When do I get a certificate of occupancy?
On this page
- Key facts
- Why does a dental office need a certificate of occupancy?
- What has to happen before the CO is issued?
- What commonly holds up a dental CO?
- Can I open before the final CO?
- How does the CO affect rent and the contractor?
- How long should I budget from permit to CO?
- What should you do in the last 30 days before the CO?
- How FloorStack helps
- Free tools for this step
- Frequently asked questions
- Sources
You get the certificate of occupancy (CO) after every required final inspection passes and fees are paid, at the end of construction. In Sacramento, for example, allow up to 7 business days to process the request once the project is finaled (City of Sacramento). In 2026 cost guides, typical dental TI runs 16–28 weeks from permit to CO (BuildCrux).
Key facts
| Item | Example | Source |
|---|---|---|
| CO condition | Main permit and all associated permits passed final; fees paid | City of Sacramento |
| CO processing | Up to 7 business days (Sacramento) | City of Sacramento |
| Temporary CO | For a portion of the project: stocking, training, or opening a portion; fee applies | City of Sacramento |
| TI permit trigger | Required for a new tenant even moving in as-is (Anne Arundel, MD) | Anne Arundel County |
| Permit to CO | 16–28 weeks for typical dental TI | BuildCrux |
| Lease link | "Substantial completion" should mean legally occupiable under a CO | Husch Blackwell (Dec 2025) |
Why does a dental office need a certificate of occupancy?
Because the space is being built out or its use is changing. Anne Arundel County requires a tenant improvement permit for a new tenant to occupy space in an existing building even with no changes, and issues a CO once improvements are done and all final inspections pass (Anne Arundel County). Sacramento requires a CO for commercial tenant improvements where the use of the space has changed (City of Sacramento). Rules vary by city, so confirm at your pre-application meeting.
What has to happen before the CO is issued?
| Step | Typical requirement | Source |
|---|---|---|
| Trade finals | Electrical, plumbing and mechanical permits pass final | Anne Arundel County |
| Fire/life safety final | Must pass before the building final (Anne Arundel) | Anne Arundel County |
| Building final | After the above | Anne Arundel County |
| Other agencies | Health, planning or public works where they apply | City of Sacramento |
| Fees | All permit fees paid | City of Sacramento |
| CO request | Form submitted and processed | City of Sacramento |
To track each final and its result in one place, the free permit & inspection tracker (coming soon) is planned for this step. See how to track permits and inspections.
What commonly holds up a dental CO?
- Permitting that started late. Dental & Medical Counsel calls it the single most common cause of timeline overruns it sees (Dental & Medical Counsel).
- Fire and life-safety items such as alarms, exits and sprinklers; the fire final gates the building final in some counties (Anne Arundel County).
- Medical gas verification for piped nitrous or oxygen; see NFPA 99 for dental offices.
- State accessibility reviews. In Texas, projects of $50,000 or more must register with TDLR, get a plan review and be inspected (TDLR).
- Unpaid fees or open trade permits (City of Sacramento).
- Agency comments that change the drawings mid-construction.
For more, see why dental build-outs get delayed.
Can I open before the final CO?
Sometimes, with a temporary CO. Sacramento grants TCOs for stocking only, stocking and staff training, or opening a portion of a project, as long as the specified areas pass all needed final inspections; there's a fee and up to 7 business days of processing (City of Sacramento). A TCO for stocking and training can let equipment installers and staff start while the last items close out.
Plan the overlap. Dental & Medical Counsel notes that equipment installation typically starts about one month before opening (Dental & Medical Counsel).
How does the CO affect rent and the contractor?
In the lease, Husch Blackwell recommends defining "substantial completion" as legally occupiable under a CO, with only minor punch items left, and starting rent after substantial completion (Husch Blackwell). In the construction contract, AIA's G704 Certificate of Substantial Completion records the occupancy date and starts warranties unless stated otherwise (AIA Contract Documents). See the dental lease work letter checklist.
How long should I budget from permit to CO?
BuildCrux puts typical dental TI at 16–28 weeks from permit to CO, often with equipment install driving the critical path (BuildCrux). To model how a CO slip moves your opening date and costs, the free build-out cost & timeline calculator (coming soon) is planned to combine square footage, operatory count and region into a budget and schedule.
What should you do in the last 30 days before the CO?
The weeks before the final inspection decide whether the certificate arrives on time. Use this sequence with your contractor:
- Confirm the list of final inspections. Ask the contractor for every inspection that must pass before the building department will issue the CO, and who schedules each one.
- Check for outside approvals. Ask whether fire, health or other agencies must sign off separately, and when.
- Gather documents early. Collect test reports, certifications and any special inspection reports the department requires, so they are ready when the inspector asks.
- Plan for one failed inspection. Leave time in the schedule for a re-inspection instead of booking patients for the day after the final.
- Keep equipment installation on track. Coordinate with your dealer so equipment work does not interrupt inspections or create new code questions.
- Get the CO in writing. Keep a copy of the certificate with your lease and building records.
Tell your landlord and lender the expected CO date as soon as you know it.
How FloorStack helps
FloorStack is a dental build-out platform that keeps every permit, final and agency sign-off visible, so the CO request isn't waiting on something nobody tracked. Start at the Dental Office Construction hub, and see dental office permits and the inspection checklist.
Free tools on the FloorStack dental build-out platform for this step: Build-out cost & timeline calculator (free tool, coming soon) and Permit & inspection tracker (free tool, coming soon).
Free tools for this step
- Build-out cost & timeline calculator (free tool, coming soon): estimate budget and schedule from your square footage, operatory count and region.
- Permit & inspection tracker (free tool, coming soon): track every permit, inspection and sign-off through the certificate of occupancy.
Frequently asked questions
How long does it take to get a certificate of occupancy?
After all finals pass and fees are paid, processing can take days; Sacramento says up to 7 business days.
Do I need a CO for a dental office in an existing medical building?
Usually, if you're building out or changing use. Some counties require a TI permit even to move in as-is.
Can I see patients with a temporary CO?
Possibly, if the TCO covers opening that portion to the public. Some TCOs only allow stocking or training.
What inspection usually comes last?
The building final, after fire/life-safety and trade finals in many jurisdictions.
Who requests the CO?
Usually the contractor or permit holder submits the request once finals pass, but confirm in your contract.
Does rent start when I get the CO?
It should start after substantial completion, which tenant-side counsel recommends tying to a CO.
Sources
- City of Sacramento: Certificates of Occupancy
- Anne Arundel County, MD: Non-Residential Tenant Improvement Permit
- BuildCrux: Dental Office Buildout Cost Guide (2026)
- Husch Blackwell: Before You Sign, A Tenant's Guide to Key Work Letter Issues (Dec 2025)
- AIA Contract Documents: Instructions, G704–2017 Certificate of Substantial Completion
- Dental & Medical Counsel: A Dental Lawyer's Guide to Your Dental Office Build-Out
- Texas Department of Licensing and Regulation: Architectural Barriers FAQ
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