Property purchase due diligence refers to the legal and financial investigation you do before buying a property to confirm the seller owns a clear marketable title and that the property has no hidden loans, disputes, or approval flaws. Under the Transfer of Property Act 1882 and RERA Act 2016, a buyer inherits only the rights the seller holds, so any defect in title passes to you. According to the Karnataka Stamp Act 1957 schedule (2025), failing to verify an encumbrance certificate before registration can leave you liable for an unreleased mortgage.
I've been a property lawyer in Bangalore for over 20 years. In that time, I've seen dozens of buyers lose their life savings because they skipped due diligence. One client almost registered a flat in Whitefield last year—I found a bank mortgage from 2012 that the seller had never repaid. Another buyer paid the full advance on a site in Electronic City, only to learn it was B khata and couldn't get a bank loan. These are not rare stories. They happen every week in Bangalore.
What Does Property Due Diligence Include?
Property due diligence is a bundle of checks. You start with title verification—tracing ownership from the original grant or sale to the current seller. Then you check the encumbrance certificate (EC), which records loans, mortgages, and legal dues. You also verify the khata, the property tax paid status, the layout approval, and the building plan sanction. In apartment purchases, you need the RERA registration number and the occupancy certificate.
Here's a checklist of documents you must see before you pay any money:
- Mother deed or the oldest available title document (shows how the property came into private hands)
- Chain of sale deeds for the last 30 years (or at least 13 years under the Limitation Act)
- Encumbrance certificate for the last 13 to 30 years from the sub-registrar
- Khata certificate and extract (A or B khata matters for loans and resale)
- Property tax paid receipts for the last 5 years
- RERA registration certificate and quarterly updates (for apartments)
- Occupancy certificate and completion certificate (for apartments)
- Approved layout plan or conversion order (for sites)
- NOC from the relevant authority if the property is near a lake, airport, or defence land
How Do You Verify the Title of a Property in Bangalore?
Title verification is the heart of due diligence. You need to trace the ownership chain from the original owner to the seller. In many Bangalore properties, the chain starts with a grant from the government or a revenue sale. I check each deed for proper execution, registration, and stamp duty payment. A gap in the chain—say a missing sale deed for 5 years—can mean the seller doesn't have full rights.
I also check the EC for any encumbrances. An EC shows all registered transactions: sales, mortgages, leases, wills, and court orders. If a mortgage appears and isn't marked as 'released' or 'satisfied', the bank still has a claim on the property even if the seller tells you the loan is closed. You must get a release deed from the bank before you buy.
How Long Does an EC Search Take in Karnataka?
You can get an EC online from the Kaveri portal for the last 13 years in about 15 minutes if you have the property details. But for a thorough check, I recommend a 30-year EC or at least 13 years plus the period before that from the sub-registrar office. That takes 1 to 3 days depending on the office. At Legal Brigade, we usually do this within 48 hours because we have direct access to the Kaveri database and know which sub-registrar offices are faster.
What Is the Difference Between A Khata and B Khata?
Khata is the account you hold with the BBMP (Bruhat Bengaluru Mahanagara Palike) for property tax. An A khata means the property has proper approvals: the layout is sanctioned, the building plan is approved, and the tax is regular. A B khata is issued for properties that don't have full approvals—like illegal layouts or buildings without a completion certificate. Banks and most buyers only accept A khata. A B khata property may be cheaper, but you'll struggle to get a home loan and may face demolition risk.
| Factor | A Khata | B Khata |
|---|---|---|
| Approval status | Full BBMP approval | Partial or no approval |
| Bank loan eligibility | Yes, most banks | Very limited, only few NBFCs |
| Resale value | High, easy to sell | Low, difficult to sell |
| Legal risk | Low | High (demolition, fines, litigation) |
| Property tax | Standard BBMP rate | Often higher penalty rate |
Takeaway: Always insist on an A khata. If the seller offers a B khata property at a discount, factor in the risk of never getting a loan or being forced to demolish.
What Documents Do You Need for Registration in Bangalore?
When you're ready to register the sale deed at the sub-registrar, you need a set of originals and copies. I always tell my clients to prepare these before the registration date:
- Original sale deed (or draft) with proper stamp paper purchased in the buyer's name
- Mother deed and previous chain deeds (copies)
- Encumbrance certificate (original, not more than 3 months old)
- Khata certificate and extract (original)
- Property tax paid receipts (last 5 years)
- RERA registration certificate and quarterly return (for apartments)
- Occupancy certificate (original)
- Identity proof of buyer and seller (Aadhaar, PAN, voter ID)
- Passport-size photographs of both parties
- Two witnesses with identity proof
- Bank NOC if the property was mortgaged
Karnataka charges 5% stamp duty plus 1% registration fee on properties above Rs 45 lakh (Karnataka Stamp Act schedule, 2025). For properties below that, the rates are lower. You need to pay this before registration, usually via challan or online payment.
How Much Does Property Due Diligence Cost in Bangalore?
The cost of property due diligence varies widely. If you do it yourself, you pay only the EC fee (Rs 15 per year online, plus a few hundred rupees for a certified copy) and your time. But mistakes are common. I've seen buyers miss a crucial mortgage or a pending court case because they didn't know where to look.
