No sanctioned plan, no legal building — it is that simple. Building without BBMP approval in Bengaluru risks demolition notices, denial of occupancy certificate, no BESCOM/BWSSB connections in your name, and serious trouble at resale. The good news: with complete documents and a correctly drawn plan, sanction is a predictable process. We have filed hundreds of applications since 1993 through our Sanction Plans & TDR service; this is the full picture as of 2026.
What is BBMP plan approval and who needs it?
BBMP (Bruhat Bengaluru Mahanagara Palike) plan sanction is the legal permission to construct, reconstruct, or substantially alter a building within BBMP limits. You need it for any new house, any additional floor, and any structural modification. Sites under BDA layouts, BMRDA areas, or village panchayats follow parallel processes with different authorities — if you're unsure which applies to your site, that's the first thing to establish.
Applications flow through BBMP's online OBPAS/EoDB portal (Online Building Plan Approval System), where drawings are checked digitally against the bye-laws before human scrutiny.
What documents do you need?
Have these ready before drawing submission — incomplete files are the single biggest cause of delay:
- Title deed / sale deed establishing ownership
- Khata certificate and khata extract — A-khata properties sail through; B-khata sites face restrictions and case-by-case treatment
- Latest property tax paid receipt
- Encumbrance certificate (EC)
- Survey sketch / site plan matching actual measurements
- Architectural drawings prepared and digitally signed by a registered architect/engineer, drawn to current bye-laws
- Structural stability certificate where applicable (taller buildings)
- NOCs as applicable — fire (taller buildings), BWSSB, BESCOM, airport height clearance in flight-path zones, BMRCL near metro alignments
What does BBMP plan approval cost in 2026?
Government-side costs typically land between ₹30 and ₹80 per sq ft of built-up area all-in, made up of: plan sanction fee (linked to area and building type), ground rent, scrutiny fee, labour cess (1% of estimated construction cost), and compound/betterment charges where applicable. A 2,400 sq ft duplex therefore budgets roughly ₹70,000 – ₹1.9 lakh in official fees, varying by zone and category.
Add professional fees for drawing preparation and liaison — and be wary of anyone quoting suspiciously low "all-inclusive" figures with no receipts; unofficial shortcuts create documents that fail scrutiny at resale or loan time.
How long does approval take?
Under the Sakala service guarantee, BBMP's committed disposal time for residential plan sanction is 30 working days from a complete application. In practice, end-to-end timelines run 6–10 weeks including document assembly, digital pre-check corrections, and clarification cycles. Applications with khata discrepancies or NOC dependencies run longer. Nothing accelerates approval like a complete, correctly drawn first submission.
The process, step by step
- Pre-check your paperwork. Khata status, tax receipts, EC, and actual plot measurements versus documents. Fix mismatches before drawing.
- Design to the bye-laws. FAR (floor area ratio) limits, setbacks on all sides, height caps, and coverage for your road width and zone — designed in from day one, not adjusted after rejection.
- Submit on the OBPAS portal. Digitally signed drawings + documents; the system runs automated bye-law scrutiny first.
- Respond to scrutiny remarks. Officials may seek clarifications or corrections; fast, complete responses keep your file moving.
- Pay sanction fees against the demand note.
- Receive the sanctioned plan. Construction must match it — deviations beyond tolerance invite notices and complicate your occupancy certificate. Keep the sanctioned copy on site.
Khata, FAR, setbacks: the three terms that decide your approval
- Khata is BBMP's property account for tax purposes. A-khata = fully compliant records, clean eligibility. B-khata = properties with compliance gaps; sanction is restricted and conversion to A-khata (where eligible) is usually worth doing first.
- FAR caps total built-up area as a multiple of plot area, varying with road width and zone — it decides whether your site can carry G+2 or G+3. TDR (Transferable Development Rights) can legally add FAR in eligible cases; we handle TDR procurement in-house.
- Setbacks are mandatory open strips on all sides, scaling with plot size and height. Setback violations are the most common scrutiny objection in small-plot Bengaluru — and the most avoidable.
Why do applications get rejected?
The recurring culprits: khata/document mismatches (name spellings, extents), drawings violating FAR or setbacks, missing NOCs, plot dimensions on paper differing from ground reality, and unregistered preparers signing drawings. Every one of these is preventable at the design stage — which is why sanction success is really a design-discipline question, not a liaison question.
Frequently asked questions
Can I start construction while BBMP approval is pending? No. Construction before sanction is unauthorized regardless of how likely approval seems, and it exposes you to stop-work notices, penalties, and demolition risk. The weeks saved are never worth the legal exposure — sequence your contractor mobilization after sanction, and use the waiting period for working drawings and contractor finalization.
What happens if I build with deviations from the sanctioned plan? Minor deviations within permitted tolerance are regularizable at OC stage; anything beyond invites notices, penalties, and refusal of occupancy certificate — which blocks BESCOM/BWSSB connections in your name and complicates loans and resale. Build what was sanctioned; where changes become necessary mid-build, consult your architect about a revised sanction before executing them.
Is B-khata property eligible for plan sanction? B-khata sites face restricted, case-by-case treatment, and many cannot get full sanction until records are regularized. If your site is B-khata, get a professional assessment of conversion eligibility before designing anything — it changes budget, timeline, and sometimes feasibility itself.
Do I need BBMP approval for renovation or an extra floor? Structural changes and added floors, yes — an additional floor also has to clear FAR and structural checks on the existing building. Pure cosmetic renovation (flooring, painting, bathrooms without layout change) does not need sanction. Our renovation service starts every project with exactly this assessment.
Want your sanction handled end to end? Drawings, documentation, portal filing, and follow-through — one team, since 1993. Talk to us about your site.
By B K Muralidhar, Principal Architect. Official references: BBMP (bbmp.gov.in), OBPAS portal, Sakala Services (sakala.kar.nic.in).