Under-Construction Flat Purchases: Due Diligence Checks Every Home Loan Borrower Needs Before Paying

Buyers of under-construction homes are being urged to carry out proper due diligence before committing money, according to reporting by Business Standard. For a home loan borrower, the practical message is simple: verify the builder, the land title, the project approvals and the payment schedule before you sign, because you begin paying interest long before you get keys.

The risk in an under-construction purchase is timing. Your money goes in early, while the flat is still a plan, and it stays exposed until possession. Any weakness in the project, such as a disputed title, a missing approval or a builder short of cash, lands on you as both a stalled home and a running loan.

This article explains what due diligence involves in practice, how loan disbursement works in stages, what delays cost in rupees, and which mistakes buyers most often make. The Business Standard piece is the starting point. The checklists and arithmetic below are BankCreds' own explainer built on standing rules and typical market practice, not a reproduction of that reporting.

Key takeaways

• Business Standard reports that buyers of under-construction property should not cut corners on due diligence; the reasoning is that money is paid well before the home exists.
• Check the title, the approvals, the builder's track record and the RERA registration before paying any booking amount.
• Home loans for such projects are usually disbursed in stages, so you pay interest only on the amount released, but you still carry rent plus interest if the project runs late.
• Match every disbursement request to visible construction progress and to the payment schedule in your agreement.
• Use an EMI calculator to test whether you can carry rent and pre-EMI together for a delay of a year or more.
• A bank's loan sanction is not a certificate of the builder's quality.

Why under-construction property carries extra risk

When you buy a ready flat, you can walk through it, check the society's records and see what you are paying for. When you buy under construction, you are paying for a promise. The flat, the amenities, the completion date and even the exact area exist mostly on paper.

That gap creates several kinds of risk. There is delivery risk, where the project is late or stalls. There is legal risk, where the land title or approvals turn out to be flawed. There is financial risk, where the builder diverts funds from your project to another. And there is quality risk, where what is delivered differs from what was shown.

India's real estate law, the Real Estate (Regulation and Development) Act, 2016, known as RERA, was designed to reduce these risks. Projects above the threshold size must be registered with the state regulator, and promoters must disclose approvals, timelines and layout details. Under the Act, a specified share of money collected from buyers must be kept in a separate project account to be used for that project's construction and land costs. These are useful protections, but they work best when the buyer actually reads the disclosures instead of assuming they are in order.

The due diligence checklist for buyers

Due diligence is not one big task. It is a series of small checks, each of which can rule a project out. Work through them in this order.

1. Confirm RERA registration. Look up the project on your state RERA website and note the registration number, the declared completion date and the promoter details. Do not rely on a number quoted only in an advertisement.
2. Get the title verified. Ask a property lawyer to trace the ownership of the land over a reasonable period and confirm there are no disputes, mortgages or pending litigation.
3. Check the approvals. The building plan sanction, commencement certificate and any environmental or fire clearances relevant to the project should all be on record.
4. Study the builder's history. Visit earlier projects, speak to residents and ask how long possession actually took compared with what was promised.
5. Read the agreement carefully. The builder-buyer agreement should state the carpet area, the payment plan, the possession date and the compensation for delay.
6. Understand the tax and charges. Stamp duty, registration and GST-related charges vary by state and by project stage, so ask for the full cost sheet in writing.
7. Ask which banks have approved the project. Approval by several established lenders is a helpful signal, though never proof.

The table below shows what each check protects you from.

Check	What it confirms	What can go wrong if skipped
RERA registration	Project is on the public record with declared timelines	No formal complaint route; unclear completion date
Title search	Seller has clear right to the land	Ownership dispute can freeze the project
Sanctioned plan and approvals	Construction is legally permitted	Demolition or stop-work orders
Builder track record	Past delivery behaviour	Repeated delays; poor build quality
Agreement review	Carpet area, dates, penalties	One-sided clauses you cannot undo later
Cost sheet	All-in price	Hidden charges at possession

How home loan disbursement works on a project under construction

Banks generally do not hand over the entire loan on day one for an under-construction flat. Instead, money is released to the builder in stages, linked to construction milestones under the payment plan in your agreement. This is called staged or tranche-wise disbursement.

During this phase, most lenders charge interest only on the amount actually disbursed. This is often called pre-EMI interest. Your full EMI, which repays both principal and interest, typically begins once the loan is fully disbursed, though some borrowers opt to start full EMIs earlier. Terms differ by lender and product, so ask for the exact structure in writing.

