The certificate is an indication that the building is suitable for occupancy. An OC is required, when applying for water, sanitation and electricity connections. For home owners, an OC is necessary to cement the legal status of the property they own.
You will require an OC, when you apply for a home loan, or if you are purchasing a resale property.
A Completion Certificate (CC) is issued only after the construction meets other building standards like distance from the road, the height of the building, and rainwater harvesting system. A CC alone cannot legalise occupation; the OC is a must.
These days many buyers continue to occupy apartments without an OC, which can jeopardise the legal status of their property and an eviction notice may be served to them. As a buyer, do not ignore the importance of an OC, as it secures the legal status of your property.
Occupancy Certificate gains significance because it is a document which evidences the completeness of all the installations and approvals required for a building to be habitable
Now you can decide about going ahead with the purchase without the OC or not.