How to do Flat Mutation in Bengaluru: Meaning & Process

What is flat mutation, how it differs from land mutation, documents required, step-by-step BBMP process, charges, and everything flat owners need to know. 

Quick Summary (TL; DR)

• Flat mutation in Bengaluru = BBMP Khata transfer in the flat buyer's name after registration

• Unlike land mutation (which involves Bhoomi/RTC revenue records), flat mutation only involves BBMP/GBA records through the E-Aasthi portal at eaasthi.karnataka.gov.in

• Although mutation is not the document that transfers ownership (the registered sale deed does), completing mutation is strongly recommended because it updates municipal records, facilitates property tax payments, utility transfers, home loans, and future resale; without it, home loans, building plan approvals, and BESCOM/BWSSB transfers face blocks.

• Charges: 2% of stamp duty paid + betterment charges (₹200–₹250 per sq m) + ₹170 e-Khata processing fee

• The BBMP Aadhaar-linked automatic e-Khata mutation system has reduced turnaround from 90 to 120 days to 30 to 45 days for a clean application.

Introduction:

Flat mutation is the process of updating the BBMP/GBA's official property records to reflect the change from the previous owner's name to the current flat owner's name after a registered sale deed. In Bengaluru, this is done through the BBMP e-Aasthi portal, resulting in the issuance of a new digital Khata certificate (e-Khata) in the buyer's name.

It does not transfer ownership; the registered sale deed does that. Flat mutation ensures the municipal authority recognises the new owner for property tax, utility services, and all civic purposes.

You registered your flat in Whitefield or Koramangala six months ago. The sale deed is in your name. You are paying the EMI. But BBMP still shows the builder's or previous owner's name on the Khata.

Your bank is asking for a Khata in your name for the home loan top-up. Your housing society wants a BBMP-recognised owner's document. And you cannot transfer BESCOM to your name without the Khata.

Flat mutation, specifically called the BBMP Khata transfer in Bengaluru, is the step that fixes all of this.

What Is Flat Mutation?  Full Meaning

The Administrative Process Every Flat Buyer Must Complete

Mutation (also called Khata transfer for BBMP properties or Name Change/Podarpu for revenue records) is the process of updating the official records to reflect the new owner after a property sale, inheritance, gift, or court order.

For flat owners specifically, mutation means:

• BBMP/GBA's property database is updated from the seller's name to the buyer's name

• A new digital e-Khata is issued in the buyer's name

• Property tax assessment is updated to the buyer's account (new SAS ID or linked to existing)

• The change is reflected in BBMP's E-Aasthi portal

What flat mutation does:

What flat mutation does NOT do:

It does not create or transfer legal ownership. Your legal ownership is established by the registered sale deed. Mutation is the administrative follow-up that ensures civic authorities recognise your ownership.

How Is Flat Mutation Different from Land / Plot Mutation?

The Key Distinctions

This distinction matters because the process, portal, and documents are different.

The flat-specific nuance  UDS:

When you buy a flat, you also purchase an Undivided Share (UDS) of the underlying land. The sale deed covers both the flat and the UDS. The BBMP Khata covers both; there is no separate land mutation required for the UDS portion of a flat purchase. The builder/developer handles the land mutation at the society conveyance level.

When Is Flat Mutation Required?

Every Situation That Triggers the Process

The builder's name problem:

Many flat owners in older Bengaluru complexes (2010–2020 era) discover their BBMP Khata still shows the developer's name. This happens when the buyer did not apply for mutation after registration, or when the developer applied for the project's Khata but did not execute individual flat mutations.

The fix: Apply for Khata transfer at eaasthi.karnataka.gov.in using your registered sale deed as the primary document. This is treated as a first-time mutation for the flat.

What Happens at Flat Registration  and Why Mutation Is Still Needed

The Two-Step Process Most Buyers Do Not Know About

Step 1  Registration at SRO (legal transfer): You pay the stamp duty and registration fee at the SRO. The sale deed is registered. The EC is updated. You are the legal owner.

Step 2  Mutation at BBMP (administrative transfer): You apply at eaasthi.karnataka.gov.in. BBMP updates the Khata. You become the recognised owner in civic records.

