Mississippi — Code Adoption Summary
Adoption model: Decentralized — no fixed statewide adoption cycle; adoption decisions are effectively made locally/by-discipline and vary widely between jurisdictions.
Last verified: 2026-07-03
Confidence: verified
Primary sources: ICC MS adoption map — https://www.iccsafe.org/advocacy/adoptions-map/mississippi/ · bcapcodes.org
Commonly-cited current editions (confirm per jurisdiction — no single mandatory cycle)
| Code family | Commonly-cited edition | Notes | Source |
|---|
| Electrical (NEC) | NEC 2023 + MS amendments | | iaei.org |
| Plumbing | IPC 2021 | MS = IPC | up.codes |
| Energy | IECC 2021 (commercial & residential) | | energycodes.gov |
| Building | Confirm locally — MS decentralized; 2024 I-Codes review possibly landing ~2026 | no fixed cycle | bcapcodes.org |
Adoption model & precedence
- Mississippi's code structure is notably decentralized — there is no single statewide mandate forcing all jurisdictions to a common edition/date; local jurisdictions decide when/whether to update, and MS tends to lag ICC releases by 2-3 years even where adopted.
- AHJ = local jurisdiction — always confirm directly; do not assume the "commonly-cited" editions above apply uniformly.
Major cities / counties
| Jurisdiction | Notes | Building dept. |
|---|
| Jackson | confirm local adoption | jacksonms.gov |
| Gulfport | confirm local adoption; coastal/wind provisions likely | gulfport-ms.gov |
| Southaven | confirm local adoption | southaven.org |
AHJ fallback (when local adoption is unverified)
- Best-available reference (not a guaranteed statewide floor): NEC 2023, IPC 2021, IECC 2021.
- Action: because MS has no fixed statewide cycle, always confirm directly with the specific local jurisdiction — treat the table above as a starting hypothesis, not a default.
Change log
- 2026-07-03 — created; verified decentralized/no-fixed-cycle adoption model; commonly-cited NEC 2023/IPC 2021/IECC 2021 flagged as reference only, not guaranteed statewide.