Professional due diligence by a property lawyer typically costs between Rs 5,000 and Rs 15,000 for a standard property, depending on the complexity of the title chain. At Legal Brigade, we charge a flat fee that's transparent—no hidden costs. For a typical apartment or site, our fee is around Rs 7,500 to Rs 10,000, and we deliver a written opinion within 48 to 72 hours. For urgent cases, we can do it in 24 hours. Compare that to the Rs 50 lakh or more you might lose if you skip the check.
What Happens If You Skip Due Diligence?
I've handled cases where buyers lost everything. One family paid Rs 60 lakh for a site in Yelahanka. The seller had a mortgage with a private lender that wasn't released. Two years later, the bank auctioned the property. The buyers had no legal ground to stop it because the mortgage was registered before they bought. Another client bought a flat in a building that was partly on government land. The BBMP issued a demolition notice. The buyer's entire investment vanished.
Common risks of skipping due diligence include:
- Inheriting an unreleased mortgage or loan
- Buying a property with disputed ownership (family partition, will, court case)
- Paying for a property that doesn't have RERA registration (illegal to advertise or sell under RERA)
- Getting stuck with a B khata or unapproved layout that can't be sold or mortgaged
- Facing tax arrears or pending government dues
A proper due diligence check costs a fraction of your property value. It's like insurance—you hope you never need it, but you'll be glad you have it when trouble comes.
Can You Do Property Due Diligence Yourself or Should You Hire a Lawyer?
You can do some checks yourself: get an EC from Kaveri online, check the khata on the BBMP site, look up RERA registration. But the tricky part is reading the documents correctly. I've seen buyers who thought an EC was clean because it showed no loans, but they missed that the seller had signed a sale agreement that created a lien. Or they didn't notice that the mother deed referred to a different survey number.
| Factor | Self-Verification | Lawyer-Led Diligence |
|---|---|---|
| Cost | Rs 500 - Rs 2,000 (for EC, khata, etc.) | Rs 5,000 - Rs 15,000 (flat fee) |
| Time | 1-2 days (if you know the portals) | 2-3 days (or 24 hours urgent) |
| Risk of missing a defect | High (especially in title chain) | Low (trained eye on all documents) |
| Liability for errors | None—you bear the loss | Legal opinion from a professional |
| Court case experience | None—may not spot pending litigation | Direct access to court records |
Takeaway: If you're buying a property worth more than Rs 20 lakh (which is most Bangalore properties), a professional check is worth the fee. I've seen too many DIY buyers regret it later.
How Long Does a Full Property Due Diligence Take?
A thorough due diligence usually takes 2 to 7 days, depending on how many documents need to be collected and how old the title chain is. For a straightforward apartment with clear RERA and OC, I can give an opinion in 2 days. For an old independent property with a complex chain of 10+ sale deeds and court orders, it may take a week. At Legal Brigade, we aim to deliver within 3 days for most cases. If you have a token advance expiring, we can do an urgent check in 24 hours—but you need to give us all the documents upfront.
Frequently Asked Questions
How much does property title verification cost in Bangalore?
Professional title verification by a property lawyer in Bangalore costs between Rs 5,000 and Rs 15,000 for a standard property. At Legal Brigade, our flat fee is Rs 7,500 to Rs 10,000, and we provide a written opinion. If you do it yourself, you'll spend about Rs 500 to Rs 2,000 on EC and khata fees, but you risk missing critical defects.
How long does a property due-diligence check take?
A full due-diligence check takes 2 to 7 days. For most properties, we complete the check in 2 to 3 days. Urgent checks can be done in 24 hours if you provide all documents early.
Can I do property verification myself or do I need a lawyer?
You can do basic checks like EC and khata online, but a lawyer's trained eye catches hidden issues: unreleased mortgages, title gaps, pending litigation, or forged documents. For any property worth over Rs 20 lakh, hiring a lawyer is wise. The cost is small compared to the risk.
What is the difference between a sale deed and a mother deed?
A sale deed is the document that transfers ownership from seller to buyer in the current transaction. The mother deed is the earliest deed in the title chain—usually the first transfer from the original owner (like a government grant) to the first private owner. Both are needed for title verification.
What is an encumbrance certificate and why is it important?
An encumbrance certificate (EC) is a record of all registered transactions related to a property for a specific period. It shows loans, mortgages, sales, gifts, wills, and court orders. It's important because it reveals if the property has any outstanding debts or legal claims that could affect your ownership.
What is RERA and how does it protect buyers?
RERA (Real Estate Regulatory Authority) is a central act passed in 2016 that regulates real estate projects. Builders must register their projects, disclose plans, and deliver within promised timelines. Buyers can complain to RERA if the builder delays or cheats. Always check RERA registration before buying an apartment.
What happens if I buy a property with an unreleased mortgage?
If you buy a property with an unreleased mortgage, the bank still has a legal claim on the property. They can enforce the mortgage and auction the property to recover the loan. You'll lose your investment unless you can pay off the loan yourself. That's why you must check the EC for any 'living' mortgages and get a release deed.
If you've got 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. Visit our property document verification in Bangalore page to start, or check out more property buying guides. You can also book a free property consultation to discuss your specific case.
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.