Published:
Last updated:
Certificate of occupancy: what it triggers in your commercial lease
A certificate of occupancy does more than clear a building for use. It starts rent, releases TIA draws, and sets your opening date. Here is how.
A certificate of occupancy confirms a structure complies with code and may legally be occupied for a stated use. For an occupier, it also behaves like a financial instrument: it starts rent, releases tenant improvement funds, and sets the opening date. That dual role is why it gets mishandled, since the construction team treats it as the last box in closeout while the lease treats it as a trigger.
What does a certificate of occupancy trigger in a commercial lease?
| CO event | What it moves in the lease | What to verify |
|---|---|---|
| TCO issued | Often satisfies delivery and permits opening; may start rent if the clause does not distinguish temporary from final | Whether the rent commencement clause accepts a TCO |
| Final CO issued | Rent commencement where required; often a condition precedent to the last TIA draw | The exact document the landlord must deliver, and to whom |
| Amended CO required | Delivery may be incomplete if the existing certificate does not permit your use | The occupancy classification on the existing CO against your intended use, before signature |
| CO withheld or revoked | Opening covenant cannot be met; co-tenancy clauses may be affected | Which party bears the delay, and whether abatement or termination rights apply |
The pattern to notice: the CO does not appear in the lease as a subject in its own right. It appears inside other clauses, as a condition on something else, which is exactly why it goes missing from lease abstracts built around the obvious fields.
Temporary, final, and amended: three documents, three exposures
A TCO expires, and it is issued to a project that is about to demobilize; the construction manager who tracked it moves on, and the location is now occupied under a document that lapsed, not because anything changed on site but because a date passed. A final certificate closes that out, usually weeks or months after opening. An amended certificate is required when the use, egress, or type of occupancy changes, which is the second-generation space problem: a former retail bay taken for a restaurant is a change in classification, and the amendment carries its own permitting timeline.
Four ways the CO date goes wrong on a multi-site program
- 01The clause is ambiguous and nobody resolved it before opening on a TCO
- 02The TCO expiry has no owner once the project closed
- 03The final CO never reached the lease file, and the TIA draw lapses past deadline
- 04The existing CO did not permit the use, discovered after signature
None of these are inspection failures. All four are handoff failures between the construction record and the lease record. See our lease abstraction and critical date tracking.
Frequently asked questions
Who is responsible for obtaining the certificate of occupancy?
- It depends on scope and lease. Where the landlord performs base building work, the landlord typically obtains the CO for the shell; where the tenant performs the buildout, the tenant or its contractor usually obtains the CO or amended CO for the premises.
Can rent commencement occur before the certificate of occupancy is issued?
- Yes, if the lease says so. Rent commencement is a contractual date, not a regulatory one, so read the definition in the lease rather than assuming the CO governs it.
What happens if you occupy space without a valid certificate of occupancy?
- The occupancy is not legal. Consequences vary by jurisdiction and can include stop-work or vacate orders, fines, and insurance complications, and can put an opening or continuous operation covenant in an uncomfortable position.
How long does it take to get a certificate of occupancy?
- It varies substantially by jurisdiction and by the number of trade inspections required. The driver is rarely the certificate itself; it is inspection scheduling and re-inspections after corrections.
See REAL run end to end.
Watch a demoRelated posts
Best lease management software for enterprise tenants
Six platforms compared on the criteria a large occupier actually weighs: abstraction at scale, critical dates, CAM recovery, ASC 842, ERP fit, and deployment.
Reading every lease before the renewal clock runs out
A practical approach to tracking critical dates and obligations across hundreds of leases without a bigger team.
Recovering tenant improvement allowances you already earned
TIA dollars expire quietly. Here is how to find and collect them before the window closes.