Occupancy Certificate (OC) vs Completion Certificate (CC)
Short answer
A Completion Certificate (CC) confirms a building was built to its sanctioned plan. An Occupancy Certificate (OC), called the Occupation Certificate in Haryana, certifies it is safe and legal to live in. For a Gurgaon buyer the OC is what matters, so never take possession or register without it.
The two certificates answer different questions. A Completion Certificate (CC) says the finished structure matches the sanctioned building plan, so its footprint, number of floors, height, setbacks and parking are as approved. An Occupancy Certificate, which Haryana usually calls the Occupation Certificate, goes a step further and certifies that the building is safe and legally fit for people to move in, with working water supply, drainage, sewerage, electrical safety and fire clearance. The CC comes first and the OC follows, because a project is only cleared for occupation once it is confirmed to be both built correctly and liveable.
In Gurgaon the authority depends on where the property sits. Licensed private colonies such as the DLF phases, Sushant Lok, South City and Malibu Town fall under the Department of Town and Country Planning (DTCP), older sector land under Haryana Shehari Vikas Pradhikaran (HSVP, formerly HUDA), and areas inside municipal limits under the Municipal Corporation of Gurugram (MCG). All of them work under the Haryana Building Code 2017. Since November 2022, DTCP also allows a self-occupation certificate for eligible homes on individual plots in licensed colonies, where a registered architect certifies the building and the department audits only a sample later.
For a buyer the OC is the document that controls possession. Under HRERA a developer cannot hand over a flat without it, and the OC is what lets you get sanctioned water and power connections, a clean property registry entry and smooth resale later. A home loan is usually released in full only against it too. If possession is delayed, HRERA can award interest on the money you have already paid, calculated at State Bank of India's highest marginal cost of lending rate plus 2 percent, which has recently worked out to roughly 10 to 11 percent a year.
Do not treat an OC as a formality in 2026. DTCP is auditing around 1,500 occupation certificates issued in Gurugram between mid-2025 and early 2026 after inspections found buildings still under construction despite holding an OC. Before you pay or register, ask for the actual OC (not just a CC or a builder promise), confirm it covers your specific tower or unit in a phased project, since large high-rise launches on Dwarka Expressway and in New Gurgaon are often cleared tower by tower with a part occupation certificate, and match the DTCP licence number on it against the project's HRERA registration.
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