These are two completely separate processes by law and in practice.

Registration alone does not update BBMP records. BBMP records do not automatically sync from the SRO's registration database in real time.

An Aadhaar-based automatic e-Khata mutation system has been introduced, aimed at cutting red tape and speeding up property record updates by encouraging property owners to transact online, so their applications can be tracked, and officers can be held accountable. This system is designed to eventually automate mutation post-registration, but currently still requires the buyer to initiate the application.

Documents Required for Flat Mutation in Bengaluru

The Complete Checklist  Flat Specific

For a new flat purchase (first-time mutation in a new project):

For resale flat purchase:

All the above documents, plus:

For inheritance mutation of flat:

Flat Mutation Application Format: What the Form Looks Like

The E-Aasthi Application for BBMP Flat Khata Transfer

The BBMP does not use a paper "mutation application form" for flats anymore; the application is entirely digital through the E-Aasthi portal. However, understanding what the form captures helps you prepare.

Online application collects:

Section 1  Property Identification

• SAS ID / PID (from previous Khata or tax receipt)

• GBA Corporation (Central / East / West / South / North)

• Ward Number and Ward Name

• Property Address (door number, building name, street, locality)

• Flat number, floor, wing/block

Section 2: Previous Owner Details

• Previous owner's full name

• Aadhaar number

• PAN number

• Contact number

• Whether the transfer is bysale/giftt /inheritance,/courtt order

Section 3  New Owner Details

• New owner's full name

• Aadhaar number

• PAN number

• Date of birth

• Contact details and email

Section 4  Transfer Details

• Date of registered sale deed

• Document number and SRO

• Consideration amount

• Type of flat: residential/commercial

Section 5  Document Upload

• Sale deed (PDF)

• Previous Khata (PDF)

• EC (PDF)

• Tax receipts (PDF)

• Aadhaar copies (PDF)

• Supporting documents

Section 6  Fee Payment

• Khata transfer fee: 2% of stamp duty

• Betterment charges

• Processing fee: ₹170

The portal generates an acknowledgement with a Sakala application number after submission.

Your flat is registered. Now mutate it. Vault Proptech makes sure it gets done. Talk to Vault Proptech about your flat mutation.

How to Get Flat Mutation Done Online: E-Aasthi Step-by-Step

The Complete Digital Process (June 2026)

Step 1: Collect all documents first

Before starting the online application, ensure every document listed above is scanned as a clear PDF. Each file must be under 2 MB. Blurry or cropped documents cause rejection.

Step 2: Open E-Aasthi portal

Go to eaasthi.karnataka.gov.in. Log in with your registered mobile OTP.

Step 3: Select GBA Corporation

Select the GBA Corporation (Central, East, West, South, or North) where your flat is located. This is critical; selecting the wrong corporation means your flat is not found in the database.

Step 4: Navigate to Khata Transfer

Click: Khata Services → Apply for Khata Transfer → New Application.

Step 5: Search and identify your flat

Search your flat by:

• SAS ID (from any previous tax receipt or from bbmptax.karnataka.gov.in)

• PID/EPID number

• Property address

The system retrieves the current Khata record for your flat.

Step 6: Fill in transfer details

Enter the transfer type (by sale), date of the sale deed, document number, SRO, and consideration amount.

Step 7: Enter new owner details

Enter your full name, Aadhaar, PAN, date of birth, and contact details. If the flat has joint buyers, enter all co-owners' details.

Step 8: Upload all documents

Upload each document in the prescribed format. Verify each upload was successful (green tick should appear).

Step 9: Pay the fee

Pay the Khata transfer fee online:

• 2% of stamp duty paid on the sale deed

• Betterment charges as calculated by the system

• ₹170 processing fee

Total for a ₹80 lakh flat: approximately ₹30,000–₹35,000.

Step 10: Note the Sakala application number

The portal generates a Sakala application reference number. Track the application status at sakala.karnataka.gov.in.

Step 11: Revenue Inspector inspection (if required)

For some applications, the Revenue Inspector may visit the flat to verify documents and possession. Be available or notify a representative.

