Seminole County, FL Building Safety: Carbon Monoxide Detectors (2026)
Key Facts
- Governing section
- Sec. 107.3.5, item 6
- Applies to
- one- and two-family residential permits
- Reviewed by
- Seminole County building official
- Consequence
- rejection or permit revocation, Sec. 104.2.1
Summary
Before issuing a residential building permit, the Seminole County building official reviews plans for smoke and carbon monoxide alarm and detector locations under Section 107.3.5's minimum plan review criteria, alongside egress, structural and flood-hazard requirements for one- and two-family homes.
107.3.5 Minimum plan review criteria for buildings. The examination of the documents by the building official shall include the following minimum criteria and documents; a floor plan; site plan; foundation plan; floor/roof framing plan or truss layout; all fenestration and building envelope penetrations; flashing; and rough opening dimensions; and all exterior elevations: ... Residential (one- and two-family) Building. 1. Site requirements: 2. Set back/separation (assumed property lines) 3. Location of septic tanks 4. Fire-resistant construction (if required) 5. Fire 6. Smoke and/or carbon monoxide alarm/detector locations
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 23 Update 1 | Land Development Code: Supplement 2).
Full Breakdown
5 sets the minimum plan review criteria the Seminole County building official applies before approving any building permit application. For a floor plan, site plan and foundation plan to pass review at all, the examination must cover fenestration, envelope penetrations, flashing and rough opening dimensions plus, for one- and two-family residential building, a specific checklist: site requirements, setback and separation distances, septic tank location, fire-resistant construction where required, and item 6, smoke and/or carbon monoxide alarm and detector locations. The same residential checklist requires the plans to show flood hazard areas, flood zones, design flood elevations, lowest floor elevations and flood damage-resistant materials, and separately requires egress window size, location and stairs construction.
1 conditions the building official's written or stamped approval, marked Reviewed for Code Compliance, on the documents satisfying this section. 1 can revoke a permit already issued in error or based on incomplete information, forcing the applicant to resubmit plans identifying every required smoke and carbon monoxide detector location before construction can proceed.
Violations & Fines
Submitting residential building plans without the smoke and carbon monoxide alarm and detector locations Section 107.3.5 requires means the plans fail minimum review criteria: the building official can reject the application outright, and if a permit issued despite the omission, Section 104.2.1 lets the official suspend or revoke it as issued on incomplete information until corrected plans are filed.
Frequently Asked Questions
Does Seminole County require CO detector locations on my building plans?
What happens if my plans leave out detector locations?
Does this apply to my rental in Sanford or Oviedo?
Sources & Official References
Other rules in Seminole County
Florida rules heatmap·Compare Seminole County to another location·View the Florida building safety overview
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