OC vs CC in Real Estate: Completion Certificate vs Occupancy Certificate

The Completion Certificate is issued by the local planning or municipal authority after inspecting the finished building. It certifies that construction was completed in line with the approved building plan: the height, the number of floors, the layout and the setbacks match what was approved. If the building differs from the approved plan, the authority can refuse the CC until the deviation is corrected or regularised as per the rules. The CC is about the building matching the plan.

The Occupancy Certificate is issued after the CC, once the authority is satisfied that the building is fit for people to live in. That check covers the practical conditions of living there: water supply, drainage and sewerage, electricity, lifts, fire safety, and access. The OC is the permission to occupy. Without it, the building may be physically complete but is not formally cleared as a home. The OC is about the building being safe and ready to live in.

1. 1Plan approval. The developer gets the building plan approved by the local authority before construction.
2. 2Construction. The building is built as per the approved plan, with inspections along the way.
3. 3Completion Certificate. On completion, the developer applies for the CC. The authority inspects and certifies that the building matches the approved plan.
4. 4Occupancy Certificate. With the CC in hand, the developer applies for the OC. The authority checks that the building is fit for occupation and issues the OC.
5. 5Possession and registration. Only with the OC in place is the building formally ready for buyers to move in and complete their formalities cleanly.

• What it certifies: CC certifies the building was built as approved. OC certifies the building is fit to live in.
• Who issues it: Both are issued by the local authority, usually the municipal corporation or planning authority for the area.
• Order: CC first, then OC. The OC application needs the CC.
• What it allows: The CC allows the developer to apply for the OC. The OC allows buyers to occupy the building.
• What happens without it: Without a CC, the OC cannot be issued. Without an OC, occupation is not formally cleared, even if the building looks finished.

• Utilities in your name. Water and electricity connections for individual flats are normally regularised once the building has its OC.
• Home loan. Lenders look at OC status for final disbursement on ready homes, and a missing OC can hold up the loan.
• Resale. A future buyer and their lender will ask for the OC. A flat in a building without an OC is harder to sell and harder to finance.
• Safety and legal standing. The OC is the authority's word that the building meets the norms for living. Without it, the buyer's position is weaker if services or safety are disputed.
• GST. A ready home with an OC generally does not attract GST on the sale itself, while an under construction home does. OC status can therefore change the tax on the deal, so confirm it rather than assuming it.

1. 1Ask for copies of both certificates. Not a promise that they are applied for, but the certificates themselves, for the exact building and wing the flat is in.
2. 2Check the RERA listing. For RERA registered projects, check the project status on your state RERA website. Our RERA lookup page lists the official state RERA portals in one place.
3. 3Match the wing and building. Large projects get certificates wing by wing or building by building. An OC for wing A does not cover wing B.
4. 4Get possession terms in writing. If possession is offered before the OC, get the OC timeline, the compensation terms and the utility situation in writing, and take independent advice before accepting.
5. 5Do not rely on a verbal assurance. If the OC is pending, that fact should be in the agreement or in a written update from the developer, not in a sales conversation.

The exact names, issuing authorities and procedures vary by state and city, and some authorities issue partial occupancy certificates for completed wings of a larger project. This guide explains the standard CC then OC sequence used across India. For a specific project, rely on the certificates issued for that building and wing, verified with the local authority, rather than on general descriptions. This is general information, not legal advice.