Step 12: Download Final e-Khata

After approval (30–45 working days for clean applications), log in to eaasthi.karnataka.gov.in and download your Final e-Khata certificate in your name.

How to Get Flat Mutation Done Offline

When Online Is Not Working,g or the Application Is Stuck

Step 1: Visit the GBA ward office for the ward where your flat is located. Ask for the Revenue Section.

Step 2: Carry two sets of photocopies of all required documents plus originals for verification.

Step 3: Submit the Khata transfer application (BBMP-prescribed form available at the ward office) along with all documents.

Step 4: Pay the applicable fee at the ward office cashier. Collect the receipt.

Step 5: The Revenue Inspector processes your application. Follow up every 7 to 10 days.

Step 6: Collect the e-Khata print from the ward office or download from eaasthi.karnataka.gov.in after approval.

When offline is necessary:

• Flat in a partitioned plot with no prior BBMP Khata record

• E-Aasthi portal showing SAS ID not found

• Documents do not upload correctly (large file size, format issues)

• Application rejected online, but the reason is unclear

Flat Mutation Charges in Bengaluru: June 2026

Exact Costs for Every Flat Category

BBMP Flat Mutation (Khata Transfer) Charges:

Worked examples:

Betterment charges calculated for 100 sq m built-up area at ₹220/sq m (zone-dependent, verify at your ward office).

Your flat is registered. Now mutate it. Vault Proptech makes sure it gets done. Talk to Vault Proptech about your flat mutation.

Resale Flat Mutation: What Is Different

Additional Steps When Buying a Resale Apartment

The chain of Khatas:

For a resale flat, the BBMP Khata must have been previously transferred at least once from the builder to the original buyer. If the original buyer never mutated, the Khata still shows the builder's name. You now need to trace and complete this gap.

What to check before buying a resale flat:

If Khata is in the builder's name (not the seller's):

This creates a two-step mutation:

1. First, file mutation for the original buyer (based on their registered sale deed)

2. Then, file mutation for you (based on your registered sale deed)

Both applications can be filed as a linked chain at E-Aasthi. Your property lawyer can structure this correctly.

Inheritance Flat Mutation  Flat-Specific Process

When the Flat Owner Has Passed Away

Flat inheritance mutation is distinct from standard purchase mutation because:

• There is no fresh sale deed; the basis is the legal heir certificate

• If there are multiple heirs and not all want the flat, a Release Deed from the other heirs is needed

• The deceased's name must remain in the existing records as the starting point

Step-by-step for inherited flat:

1. Obtain a death certificate (government-issued)

2. Apply for a Legal Heir Certificate at the Tahsildar's office

3. If multiple heirs  decide who takes the flat, get the other heirs to execute a Release Deed (registered at SRO)

4. Apply for Khata transfer at eaasthi.karnataka.gov.in with: death certificate, legal heir certificate, previous Khata, and release deed (if applicable)

5. Pay the applicable Khata transfer fee

6. Receive e-Khata in the inheriting heir's name

Flat Mutation in Bengaluru  Vault Proptech Handles It All

Every flat sale in Bengaluru requires a mutation within weeks of registration. Getting it done correctly, collecting all documents, choosing the right portal path, paying the right fees, and following up on stuck applications requires consistent attention.

Vault Proptech manages the complete flat mutation process for flat buyers in Bengaluru from the day of registration to the Final e-Khata in your name.

• New flat Khata transfer  online application to Final e-Khata

• Resale flat mutation, including chain Khata gap resolution, where the builder's name persists

• Builder's Khata  coordinating the developer to release their Khata for the first-time buyer transfer

• Inheritance flat mutation  legal heir certificate, death certificate, release deed coordination

• Betterment charge calculation, accurate fee assessment before application

• Sakala tracking and GBA helpdesk escalation when applications stall

• Rejection correction, identifying the exact error and resubmitting correctly

• Joint flat mutation, both co-owners' names are correctly captured

• NRI flat mutation  complete remote management via registered POA

• Society NOC coordination for resale flat mutation

Your flat is registered. Now mutate it. Vault Proptech makes sure it gets done. Talk to Vault Proptech about your flat mutation.