A buyer financing an under construction flat in Hebbal signed his sale agreement, got his loan sanctioned, and was then handed a third document to sign, a tripartite agreement between himself, his bank and the builder. He almost treated it as one more form in the pile. In fact it was the document that tied his loan, his flat and the builder together, and set out exactly how his bank's money would reach the builder in stages. For anyone buying an under construction home with a loan, this is one of the most important pages you will sign.

The short answer. A tripartite agreement is a single contract signed by three parties, the buyer, the lender and the builder, used when you take a home loan on an under construction flat. It links the loan to the specific unit, sets out how the bank will disburse funds to the builder in construction linked stages, and records the builder's acknowledgement of the bank's charge over the flat. The trade off to understand is that it binds you into a staged payment structure, but in return it gives the bank the security to lend and gives you protection that the builder cannot quietly resell or mortgage your unit to someone else.

What is a tripartite agreement?

A tripartite agreement is a contract among three parties rather than the usual two. In a home loan on an under construction property, those three are you as the buyer, the bank or housing finance company as the lender, and the builder or developer. It names the parties, identifies the specific flat and its booking or allotment details, and connects the home loan to that unit, so that everyone is signed up to the same understanding of how the purchase and the financing fit together.

It exists because an under construction purchase has a timing problem. You are paying for a flat that does not yet physically exist in finished form, using money borrowed from a bank, built by a developer over months or years. The tripartite agreement is what makes that three way arrangement work safely, by writing down who pays whom, when, and what happens to the flat as security while it is being built.

Once the building is complete and possession is handed over, the role of the tripartite agreement quietly changes. The security that was structured around a work in progress converts into an ordinary mortgage over a finished, registered flat, and the builder steps out of the picture. Understanding this arc helps a buyer see the document for what it is: a bridge that safely carries the financing across the risky construction period and then hands over to the normal home loan arrangement you would have on any completed property.

Why do lenders insist on it?

Lenders insist on it because it gives them security over a property that is not yet complete. For a ready home, the bank can take a straightforward mortgage over an existing flat, but for an under construction unit the bank is releasing money against a work in progress. The tripartite agreement records the builder's acknowledgement that the flat is financed by the bank and that the bank has a charge over it, which is why most major lenders require one before funding a new or ongoing project.

This is also why the agreement ties the disbursement to construction. Rather than handing over the whole loan at once, the bank releases funds in stages linked to the progress of the building, often directly to the builder and sometimes through an escrow arrangement. That staged flow protects the bank from paying for construction that never happens, and it aligns the money with the actual building of your home.

How does it protect you as the buyer?

It protects you by locking the builder into the arrangement once it is signed. With the tripartite agreement in place, the builder has formally acknowledged that your specific flat is committed to you and financed by your bank, which makes it far harder for the builder to sell or mortgage the same unit to another party. That protection against double dealing is one of the most valuable things the document does for a buyer.

It also gives you clarity on the money. Because the disbursement schedule is written down and linked to construction stages, you can see when the bank is due to release each tranche and against what progress. That transparency helps you spot if a builder is demanding money ahead of the agreed stage, and it keeps the financing aligned with what has actually been built rather than what has merely been promised.

Read down the table and the logic is a balance of commitments: each party gives something and gets something, and the document is what holds the three sided deal together until the flat is complete.

What should you check before you sign?

Check that the flat described in the agreement is exactly the one you are buying, down to the unit number, tower and project, because the whole document hangs on the right unit being identified. Confirm that the loan amount, the interest rate and the disbursement schedule match your sanction letter, so there is no mismatch between what the bank approved and what the tripartite agreement records. Read the disbursement stages carefully, since these decide when your money is released and tie to construction milestones.

Also confirm the project itself is in order before you rely on the agreement. A tripartite agreement is strongest when the project is properly approved and registered with the regulator, because the document links your loan to that project. If anything in the flat identification, the loan terms or the stage schedule does not match what you were told, raise it before signing rather than after, since this is the moment your understanding becomes a binding record.

How does it differ from your sale agreement?

The sale agreement is between you and the builder, while the tripartite agreement adds the bank as a third party. Your sale agreement or agreement for sale sets out the purchase itself, the price, the flat and the possession terms between buyer and builder. The tripartite agreement sits alongside it and brings the lender in, so that the financing, the security and the disbursement are all formally connected to that same purchase.

Because they serve different purposes, you need both to be consistent. The flat, the price and the parties should line up across the sale agreement, the loan sanction and the tripartite agreement, and a discrepancy between them is worth resolving before you proceed. Think of the sale agreement as the deal and the tripartite agreement as the financing wrapper that makes the bank comfortable funding it.

One practical caution is worth keeping in mind. A tripartite agreement makes the financing safer, but it does not by itself prove the project is sound. It assumes the builder will deliver, so it is not a substitute for the checks you do before booking, such as confirming the project approvals, the registered possession date and the builder's track record. Treat the agreement as the mechanism that protects your money's flow, and the pre booking diligence as the thing that decides whether the project deserves your money in the first place.

A seven step tripartite agreement checklist

1. Confirm the flat identified in the agreement is exactly the unit you are buying.
2. Match the loan amount and interest rate to your sanction letter.
3. Read the disbursement schedule and how each stage links to construction progress.
4. Check that the project is approved and registered with the regulator.
5. Confirm the sale agreement, sanction letter and tripartite agreement all agree with each other.
6. Understand how and to whom the bank releases each tranche of funds.
7. Raise any mismatch or unclear clause with the bank and builder before you sign.

Signing with these points confirmed turns the tripartite agreement from a mysterious extra form into a protection you understand. To see how the staged money actually flows, read our guide to home loan sanction versus disbursement for under construction flats, and to understand why a lender's project approval matters, see our note on approved project finance and what it means for buyers.

What is a tripartite agreement in a home loan?

It is a single contract signed by three parties, the buyer, the lender and the builder, used when you take a home loan on an under construction flat. It links the loan to the specific unit, sets out how the bank disburses funds to the builder in construction linked stages, and records the builder's acknowledgement of the bank's charge.

Why does the bank need a tripartite agreement?

Because it gives the bank security over a property that is not yet complete. For an under construction flat the bank releases money against a work in progress, so the agreement records that the unit is financed by the bank and carries its charge. That is why most major lenders require one before funding a new or ongoing project.

How does a tripartite agreement protect the buyer?

Once signed, the builder has formally acknowledged that your specific flat is committed to you and financed by your bank, which makes it far harder for the builder to resell or mortgage the same unit to another party. It also sets out the disbursement schedule clearly, so you can see when funds are released and against what construction progress.

Is a tripartite agreement the same as a sale agreement?

No. The sale agreement is between you and the builder and sets out the purchase, the price and the possession terms. The tripartite agreement adds the bank as a third party and connects the loan, the security and the disbursement to that purchase. You need both, and the flat, price and parties should match across them.

Last updated 2026-07-15. PropNewz Team.