Occupancy Certificate and Completion Certificate: Which One Lets You Move In

Two certificates decide whether a finished building is finished in the sense that matters. Buyers hear both names, are usually shown neither, and are told instead that a project is "ready to move". Ready to move is a marketing state. The certificates are a legal one, and the gap between the two is where a large share of possession disputes begin.

The two certificates, defined by what each certifies

The Real Estate (Regulation and Development) Act, 2016 defines both, which is unusually helpful — most property vocabulary has no statutory anchor at all.

Completion certificate. Section 2(q) describes it as the certificate issued by the competent authority certifying that the real estate project has been developed according to the sanctioned plan, layout plan and specifications, as approved by the competent authority under the local laws. The subject of that sentence is the project, and the test is conformity with what was sanctioned.

Occupancy certificate. Section 2(zf) describes it as the occupancy certificate, or such other certificate by whatever name called, issued by the competent authority permitting occupation of any building as provided under local laws, which has provision for civic infrastructure such as water, sanitation and electricity. The subject there is the building, and the test is fitness to be occupied, with the services connected.

So one is about the drawing and the other is about the plumbing. A building can be built exactly as sanctioned and still not be ready to receive people, because the water connection, the sanitation and the power supply are a separate exercise from pouring concrete to a plan.

Section 11(4)(b): whose job it is to get them

This is the provision to know by number. Section 11(4)(b) of the Real Estate (Regulation and Development) Act, 2016 makes the promoter responsible for obtaining the completion certificate or the occupancy certificate, or both as applicable, from the relevant competent authority, and for making it available to the allottees individually or to the association of allottees.

Three things follow from the wording. The duty is the promoter's, not the buyer's. The phrase "or both as applicable" means which certificates apply is decided by the local law that governs the plan, not by the developer's preference. And "making it available" is part of the duty — obtaining a certificate and keeping it in a drawer does not discharge it.

Which authority issues them, and why that follows the plan sanction

The competent authority is whichever body sanctioned the plan. That is the single rule that resolves most confusion on a corridor like Sarjapur Road, where the jurisdiction changes several times along one road.

A building sanctioned by a city corporation is certified by that corporation. A layout or building sanctioned by a planning authority is certified by that planning authority. A structure sanctioned by a panchayat under its own powers is a different tier again, with a different certificate and a narrower scope. If you know who sanctioned the plan, you know who issues the certificate, whose seal should be on it, and whose office you can walk into to check it.

This is also why "the OC is applied for" is a statement with a checkable object. There is a file, in a named office, with a number.

Partial occupancy certificates, and what they leave out

Large developments are rarely completed all at once, and a certificate can be issued in respect of part of a development — named towers, named floors, named blocks. A partial certificate is a real certificate. It is simply narrower than the sales conversation around it usually suggests.

What matters is the scope line. Read which structures the certificate names and which it does not. A tower covered by a partial certificate is cleared for occupation; the clubhouse, the second phase, the landscaped areas and the basement levels that are not named in it are not. Moving into a certified tower on a site where the remaining works are live is a decision about noise, dust, access and safety — a reasonable one to make with open eyes, and a poor one to make because nobody mentioned the certificate covered one building out of three.

What "ready to move" means legally, and what it means in a brochure

In a brochure, "ready to move" typically means the flat is finished enough to photograph. Legally it means nothing at all — no statute defines the phrase, no authority issues it, and no register records it.

The nearest legal equivalent is: a building for which the occupancy certificate has been issued, covering the block the apartment sits in. That is a document with an issuing office and a number. When a listing, a portal or a sales team says ready to move, the only useful reply is a request for the certificate that makes the claim true. If the answer is a date, the answer is not the certificate.

The risks a buyer carries by taking possession without one

• Utility connections. Permanent water, sanitation and electricity connections are ordinarily granted against the occupancy certificate. Occupation before it commonly runs on temporary or construction-stage supply, which is a different tariff, a different reliability profile and a different person's name.
• Municipal records. The property record and tax account for a building are opened on the strength of the sanction and the certificate. Without one, the account that should be in your name may not exist to be opened.
• Resale and lending. A subsequent buyer's lawyer will ask for the certificate, and a lender's legal opinion will note its absence. That is a discount you pay later for a convenience taken now.
• Deviation risk. If a building differs from what was sanctioned, the difference has to be regularised before a certificate issues. Occupants who moved in first are the people living inside an unresolved regularisation.
• Your own remedy. The certificate is documentary proof of the state of the building at handover. Taking possession without it removes the cleanest evidence you would otherwise have had.

Section 17 and the transfer of common areas

The occupancy certificate is also the trigger for the transfer that ends the development. Section 17(1) of the Real Estate (Regulation and Development) Act, 2016 requires the promoter to execute a registered conveyance in favour of the allottee, along with the undivided proportionate title in the common areas to the association of allottees, and to hand over physical possession — and the proviso to that section fixes the timeline by reference to the date of issue of the occupancy certificate where the local law does not prescribe one.

Read that alongside section 19(10), which puts the corresponding duty on the allottee to take physical possession within the period stated in that section, computed from the occupancy certificate. Both clocks start at the same document. Until it exists, neither obligation is running, and the community is stuck in a stage that has no defined end.

How to verify a certificate you have been shown

1. Read the issuing authority and confirm it is the same body that sanctioned the plan you have been shown. A certificate from a different tier than the sanction is a question, not a formality.
2. Read the scope. Which blocks, which floors, which phase. Write the excluded parts down.
3. Match the property description — survey numbers, village, extent — against the sale documents and the project's registration entry. The three should agree.
4. Note the file or reference number, then verify it with the issuing office. This is the step everyone skips and the only one that proves anything.
5. Ask for the sanctioned plan alongside it. Conformity is the whole test of a completion certificate; you cannot assess conformity against a document you have not seen.
6. Keep both in your own file. The next buyer of your home will ask you for them.

The short version

The completion certificate says the project matches its sanction. The occupancy certificate says the building may be lived in and has the services to support it. The promoter has a statutory duty to obtain what applies and to give it to you. Nothing about a finished-looking flat substitutes for either, and no phrase in a brochure has the standing of a certificate with a number on it.

The full purchase sequence, document by document, is the buyer guide; every term used here is defined in the glossary; and each SUYUG registration number, promoter name and validity date is transcribed from the certificate on the RERA page so you can check it against the register yourself.