For a rental, an owner sometimes gets one to show the society has no objection to letting the flat out, and some societies separately ask the tenant to sign an undertaking agreeing to follow its rules. There is no fixed government form or fee, each society sets its own process. Ask your landlord early whether their society needs one, since issuing it can take a few days.
Sources
Where it comes from. Level 1 is a government or court page, level 2 established press, level 3 a portal's explainer, which gives only what is commonly quoted.
- NoBrokerHood, https://www.nobrokerhood.com/blog/how-to-get-noc-certificate-from-society/, level 3