Owning a house in Bangalore is one thing. Making changes to it legally is another story altogether.

Many homeowners assume plan approval is required only for new construction. That is wrong. If you are planning renovation, extension, additional floors, major structural changes, or regularising an old building, you may need plan approval for an existing house.

This blog explains the step-by-step procedure to get plan approval for an existing house in Bangalore, including documents, approvals, timelines, and common mistakes to avoid.

What Is the Procedure to Get Plan Approval for an Existing House in Bangalore?

Plan approval is an official permission issued by the local authority confirming that your house layout complies with building bylaws, zoning regulations, setbacks, FAR, and safety norms.

For existing houses, plan approval is typically required when:

  • You add rooms, floors, or balconies
  • You modify structural walls or columns
  • You regularise deviations in old constructions
  • You apply for loans, sale, or occupancy certificates
  • You undertake major renovation or redevelopment

In Bangalore, plan approvals are governed by Bruhat Bengaluru Mahanagara Palike (BBMP) for most urban properties.

When Do You Need Plan Approval for an Existing House?

You need plan approval if you are doing any of the following:

  • Structural renovation or reconstruction
  • Adding an extra floor or terrace room
  • Changing the building footprint
  • Legalising unauthorised deviations
  • Applying for Khata transfer, loan, or sale clearance
  • Redeveloping an old independent house

Minor interior changes like painting, false ceilings, or modular kitchens do not require plan approval.

Step-by-Step Procedure to Get Plan Approval for an Existing House in Bangalore

Step 1: Engage a Licensed Architect or Engineer

The first step is hiring a BBMP-registered architect or structural engineer.

They will:

  • Visit the site
  • Measure the existing structure
  • Check zoning and bylaws
  • Prepare revised drawings

Without a licensed professional, your application will be rejected immediately.

Step 2: Site Survey and Measurement

A detailed site survey is conducted to:

  • Record current built-up area
  • Identify deviations from the approved plan (if any)
  • Check setbacks, height, and coverage

This survey forms the foundation of your approval process.

Step 3: Preparation of Drawings and Plans

Your architect prepares:

  • Existing plan
  • Proposed plan (if changes are planned)
  • Elevation and section drawings
  • Area statement and FAR calculation

These drawings must comply with BBMP building bylaws and zoning regulations.

Step 4: Document Collection

You will need the following documents:

  • Sale deed / title deed
  • Latest Khata certificate and extract
  • Encumbrance certificate (EC)
  • Tax paid receipts
  • Previous approved plan (if available)
  • Aadhaar / PAN of owner
  • Site photographs

Missing or incorrect documents are the most common reason for delays.

Step 5: Online Application Through BBMP Portal

BBMP plan approvals are submitted online via the BBMP building plan approval system.

Your architect uploads:

  • Drawings
  • Ownership documents
  • Area statements
  • Affidavits and undertakings

Application fees are calculated based on plot size and built-up area.

Step 6: Scrutiny and Technical Review

BBMP officials review the application for:

  • Zoning compliance
  • FAR limits
  • Setback requirements
  • Road width norms
  • Height restrictions

If deviations are found, the application is sent back for correction.

Step 7: Payment of Betterment Charges (If Applicable)

For existing houses with deviations or regularisation:

  • Betterment charges
  • Deviation penalties
  • Infrastructure fees

may apply depending on the nature of the construction.

Step 8: Approval and Issuance of Sanctioned Plan

Once approved, BBMP issues:

  • Digitally signed sanctioned plan
  • Approval letter with conditions

This document is legally valid and required for:

  • Renovation work
  • Bank loans
  • Property sale
  • Utility connections

Timeline for Plan Approval in Bangalore

Typical timelines:

  • Simple cases: 15–30 working days
  • Deviations or corrections: 30–60 days
  • Regularisation cases: Longer, depending on complexity

Delays usually occur due to incomplete documents or non-compliant designs.

Common Mistakes Homeowners Make

  • Starting construction before approval
  • Hiring unlicensed draftsmen
  • Ignoring setback and FAR rules
  • Assuming old buildings don’t need approval
  • Relying on verbal assurances

These mistakes can result in:

  • Stop-work notices
  • Heavy penalties
  • Demolition orders

Why Professional Guidance Matters

Plan approval is not just paperwork. It directly impacts:

  • Structural safety
  • Legal ownership
  • Property value
  • Resale eligibility

At Divy Renovation, we coordinate with licensed architects and ensure your renovation or redevelopment is legally compliant, structurally sound, and approval-ready.

Final Thoughts

Getting plan approval for an existing house in Bangalore may seem complex, but it is completely manageable with the right process and professionals.

If you are planning renovation, extension, or redevelopment, never skip plan approval. It protects your investment and keeps your home future-proof.

Planning to renovate or modify your existing house in Bangalore?
Don’t risk delays or penalties.

📞 Consult Divy Renovation for approval-ready renovation planning
We help you build smart, safe, and legally.