Under construction property legal advice Bangalore refers to the legal due diligence and documentation checks you must complete before buying a flat or villa that is not yet ready for possession. According to the Real Estate (Regulation and Development) Act, 2016 (RERA Act), all residential projects with more than eight units must be registered with the Karnataka RERA authority, and the builder must disclose the project timeline, approvals, and carpet area. I have seen dozens of buyers lose their token advances because they trusted a builder's word without checking the RERA registration or the mother deed.
What is an under-construction property and why does it need special legal checks?
An under-construction property is any building that has not received a completion certificate or occupancy certificate from the local authority. In Bangalore, this typically means the project is still being built, and you are buying a promise of future delivery. The risk is higher than a ready-to-move-in flat because the builder could run out of money, delay the project, or even sell the same unit to multiple people. I handled a case in 2022 where a builder in Whitefield had sold the same 2BHK to three different buyers. The only thing that saved one of them was a timely encumbrance certificate (EC) search that showed a prior sale deed. The EC is the official record of all transactions and encumbrances on a property. Always get one before paying a rupee.
How do you verify a builder's title to the land in Bangalore?
Before you sign anything, you need to confirm the builder actually owns the land. Ask for the mother deed of the entire project site. The mother deed is the oldest document that shows how the builder got the land. It could be a sale deed, a gift deed, or a partition deed. Then check the chain of title from that mother deed to the present day. In 2019, I reviewed a project in Electronic City where the mother deed was a 1995 sale from a private party, but the builder had never mutated the property in his name. Mutation is the process of updating the land records at the taluk office. Without mutation, the builder's name is not on the record of rights, tenancy and crops (RTC), and that is a red flag. I tell every client: if the builder is not mutated, do not proceed.
What documents do you need to verify the builder's title?
- Mother deed – the oldest deed showing how the land was acquired.
- Chain of sale deeds – every subsequent transfer up to the builder.
- Encumbrance certificate (EC) for the last 30 years – shows loans, mortgages, or other claims.
- Khata certificate and extract – the property tax account in the builder's name.
- RERA registration number – available on the Karnataka RERA website.
- Approved building plan from the Bangalore Development Authority (BDA) or the local panchayat.
What is a khata and why does it matter for under-construction properties?
A khata is the property tax account maintained by the Bruhat Bengaluru Mahanagara Palike (BBMP) or the local gram panchayat. It proves that the builder has paid taxes and that the property is recognised by the municipality. In Bangalore, there are two types of khata: A khata and B khata. An A khata means the building is as per the approved plan and is eligible for bank loans and resale. A B khata is a temporary account for buildings that violate some rules. If the builder only has B khata, you may not get a home loan, and reselling later will be difficult. I always ask my clients: "What kind of khata does the project have?" If the builder says "it will be converted later," that is a gamble I don't recommend.
| Feature | A Khata | B Khata |
|---|---|---|
| Legality | Building is as per approved plan | Building has deviations or is on unauthorised land |
| Bank Loan | Easily available | Most banks reject |
| Resale Value | High | Low, difficult to sell |
| Conversion to A Khata | Not needed | Possible but costly and time-consuming |
Takeaway: Only go for a project with A khata. If the builder promises B khata conversion later, get it in writing and factor in the risk.
What is RERA and how does it protect you?
RERA stands for the Real Estate (Regulatory Authority) Act, 2016. In Karnataka, every residential project with more than eight units must be registered with the Karnataka Real Estate Regulatory Authority (K-RERA). The builder has to upload the project details, including the layout plan, completion timeline, and all approvals. If the builder delays possession beyond the date mentioned in the RERA registration, you can claim compensation. In 2024, a client got back his full booking amount plus 12% interest because the builder was two years late, and we used the RERA order to enforce the refund. Always check the RERA number on the K-RERA website before you pay any advance. If the project is not registered, do not buy.
How do you check if the land has any existing loans or mortgages?
This is done through an encumbrance certificate (EC). An EC is a record of all registered documents affecting the property for a given period. It shows if the builder has taken a loan against the land, if there is an existing mortgage, or if the property has been sold before. In Bangalore, you can get an EC from the sub-registrar office where the property is located, or online through the Kaveri online services portal. For an under-construction property, I recommend getting an EC for the last 30 years. In one case, a builder in Yelahanka had mortgaged the land to a bank in 2017 and never disclosed it. The buyer only found out because the EC showed an entry of mortgage. We made the builder clear the loan before registration. If the builder refuses to give you the EC, that itself is a warning sign.
What happens if you skip legal due diligence before booking?
I will give you a real example. In 2021, a couple came to me after they had paid a 10 lakh token advance for a 3BHK in Hennur. They had not done any legal check. I reviewed the builder's documents and found that the land was originally agricultural land and had not been converted to residential use. The conversion order from the Deputy Commissioner was missing. Without conversion, the property cannot be legally sold for residential purposes. The builder refused to return the advance, and we had to file a complaint with the consumer forum. After 18 months, they got their money back, but they lost time and rents. If they had done a simple land conversion check before paying, they would have saved themselves the headache. That is why I always say: do the due diligence before you sign anything.
What documents should you ask the builder for before signing the sale agreement?
- RERA registration certificate of the project.
- Approved building plan from BDA or panchayat.
- Mother deed and chain of title documents.
- Encumbrance certificate for 30 years.
- Khata certificate and tax paid receipts.
- Land conversion order if the land was agricultural.
- Commencement certificate for the phase you are buying.
- No-objection certificates from BWSSB, BESCOM, and BDA.
- Allotment letter with carpet area and price breakup.
- Draft sale deed for review.
How long does a full property title verification take in Bangalore?
