Do you need a certificate of occupancy to open or change a Mesa business? City Code 4-1-6

Subsection (A) sets the rule. No building, structure or portion of one may be used or occupied, and its occupancy classification may not change, until the Building Safety Director has issued a Certificate of Occupancy "or other form of authorization." A certificate is not an approval of a code violation.

Subsection (B) says how you get one. The Director or designee inspects and finds no violations of the chapter, the technical codes or other laws Building Safety enforces. The city can also condition it on:

• compliance with 4-1-4(S), the digital copy of the permit drawings for the Fire Department,
• payment of privilege and excise taxes under Title 5, Chapter 10, and
• payment of "any other accounts owed to the City of Mesa."

The certificate lists the permit number, address, owner, the portion covered, the code edition, occupancy, construction type, design occupant load, whether an automatic sprinkler system is required, and any special conditions. Group R-3, R-5 and U occupancies are excepted unless the permit holder asks for one.

Three sibling documents matter to a tenant:

• Partial certificate. Available on request for part of a building. There is "no premium fee" for a partial certificate for a tenant space in a shell building at the completion of the tenant completion permit.
• Temporary certificate (D). The Director may allow occupancy before all permitted work is done if that portion "can be occupied safely," sets the time limit and conditions, and each later use needs separate approval.
• Certificate of Completion (C). For work that cannot be occupied, such as a plumbing or gas system alone. It does not authorize occupying an incomplete shell.

• Occupancy classification. The building code category for how a space is used, such as business, mercantile or assembly. Changing it triggers the certificate rule.
• Technical codes. The adopted building, plumbing, mechanical and other codes. For plumbing, that is the 2024 IPC as amended by Mesa.
• Revocation. Under (E), the Director may suspend or revoke a certificate issued in error, on incorrect information, or where the building violates an ordinance.

Owners and tenants opening a new space, changing a use or finishing a shell in Mesa. Plumbers and general contractors are affected because they finish last and their inspections gate the certificate. It does not apply to routine repairs with no change of use, though a new Certificate of Completion can follow permitted plumbing work that is not occupied.

A dental suite. The tenant completion permit is final except the plumbing. The backflow assembly shown on the plans passed and the fixtures are set, so the partial certificate for the suite issues without a premium fee.

A hold for taxes. The inspection is clean, but the city notifies Building Safety that a privilege tax account is unpaid. The Director may withhold the certificate until it is paid.

The edge case. A landlord wants to let a tenant in before the parking lot is done. Mesa's text allows a temporary certificate for a portion that can be occupied safely. Whether this lot qualifies is the Director's call, and the section sets no minimum period.

1. 1Ask for the certificate type you need on the permit: full, partial, temporary or completion.
2. 2Get the final plumbing, gas and mechanical inspections signed off before scheduling the final building inspection.
3. 3Make sure the backflow assembly shown on the plans is installed and tested. See backflow on plans.
4. 4Clear any city accounts, including privilege tax, before the request.
5. 5Send the Fire Department its digital drawing copy (4-1-4(S)) before permit issuance so it does not hold the certificate.

• "The final inspection is the certificate." They are separate steps.
• "A partial certificate costs extra." For a tenant space in a shell building, the code says no premium fee.
• "Scottsdale and Chandler rules apply." Their deposit and site-completion rules are their own. Mesa's section has neither.
• "Once issued it lasts forever." It can be revoked if issued in error or if the space later violates the code.