A finished-looking building is not the same as a legal one. The Completion Certificate confirms a project was built according to the approved plan, and the Occupancy Certificate confirms it is safe and lawful to move in. Without them, you may be buying a home you cannot fully own, insure or resell cleanly.

If you remember one rule from this guide: do not take possession, and ideally do not register, until the Occupancy Certificate is issued and shown to you.

What the Completion Certificate confirms

The Completion Certificate (CC) is issued by the local municipal authority after inspection, certifying that the building has been constructed in accordance with the sanctioned plan and applicable building regulations. It is essentially the authority's sign-off on how the structure was built.

It matters because it links the finished building back to what was legally approved. Deviations from the sanctioned plan can jeopardise this certificate and, with it, the legality of the construction.

What the Occupancy Certificate confirms

The Occupancy Certificate (OC) is issued once the authority is satisfied the building is complete and fit for habitation, with essential services such as water, sanitation and fire safety in place. It is the legal green light to occupy the premises.

Occupying a flat without an OC can expose residents to penalties and complications, and it signals that the building may not have cleared all statutory requirements.

Why buying without them is risky

  • Difficulty obtaining permanent water, electricity and sanitation connections in your own name.
  • Weaker legal standing if there is a dispute over deviations from the approved plan.
  • Complications and reduced buyer confidence when you try to resell.
  • Potential exposure to penalties or action for occupying an uncertified building.
  • Home-loan and insurance friction, since lenders and insurers often ask for these documents.

How to verify them before you commit

  • Ask the builder for copies of both the CC and OC and note the issuing authority and dates.
  • Cross-check the certificates against the sanctioned building plan for the tower and your unit.
  • Where possible, verify authenticity directly with the local municipal or planning authority.
  • Have your lawyer confirm the certificates cover the specific building and phase you are buying into.
  • For ready-to-move homes, treat a missing OC as a serious red flag, not a formality to be completed later.

A note on under-construction homes

For under-construction purchases, the OC is issued near the end, so you will not have it on day one. What you can and should do is make the builder's obligation to obtain the OC an explicit condition in the agreement, and tie final payment and possession to its issuance.

A credible builder will have a clear track record of obtaining OCs for delivered projects. Ask to see OCs from their completed developments as evidence.

The honest takeaway

The OC and CC are not paperwork to be waved away; they are the difference between owning a legal home and owning a liability. Insist on them, verify them, and let the timeline of the OC govern when you pay and when you move in.

This is general information, not legal advice. Verify certificate authenticity with the relevant authority and consult a lawyer for your specific project and city rules before proceeding.