How to Change Mobile Number in BBMP Property Tax Step-by-Step Guide (2026)

Learn exactly how to change your mobile number in BBMP property tax records step-by-step online process on bbmptax.karnataka.gov.in, offline method and documents needed.

Quick Summary: (TL; DR) 

Changing your mobile number in BBMP property tax records in Bengaluru takes less than 5 minutes online  no office visit needed for most cases. Go to bbmptax.karnataka.gov.in, navigate to "Update Mobile No", enter your 10-digit Application Number and the first 3 characters of your name, retrieve your record, enter the new number, and verify with OTP. Your number is updated immediately. The 10-digit Application Number is printed on every BBMP property tax paid receipt. If you do not have the receipt, it can be found on the SAS portal using your PID or address. The updated mobile number is critical because all OTP verifications, tax reminders, and e-Khata communications from BBMP come to this registered number.

Why Your Mobile Number in BBMP Records Matters More Than Ever

Most Bengaluru property owners registered their mobile numbers during the SAS (Self-Assessment Scheme) property tax enrollment years ago  and have since changed phones, numbers, or service providers. An outdated mobile number in BBMP property tax records causes:

From October 2024, e-Khata is mandatory for all property transactions  and most e-Khata processes require OTP verification to the registered mobile number. If your number is outdated, you cannot complete e-Khata applications or corrections.

What You Need Before You Start

Where to find your 10-digit Application Number:

• Printed on every BBMP property tax paid receipt  look for "Application No." or "SAS Application No."

• Available on the BBMP SAS portal  search by address or owner name

• Visible on your property tax challan or demand notice

• Found on your e-Khata certificate if already issued

How to Change Mobile Number in BBMP Property Tax  Online Method

Method 1:  Through the Dedicated Mobile Update Page

To change your number in BBMP Property Tax online you can follow these steps. First you need to go to the BBMP Property Tax website. You can do this by opening your browser and going to bbmptax.karnataka.gov.in/forms/Mobilenoupdatepublic.aspx. You can go to the BBMP Property Tax homepage at bbmptax.karnataka.gov.in and look for "Update Mobile No" in the top navigation menu or under "Services". Now you will see a form with two fields. You need to enter your 10-digit SAS Application Number in the Application Number field. In the Owner Name field you need to enter the three letters of your name as it is registered in BBMP records.

For example if your name is "Ramesh Kumar" you need to enter "RAM".

Next you need to click "Retrieve".

• The system will then show you your property record.

• You need to check the details that are displayed such, as your name, property address, ward and zone and your current registered mobile number.

• You need to make sure that the details are correct and that it is your property.

• If everything is okay you can click "Confirm" to proceed.

• Then you need to click "Proceed" on the screen.

• Now you can enter your mobile number.

• You need to enter the 10-digit number that you want to register.

• You can also update your email ID at the time.

• After that an OTP will be sent to your mobile number.

• You need to enter the OTP in the verification field.

• Then you can click "Submit".

• The system will then confirm that your mobile number has been updated.

• BBMP Property Tax will now use your mobile number to contact you.

• They will send you OTPs, tax reminders and e-Khata notifications to your number.

• It should only take you around 3 to 5 minutes to do this if you have all the necessary documents ready. You can change your number in BBMP Property Tax online by following these steps. BBMP Property Tax online method is easy to use.

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What If Your 10-Digit Application Number Is Not Known?

If you cannot find the 10-digit application number:

Option A  Search by address on BBMP SAS portal: Go to bbmptax.karnataka.gov.in Click "Retrieve Application Number" - Enter your ward number and property address - The SAS application number appears

Option B  Search using PID (Property Identification Number): Go to bbmpeaasthi.karnataka.gov.in Log in - Search by PID - The linked SAS application number appears in the property record

Option C  Use your old tax receipt: Every single BBMP property tax receipt  digital or printed  carries the SAS Application Number. Check receipts for any year from 2013 onwards.

How to Change Mobile Number in BBMP Property Tax  Offline Method

If the online process fails due to portal errors, OTP not being received, or the property record not being found:

Step 1: Visit the nearest BBMP ARO (Assistant Revenue Officer) office for your ward. The correct ARO office is based on your property's ward  find your ward number at bbmptax.karnataka.gov.in using your property address.

Step 2: Carry these documents:

Step 3: Fill the Contact Details Update Form at the ARO office (available at the counter)

Step 4: Submit the form with supporting documents and your new mobile number

Step 5: The ARO office updates the number in the system  typically done on the same day or within 2 working days

Step 6: You will receive an SMS confirmation on the new number once updated

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Frequently Faced Issues and Solutions

Why You Should Also Pay BBMP Property Tax Online

Now that your mobile number is updated, you are set up to pay BBMP property tax online seamlessly. Here is why online payment is better:

Pay your property tax online at bbmptax.karnataka.gov.in  enter your Application Number, retrieve your property details, calculate tax including the SWM user fee, and pay online. Download the receipt immediately and save it  this receipt is required for Khata transfer, home loans, and property sales.

If you need assistance paying BBMP property tax, updating your property records, applying for e-Khata, or any other property-related service in Bengaluru  our team provides end-to-end property documentation and compliance services.

Conclusion

Updating your mobile number in BBMP property tax records is one of the simplest administrative tasks a Bengaluru property owner can complete  and one of the most ignored until it causes a problem. With e-Khata now mandatory for all property transactions, an outdated mobile number blocks OTP delivery and stalls critical processes like Final e-Khata application, property tax payment, and name correction. The online process at bbmptax.karnataka.gov.in takes less than 5 minutes with your Application Number and new SIM. If the portal does not work, visit your ward's ARO office with your tax receipt, Aadhaar, and sale deed. Do it today  before a missed OTP stops your next property transaction at the worst possible moment. And while you are on the BBMP portal, pay your property tax before May 31 to claim the 5% early payment rebate.

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