Here is an illustration using assumed numbers, not any specific lender's offer. Suppose you take a loan of ₹60 lakh at 8.75% a year, which is within the general band that home loans in India have traded in, though your own rate depends on your profile and the lender. The table shows how pre-EMI interest grows as disbursement rises.

Disbursed so far	Amount disbursed	Monthly pre-EMI interest at 8.75%
20%	₹12,00,000	₹8,750
40%	₹24,00,000	₹17,500
70%	₹42,00,000	₹30,625
100%	₹60,00,000	₹43,750

Once fully disbursed, a 20-year loan of ₹60 lakh at the same rate works out to a full EMI of roughly ₹53,000. You can test your own numbers on the EMI calculator and compare current lender rates on the interest rates page.

Notice what pre-EMI does and does not do. It keeps your monthly outgo lower at first, but it does not reduce the principal. Every rupee of pre-EMI interest is a cost with no reduction in what you owe.

What a delay really costs

Delay is the most common way an under-construction purchase goes wrong, and it is the cost buyers most often underestimate. The agreement usually specifies a possession date and some compensation if the builder misses it, but the compensation rarely covers your actual expenses.

Take an illustrative household. They have taken the ₹60 lakh loan above and are fully disbursed, so pre-EMI interest is ₹43,750 a month. They also pay ₹25,000 a month in rent while waiting. That is ₹68,750 a month with no home to show for it.

If the possession slips by 12 months, the interest and rent outgo together come to about ₹8.25 lakh over that year. If it slips by 18 months, it is about ₹12.4 lakh. These are assumed figures to show scale, and your own numbers will differ, but they show why the delay period deserves a real budget line before you buy.

A sensible test is this: can you carry your rent plus pre-EMI, or your full EMI plus rent, for at least a year beyond the promised date without borrowing more? If the answer is no, you may be buying too early or too big. Check what you can afford through the eligibility tool and read the home loan guides to see how lenders assess your income against your obligations.

Protecting yourself during the payment stage

After you sign, discipline matters as much as research. Each time the builder raises a demand for the next instalment, the bank will usually release funds against it. That is the moment to check.

Use this routine before approving each disbursement:

• Compare the demand letter with the milestone in your agreement, such as foundation, slab or plastering, and confirm the work is actually complete on site.
• Visit the site or send someone you trust, and take dated photographs.
• Check that the amount demanded matches the payment plan and does not include unexplained extras.
• Keep every receipt, demand letter and email in one folder.
• Track the declared completion date on the RERA portal so you notice if it is revised.

If a builder demands payment that runs ahead of construction, raise it in writing before you pay. Paying first and disputing later leaves you with less leverage.

Common mistakes to avoid

Several errors repeat across buyers. The first is treating the bank's sanction as proof of safety. A lender assesses whether its own money is protected. It does not guarantee the builder will deliver on time or to specification.

The second is paying large amounts off the plan, in cash or otherwise outside the agreed schedule, for an early-bird discount. This can weaken your legal position and leaves your money exposed with no stage linked to it.

The third is relying on a verbal assurance about the date, the parking, the amenities or the floor. If it is not in the agreement, it is difficult to enforce.

The fourth is ignoring the rate structure. Most home loans are floating rate, so your interest cost can change over the years. Do not size the loan so tightly that a small rise in the rate hurts. The home loan section explains how rate resets affect EMI and tenure.

The fifth is skipping a lawyer to save a small fee. Compared with a purchase running into tens of lakhs, the cost of independent legal advice is modest.

Frequently asked questions

Is a RERA-registered project always safe to buy?

No. RERA registration means the project is on the public record and the promoter has made certain disclosures and commitments. It gives you a complaint route and a reference for timelines, but it does not guarantee delivery, so you should still check title, approvals and the builder's history.

Do I pay full EMI while the flat is being built?

Usually not. For staged disbursement, most lenders charge interest only on the amount released so far, often called pre-EMI, and the full EMI starts after complete disbursement. Some borrowers choose to start full EMIs earlier to reduce the principal, and terms differ by lender, so confirm yours in writing.

Does the bank's approval of a project mean it has checked the builder for me?

No. The bank checks the project for its own lending risk and legal security. That is helpful as a signal, but it does not replace your own verification of the title, approvals and delivery record.

What should I do if the builder delays possession?

First read the delay clause in your agreement and check the revised date on the state RERA portal. Then write to the builder, keep records, and consider a complaint to the RERA authority if the delay is unexplained. Also review your budget, since rent and interest will keep running in the meantime.

How much buffer should I keep for a delay?

There is no fixed rule, but planning for the ability to pay rent plus pre-EMI or EMI for at least 12 months beyond the promised date is a prudent test. Use the EMI calculator to check the numbers for your own loan.