OC and CC: what they prove and what happens without
A Completion Certificate says the building was built to plan. An Occupancy Certificate says it is lawful to live in. Buying without one moves that risk to you.
A Completion Certificate records that a building was finished according to the sanctioned plan. An Occupancy Certificate is permission to live in it. Buying into a building that never received its OC means taking on a risk the developer did not resolve — and passing it to your own buyer later.
In Bengaluru this is one of the most reliable predictors of a resale that stalls.
What each document is
Completion Certificate (CC). Issued when the authority is satisfied the building has been completed in accordance with the approved plan. It is a statement about construction against sanction.
Occupancy Certificate (OC). Issued by the sanctioning authority — BBMP for most of Bengaluru — when it is satisfied the building complies and the necessary services — water, sanitation, fire safety, electrical — are in place, and permits the building to be occupied.
The OC is the one that matters most to a buyer, because it is the document that makes living in the building lawful.
Why buildings end up without one
Rarely because of a single dramatic failure. Usually because of accumulated deviation.
A project is sanctioned for a certain footprint, height and unit count. During construction things change — an extra floor, a modified setback, a converted common area, parking that does not match plan. Each change on its own looks manageable. Collectively they mean the building as built does not match the building as approved, and the certificate cannot issue without regularisation that may or may not be available.
Meanwhile people have paid and need to move in. Possession is given, life proceeds, and the certificate quietly never arrives.
What it means for you
Enforcement risk. A building occupied without an OC is occupied without permission. Action against long-occupied buildings is not the common case, but the exposure sits with the residents rather than with the developer who caused it.
Financing. Lenders ask. Some decline outright, others lend with conditions. Either way it narrows who can buy.
Resale. Your buyer’s lawyer will ask for the OC. The conversation you are having now with the seller is the conversation you will have later as the seller, except by then you will have lived there for years and have no way to fix it.
Tax and khata. Confirm the BBMP tax account and the khata class on e-Aasthi match a lawfully occupied building.
Services. Utility connections and civic services are, in principle, tied to lawful occupation. In practice arrangements exist, and those arrangements are exactly what becomes fragile under scrutiny.
The questions to ask
Check the project’s filings on the Karnataka RERA register first, then ask for the OC by name and read it against your building. Check that the certificate covers the tower and the floor your flat is on — partial OCs covering some towers and not others are common in phased projects, and a certificate for Tower A is not a certificate for Tower C.
If there is no OC, ask what specifically prevented it, whether an application was made, and what the current position is. “It is being processed” is not an answer; ask what the deviation was. The developer’s obligations on completion and handover sit in the Real Estate (Regulation and Development) Act, 2016.
Then price the answer. A flat in a building without an OC is not the same asset as an identical flat in a building with one, and it should not carry the same price.
This is the kind of question our legal due diligence reviews put to developers directly, because the answer is usually knowable and usually not volunteered.
Frequently asked questions
What is the difference between OC and CC?
A Completion Certificate records that the building was completed in accordance with the sanctioned plan. An Occupancy Certificate is the authority's permission for the building to be occupied, issued after it is satisfied the structure complies and the required services are in place.
Can you buy a flat without an Occupancy Certificate?
Transactions do happen in buildings without an OC, but the buyer takes on the risk. A building occupied without an OC is, in principle, occupied without permission, which exposes residents to enforcement action and makes both financing and resale harder.
Does a khata substitute for an Occupancy Certificate?
No. A khata is a municipal tax record. An OC is a statement about the building's compliance and fitness for occupation. Holding one says nothing about the other, and buyers regularly conflate them.
Who is responsible for obtaining the OC?
The developer. It is obtained on completion of the project, not by individual flat purchasers, which is why the absence of an OC years after possession is a question about the project rather than about your unit.