 It complements a building permit—a document that must be filed by the applicant with the local authority before construction to indicate that the proposed construction will adhere to ordinances, codes, and laws.A "temporary" certificate of occupancy grants residents and building owners all of the same rights as a certificate of occupancy, however it is only for a temporary period of time.In New York City, TCOs are usually active for 90 days from the date of issue, after which they expire.