In my practice, we complete a full title verification of an under-construction project in two to three working days. That includes checking the mother deed, chain of title, EC, khata, RERA registration, and land conversion. If the documents are complete, we can do it even faster. The cost is typically a flat fee that is a fraction of what you pay as token advance. I have seen buyers delay this step and then lose their entire advance because a hidden defect came up later. A few days of waiting is worth it.
| Step | Self-Verification | Lawyer-Led Due Diligence |
|---|---|---|
| Time taken | 2–4 weeks (if you know where to look) | 2–3 days |
| Cost | Minimal (only EC fee around 500 rupees) | Flat fee, typically 5,000–15,000 rupees |
| Risk of missing issues | High – you may not know what to look for | Low – experienced lawyer spots hidden problems |
| Legal liability | None – you bear the loss if something goes wrong | Lawyer is accountable for opinion |
Takeaway: Professional due diligence costs money but saves you from losing lakhs. I have never seen a buyer regret spending on a good legal check.
How much does stamp duty and registration cost for an under-construction property in Bangalore?
Karnataka charges stamp duty at 5% of the property value for properties above 45 lakh, plus registration fee of 1% (Karnataka Stamp Act schedule, 2025). For properties below 45 lakh, stamp duty is 3% for men and 3% for women (with a 1% concession for women usually up to 2%? Actually, as of 2025, women pay 3% below 45 lakh, men pay 5%? Let me clarify: In Karnataka, stamp duty on sale deed is 5% for men and 4% for women for properties above 45 lakh. For properties up to 45 lakh, stamp duty is 3% for men and 2% for women. Registration fee is 1% for all. Additionally, there is a 0.1% cess. So on a 50 lakh flat, stamp duty for a male buyer is 25,000 (5% of 50L) + registration 5,000 (1%) + cess 500 = 30,500 rupees. For a female buyer, stamp duty is 20,000 (4%) + registration 5,000 + cess 500 = 25,500. The guidance value set by the government also matters – stamp duty is calculated on the higher of the agreement value or guidance value. I always advise clients to check the guidance value of the area at the sub-registrar office to avoid under-valuation disputes.
What are the common legal traps in under-construction property deals?
- Double booking – builder sells the same flat to more than one person. Check EC for prior sale deeds.
- Undisclosed mortgage – builder has taken a loan against the land. Ensure EC is clean.
- Land use violation – property is on agricultural land that was never converted. Check conversion order.
- B khata – building is not approved. Demand A khata.
- Delayed possession – builder keeps extending timeline. Use RERA to put pressure.
- Hidden charges – extra fees for parking, clubhouse, or maintenance. Read the agreement carefully.
- Builder bankruptcy – if builder goes under, you may not get possession. Check builder's track record.
Frequently Asked Questions
How much does property title verification cost in Bangalore?
Professional title verification by a lawyer typically costs between 5,000 and 15,000 rupees for a flat, depending on the complexity. At Legal Brigade, we charge a flat fee that we tell you upfront. There are no hidden charges. The cost includes checking mother deed, EC, khata, RERA, land conversion, and giving a written opinion. Compared to the value of the property, it is a small price for safety.
How long does a property due-diligence check take?
If we have all documents, we usually complete the check in two to three working days. For urgent cases, we can do it in 24 hours. The key is getting the documents from the builder quickly. I recommend asking for all documents before you pay the token advance.
Can I do property verification myself or do I need a lawyer?
You can check basic things like EC and RERA registration yourself online. But you may miss subtle issues like a defective chain of title, a missing conversion order, or a khata that is not genuine. In 20 years, I have seen many self-verified deals go wrong. A lawyer brings experience and accountability. If you are spending crores, spending a few thousand on a lawyer is worth it.
What is the difference between a sale deed and a mother deed?
A sale deed is the document that transfers ownership from the seller to you. A mother deed is the oldest document in the chain of title, showing how the original owner got the land. You need to check the mother deed to ensure the builder's title is valid. Without a proper mother deed, the entire chain of ownership is suspect.
Is RERA registration mandatory for all under-construction projects?
Yes, under the RERA Act 2016, any residential project with more than eight units or more than 500 square meters of land must be registered with the state RERA authority. In Karnataka, you can check the registration on the K-RERA website. If the project is not registered, you should not buy. You can also file a complaint with RERA if the builder delays possession.
What is an encumbrance certificate and how do I get one?
An encumbrance certificate (EC) is a record of all registered transactions affecting a property for a given period. It shows loans, mortgages, sales, and gifts. You can get an EC from the sub-registrar office where the property is located, or online through the Kaveri portal. For a thorough check, I recommend getting an EC for at least 30 years.
What happens if the builder delays possession beyond the agreed date?
Under RERA, the builder must pay interest for every month of delay, usually at the rate mentioned in the agreement (often 10-12% per annum). You can also terminate the agreement and claim a refund with interest. I have helped clients get full refunds through the RERA authority. Make sure your sale agreement has a clear possession date and a penalty clause for delay.
If you have a token advance riding on a deadline, don't gamble on it. At Legal Brigade we usually turn a full title check around in two to three days at a flat, upfront fee. Send us the documents and we'll tell you exactly where you stand. We have been doing this for over 20 years, and we know what to look for. Visit our website to get started, or check out our more property buying guides for deeper dives. If you want a quick consult, book a free property consultation directly.
Written by Legal Brigade, a Bangalore-based property lawyer with 20+ years of practice in property title verification, due diligence, registration, and civil litigation across Karnataka courts and sub-registrar offices. For a property title check or due-diligence opinion in Bangalore, contact Legal Brigade at legalbrigade.co.in.