before the sale. A buyer's bank will not like unpaid tax, and the arrears legally stay with the property.

5. Society or association papers

• No objection certificate (NOC) from the apartment association or housing society, if your bye-laws require one.
• No-dues letter confirming maintenance, sinking fund and other charges are paid.
• Share certificate if it is a cooperative housing society, which will be transferred to the buyer.
• Parking allotment letter, if your parking slot is specifically allotted.

6. Your home loan papers (if the flat is mortgaged)

If you still have a loan, the bank holds your original documents. You will need:

1. A loan outstanding letter showing the exact amount due on a date.
2. A plan agreed with the buyer and their bank to pay off your loan from the sale money.
3. After closure, a loan closure letter or NOC, the full list of returned original documents, and release of any charge registered with the authorities.

Ask your bank early how long they take to return documents. Some take two to three weeks.

7. Utility and service records

• Latest electricity and water bills, with no dues (in Bengaluru, BESCOM and BWSSB).
• Gas connection papers if there is piped gas.
• Receipts for any big repairs or renovations, which also help with tax.

8. Identity and personal papers

• PAN card. It is needed for any property deal above ₹10 lakh.
• Aadhaar and passport-size photographs.
• If any owner can't be present at registration, a properly drafted and registered power of attorney.
• For NRIs, passport, visa or OCI card, and an overseas address. The NRI rules on tax deduction are different, so plan for that early.

All co-owners named on the title must sign the agreement and the sale deed.

9. Tax papers for your own capital gains

The buyer's lawyer won't ask for these, but you will need them to work out your tax:

• Purchase cost proof: your sale deed, stamp duty and registration receipts, brokerage paid.
• Improvement bills: renovation and extension costs with dates.
• Form 16B from the buyer, showing the 1% tax deducted if the price is ₹50 lakh or more. Check it appears in your Form 26AS.
• Guidance value of the property on the sale date. If you sell more than 10% below it, the guidance value is treated as your sale price for tax. This rule continues under the Income Tax Act, 2025.

Gains on a flat held more than 24 months are long-term. For sales after 23 July 2024, they are taxed at 12.5% without indexation, with the option of the older 20%-with-indexation method for resident individuals and HUFs who bought before that date. If you plan to buy another home, the reinvestment exemption that was Section 54 (now Section 82 of the new Act) may apply. Ask a CA to calculate your tax before you sign.

Common gaps, and how to fix them

• A missing previous deed: apply for a certified copy from the sub-registrar office where it was registered.
• Khata still in the old owner's name: apply for transfer with your sale deed and tax receipts before you list.
• No OC: check with your association if one has been applied for. Disclose the status to buyers.
• Name mismatch across documents: a notarised affidavit or a correction deed, depending on the error. Get a lawyer's advice.
• Originals with the bank: get a list of documents from the bank and share copies with the buyer.

Every property has its own history, so have a lawyer review your papers before you list. If you want help putting the file together, checking for gaps and keeping the sale on schedule, Skyros Estates offers selling support with document checks.